Vorshlag 2011 Mustang 5.0 GT - track/autocross/street Project

[Crimson600+HP]

I wish I could make this event for the HPDE and Auto-X, but I am running the TX Mile that weekend. Bummer, so many good events going on in TX in March...can't choose them all.

[El_Tortuga]

Congrats.

Have you decided where you are mounting the blue bottle? Spray and pray!!!

[Crimson600+HP]

I love that GT. If I had more money, I would buy that car as a track toy...but then again...I am poor.

[Fair]

Project Update for May 15th, 2014: I am way behind on this build thread - 5 events behind and counting - and cannot seem to catch up. Instead of one MASSIVE post I'm going to break it up into smaller chunks. When I first started writing this, a week ago, we were loading up the car to head to Road Atlanta to race with Global Time Attack. That event was... memorable. Long story short: I overcooked the brakes, had a 150 mph shunt, the car and my back were a little banged up, but I will cover all of that in a forum post next week. In this installation we show the new set of MCS double adjustable shocks added and detail one track event where we tested these at (TrackGuys at TWS).

MCS RR2 Dampers Added

Due to supply problems from Moton we haven't been selling these in 2014. My goals with this 2011 Mustang include to "race what we sell" and to "actively test the parts we recommend", and until that brand comes back online (maybe by July 2014?) we needed to make a shock change. So we called up the guys at Motion Control Suspension in Georgia and had a set of remote reservoir double adjustable monotube shocks built for our S197, which we call the RR2.

After these arrived we had Stuart of Maxcyspeed & Co dyno test them. I wanted to see how close they were to the custom valved Moton Club Sport remote doubles that were coming off (shown above) and possibly have Stuart re-valve them. Stuart was the one that had valved our Moton doubles two years ago, and that set-up was working VERY well. That set of Moton dampers has sold, but we hung onto them long enough to make sure we were happy with the MCS set. He added some rear rebound before we installed them and I'm glad he did - the car feels mostly unchanged from before, which is exactly what I wanted.



These two brands look remarkably similar, and they should - the same principles that ran Moton-USA for a dozen years now run MCS, so the products from both companies share many characteristics. Both are monotube dampers with remote canisters, both are rebound and compression adjustable, and both have similar piston sizes, housing wall thicknesses and construction. But there are some notable improvements to the MCS models.


Left: The old set of Moton Club Sport 2-ways with remotes. Right: The new MCS RR2 2-ways with remotes

First, the rear shocks are NOT eye-to-eye shocks on the MCS set we ordered (although you can order them that way) like the Motons were, so they don't require a special rear shock mount adapter to fit the back of the S197 chassis. It might seem "cool" to have eye-to-eye shocks but on a street car with OEM upper sheet metal mounts it has downsides. Two reasons: First, the added height of the eye-to-pin shock mount adapter eats up shock stroke. Second, the rebound adjustment on the eye-to-eye shock is only accessed underneath the car via a special tool. For the past two years if I wanted to adjust rear rebound I had to jack up the car, remove a rear wheel, insert a small pin drive tool into a hole on the shock and rotate the adjuster. PITA.


Adjusting the rear shocks is now just opening the trunk and turning a knob. Remotes are compression, rebound on the shock tops

Now, with the MCS RR2 rear shocks I can just pop the trunk, pull the trunk liner out of the way, and rotate the adjuster knob that stays on the top of the shock. That adjustment just got a whole lot easier. I've never been a fan of removable knobs or special tools needed to adjust your shocks, and the Moton needed that at both ends. The problem is the special knob or pin tool is always hard to find when you need it most.


Moton rear shock shown with "divorced spring" in OEM position w/ ride height adjuster

The MCS RR2 rear shock and spring was left as a "divorced" set-up, just like the stock rear dampers and the old Moton set. This means the spring stays in the OEM location, not converted to be a "coil over spring" mounted over the shock. Why? Three reasons. The first is losing inboard rear wheel room with a shock mounted spring, and with 18x11 or 12" wheels we have to use every trick possible to stuff the wheels inside the stock rear fenders. Even with our new rear flares we use all that room near the rear shock to clear the big 345/35/18 Hoosier tires. We have shown time and again that you can never have too much tire on the back of an S197. As we have moved this car up from 255-345mm rear tires the lap times have dropped every single step of the way. The car gets easier to drive as rear traction increases.



An advantage to divorced springs is ease of rear spring replacement. We can a pair of rear swap springs track side in under 5 minutes. With a coilover spring mounting it is a lot more work, and the shocks have to come off and be partially disassembled. The final downside by moving the spring onto the rear shock is the suspension loads are now moved to the OEM sheet metal upper shock mount. Ford designed this car to have suspension (spring) loads going through a different load path (in the factory "divorced" rear spring location), and only damping loads were designed to pass through the upper shock mount. The only time we recommend gong to a coilover spring on these cars out back is when you have a roll cage tied into a reinforced shock mount. Even then there is very little upside to doing all of that work... it would have a tiny bit more spring rate in roll relative to the divorced location. That's it. But less inboard wheel/tire room. No thanks!



Up front the MCS front strut is very similar to the Moton unit that came off. The MCS units do have a slightly different lower bracket but we keep the slots pulled out to increase front wheel room. Every time we've seen someone use "crash bolts" or slotted strut brackets on a McStrut to increase front camber they lose front wheel room, which again - is a huge draw back. We use every trick in the book to squeeze an 18x11" wheel under a stock front fender, and even with our custom front flares on this car it is tight fit with our 18x12" wheel and big 335/30/18 front tire. A shorter-than-stock Whiteline adjustable endlink and Hyperco 800#/in spring (same as we used before) wraps up the front end. As you can see getting to the front shock adjusters is as easy as out back - open the hood and turn a knob. No need for removable tools or knobs that can be lost. We already had brackets to mount the remote shock reservoirs and just re-used them for the MCS units.

I was happy with the install and the guys here at Vorshlag had it knocked out in only a few hours. They re-cross-weighed and balanced the car and got the two crosses to 50/50 with me in the driver's seat + the TT3 ballast in the trunk, with a 1/2 tank of fuel (as low as we dare run it in road course use with the stock tank/slosh issues). The only other substantial change was moving from a 350 #/in rear spring down to a softer 250#/in spring, to try to increase rear bite. We wanted to test these new springs at an event that didn't affect our preferred competition series record for the year (NASA TT3), so we signed up for this...

TrackGuys HPDE at TWS, March 29, 2014



see below

[Fair]

Amy and I motored down to TWS for the weekend of March 29-30th to do a little testing before the NASA event a few weeks later. This HPDE club was running the 2.9 mile course in the counter clockwise (CCW) direction and the next NASA event there in a month would be running CW, but no matter. We just needed a higher speed track event to test the new MCS dampers and softer rear spring rates at, so this event worked well for that. We signed up with Amy as the only driver, since she hasn't taken as many laps at TWS and needed more seat time at these speeds.



Amy drove the Mustang for two days, 7 sessions on track totaling and about 3.5 hours of seat time this weekend, burning up a lot of fuel and completely used up a set of Continental DP tires in the process. She got a lot more familiar with the TWS 2.9 mile course and the higher speeds seen here after that many hours on track. The brakes did great with this much abuse, but she used up a good bit of the brake pads. American Iron Camaro racer Mike Patterson rode with her and even drove our Mustang with her in the right seat for a few laps, giving her some excellent instruction. Amy picked up a lot from Mike and she ran some 1:59 laps afterwards, dropping 3 seconds almost immediately - this is a sport that is very difficult to "self-teach".



The TrackGuys crew had a record number of entrants for this TWS event and ended up being just barely short on instructors, so I filled in for an instructor that had trailer trouble on Saturday and arrived several hours late. I rode shotgun with two Mustang students for a couple of sessions each - one was in a '04 Cobra street car making 550 whp, yikes! Lucky for me they both did great. Since I instructed this allowed me to take a few laps in an instructor only session using our car, and I took exactly 3 laps both days. The Conti slicks felt OK but I was definitely slower than my previous laps on 315mm Hoosier A6 tires, with a best of a 1:56.2 lap with a student riding along.


Left: Mike Patterson's AI Camaro was quick. Right: Amy in grid for the red group

We ran this event on the same set of 320/650/18 Continental DP slicks we ran briefly at ECR on Dec 28th, back when it was so cold we couldn't get any heat in the tires. These tires were now used with the above mentioned new set of MCS RR2 shocks and 250 #/in rear springs, but the rest was the same from previous events this year. We ran the hot pressures in the mid 30 psi range and they felt much better in these warmer ambient temps, and didn't have the funky feel from December.


Matt White (at left) was quick in his ST1 classed 5.0 Coyote powered Mustang and Misty White (at right) was moving in her ST2 Camaro

According to our previous lap time data these tires were about 5.5 seconds slower than the 315 Hoosier A6 (previous best at TWS 2.9 CCW last September was 1:50.675, which was a new TT3 track record then). That seems like a lot, and maybe it is, but the A6 is a one or two lap "sprint only" type of tire and this Conti DP slick is made to go for many hours - which it did.



Looking at the pictures of the tire wear we definitely got our money's worth on this set, ha! The fronts might have had a tick too much negative camber, as the insides are worn more than the outsides. We actually took these a into the cords and could have easily suffered a blowout - not a pretty sight at 150+ mph. We saw a Corvette do that (pop a front tire at high speeds) during this TWS weekend, and it destroyed the front bodywork and some other bits.

Photo Gallery: http://vorshlag.smugmug.com/Racing-E...-TWS-March-29/

Amy and I took pictures so they aren't as good as what Brandon would have shot, obviously. We took video during each session but its pretty boring stuff so I'm not going to bother editing and posting up a lap.


There were Mustangs from all eras and types: race cars, street cars, and everything in between

This TrackGuys group put on a good event, but a handful of the drivers were a bit reluctant to give point-bys in the faster run groups. Amy got stuck behind a couple of Corvettes for too many laps in a couple of run sessions - she was held up in some corners, but they had enough power on the straights to prevent a clean pass. Oh well, it happens. She doesn't push cars in front of her hard enough to really "get the point across", but she's always safe and calm on track.


This C6 Corvette had an off in the wildflowers and we cleaned his grill, heh

Amy had fun and I got a few laps in: enough to know that the Continental DP slicks aren't going to be replacing our A6s any time soon, and also to know that the new MCS RR2 dampers feel as good or better than the customized Moton doubles we had on the car before. The new softer rear spring also seemed to put down power a bit better on corner exit as well.



The rear definitely has some more roll, as shown in the picture above, so we might look at bumping up the Whiteline rear anti-roll bar settings. But we've driven the car several times since this and it actually feels great. Having the ability to quickly and easily adjust the rear rebound settings of the MCS shocks is a welcome change, and it allows for more shock adjustments to be made.

What's Next?



I'm already working on write-ups for these events, which have come and gone:

• SCCA at TMS, April 13th, 2014
• Vorshlag Kart Fight 3, April 17th, 2014
• NASA at TWS April 26-27th, 2014
• Sam Pack 24th Dallas Spring Nationals Car Show, May 3rd, 2014
• GTA @ Road Atlanta, May 9th, 2014

The crash at Road Atlanta was pretty bad - but it is all fixable

More soon,

[Fair]

Project Update for May 21st, 2014: So where were we? Ah, yes... April events and development work on the 2011 Mustang. First we ran an SCCA autocross in April on street tires - and all of our runs were during a downpour, so that was fun. There was an informal kart shoot-out we hosted the next week, then we created a new mount for a massive new (AJ Hartman) rear wing. Let's play catch up!

Texas Region SCCA Solo at TMS Bus Lot, April 13th, 2014

So there was a Texas Region SCCA event in April that we wanted to use for dry weather BFG Rival autocross testing with the new MCS coilovers. Amy and I co-drove in the 2011 Mustang on this rainy Sunday in April. We both ran in the first heat, in a steady rain that left little grip on for the BFG Rival 200 treadwear street tires. We both raced in the local "MAM" class (Modern American Muscle - a supplemental class to the new "CAM" Classic American Muscle class).



The club had 122 registered entrants, which was pretty dang good for a day everyone knew would have rain. We got there and it was still dry, unloaded the car and applied the hastily made "MAM" class letters that I hand cut the night before. I had Olof mount the same set of 315/335mm BFG Rivals that we used at the USCA/Optima event weeks before. The tires still looked good but the rears were flipped and run inside mount, since I kind of mauled the outer tread blocks on the right rear in my 90+ laps on track at the USCA event.

• Results: http://texasscca.org/2014_solo_resul..._final.htm#MAM
• PAX: http://texasscca.org/2014_solo_results/tr14_2_pax.htm
• Photo and video gallery: http://vorshlag.smugmug.com/Racing-E...CA-TMS-041314/

We had 5 runs each and Amy took 4 of hers first, then I took a couple of runs, then she took her last, and then I took my final 3. The rain was pretty hard at the beginning of the 1st of 4 heats and we still had to run the wipers on our last runs in the heat. It rained even into heat 2, stopped raining finally sometime in heat 3 and by heat 4 it dried up completely and times dropped by 10 or more seconds.



I worked in the trailer in heat 2, announcing, and took lunch with 2nd place MAM finisher Jay Payson from HP Tuners. He was in town for business and rented a Penske Mustang GT, which he enjoyed running in MAM. Since we left the rain gear box at the shop I still goat soaking wet, while taking pictures of Amy while she drove in heat 1.


Just a sample of the results showing how slow MAM was running in the wet compared to CAM that ran in the dry

I ended up getting fast time in the 4 car MAM class with the rental Penske 5.0 Mustang in 2nd place and Amy in 3rd. The Penske car had fresh Goodyear 220 treadwear tires and Jay said it was remarkably easy to drive. He normally races an M5 in FStreet class but he said liked the Mustang a lot and we discussed the merits of an E92 M3 and an S550 2015 Mustang for F Street at lunch.



Normally I -love- racing in the rain but as usual, the conditions varried too much to compare with other classes/run groups. And at this particular event we were definitely at a disadvantage here, with too much power and tires with too much width. See, in the rain it actually helps to have more pressure on the tires, just like in the snow, so you want a narrower tire with deep tread voids - which we definitely did not have on the well worn 315/335 Rivals. The new, deep tread, 255mm tires on the rental car were what you wanted in this instance, as strange as that sounds.



And Jay almost whipped me in a car he had never driven, so I felt lucky to come out ahead. Everyone else in the class ran their fastest run on their 5th and final attempt, except me. I was 3 tenths quicker on run 5 but stepped on a cone, so I had to settle with my 4th run. I had to drive on my best behavior in these conditions, which was driving me nuts, but I managed to "throttle" my normal tendency to over-drive and just did the rain dance. Tip-toeing on the gas and smoothing out my inputs as much as possible. We also ran a tick more tire pressure than normal, and dumped the compression damping on all 4 shocks to zero.


This was the slow in-car video from my 5th run. Its not very impressive, trust me.

The rain lessened all day and by the 4th heat we heard it was completely dry and times dropped dramatically, so the PAX results aren't very representative for everyone. Heck, the only group I'd want to compare any times with was the first heat, of which I think there was one car quicker than us in the 59.8 second range (STS winner JJ). It got progressively drier in heat 2 and 3 but by heat 4 it turned into a beautiful day and was fully a dry weather autocross. That would have been fun to make a few blasts around the course, but you run in the heat you are assigned. Oh well.

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[Fair]

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Left: We got to slog it out in deep puddles while... Right: The 4th run group had completely dry runs by day's end

Overall this event was a bust for testing with the Rivals. Why? Well we're only testing these with tires to use at the Optima Ultimate Street Car shootout in November, which is held in Vegas. The chances of rain for the ENTIRE day of that event in Las Vegas are virtually ZERO, so wet weather testing does us no good for that series. I will say the Rivals have surprisingly good grip for as wide and as bald as they were on this day.

Oh well, we got to see a lot of old friends and drive around really slowly. At least we didn't have any tire wear, ha!

Vorshlag Kart Fight 3

We are lucky to have a world class outdoor karting facility on the East side of Dallas called Dallas Karting Complex (DKC). Virtually all of the track, autocross, time trial and karting racers in DFW know about this place and have driven their rental karts before. We had a couple of Vorshlag sponsored Kart Challenges in 2011 and I was on a team of 4 in the first DKC 4 hour enduro in December of that same year. We got really busy in 2012 and 2013 and didn't have another Vorshlag-sanctioned karting competition for those two years, but I drove rental karts there many many times.



Instead of the structured, all day Saturday, 3-round shootouts we held in 2011, this time Vorshlag just held an informal night competition event at DKC on April 17th, 2014. This was a Thursday night and we posted up a Facebook event on our main Vorshlag page a few days beforehand just telling people, "hey, come join us from 6-9 pm, run a few races, turn in your time sheets, and the fastest time of the night gets a trophy".



We called it the Vorshlag Kart Fight 3, as this was out 3rd karting competition event since 2011. For something kind of thrown together at the last minute we had a surprising number of racers show up. By the end of the night we had nearly 40 people who came out to fight for the VKF trophy.



Kyle and Olof built this awesome trophy out of some broken Subaru drivetrain parts, TIG welded together and bolted to a base. The competition format was simple: show up, pay $15 a race (each race is about 10-12 minutes in length), and your best times run that night from 6-9 pm in the regular We had some swag and gift certificates for 1st through 3rd places. We also used NASA TT rules for offs and spins: if you put 4 wheels off or spun 180 degrees or more on track ALL times from that session were voided for that driver. We all spotted for each other.



Left: I went over the driving line, as I run it, with anyone who'd listen. Right: Fastest time of the night went to Alpha LS1 Miata tester Jason Toth!

I kept getting the same slug of a kart all night (excuses - I has em!) and while I had an early lead, I never improved on my first session times and could only manage 2nd quickest time of the night, a couple of tenths back from 1st. NASA TT racer Jason Toth was the winner, and (taking myself out of the running) 2nd place went to Billy Jack Smith and 3rd place swag went to NASA TT racer Jefri Tan (who runs in TT3 with me in a red EVO). We had one guy flip his kart (no injuries) and another NASA racer who put his kart so far off track he ended up in the sippy hole, and went home sopping wet. But no injuries and everyone had smiles on their faces.


"Helmet-Cam" Video from Marc Sherrin

NASA TT1 racer Marc Sherrin took the video above with a Go Pro strapped to his helmet, which is a compilation from about 3 sessions. As you can see we started off in daylight but it quickly got dark, and the track cooled off. They have excellent night lighting, so that made for extra fun NIGHT RACING! He even caught a glimpse of the kart that flipped in his video. We had 6 NASA TT racers, a lot of SCCA autocrossers, and various other local gear heads in attendance.

Vorshlag Kart Fight Photo Gallery: http://vorshlag.smugmug.com/Racing-E...-Kart-Fight-3/

Five people from Vorshlag were there and Brandon managed to snap some pics while we were there. Thanks to everyone that came out to join us - we'll do it again soon!

New Massive Rear Wing on Mustang!

Let me first start off saying: I am not an aerodynamics guru. I have a mechanical engineering background/degree, and I understand some basic concepts of aero, but Jason here at Vorshlag studied hydrodynamics in college and I rely on his expertise. I also know other people are aero gurus that I listen to, and read from. So I will try to cover rear wings in this section without butchering the science of it too badly.



We have had an APR GTC-300 "3D" wing on our 2011 Mustang for the past 2, almost 3 years? This was supposed to be a temporary fix until we found a better 2D wing, from APR or another source. At the time APR was only making 3D wings, but have since come out with their own carbon 2D design. I initially bought this 67" wide GTC-300 carbon fiber wing element to use on another car, and we actually did use it on Brianne's Pikes Peak Subaru in 2012 for the PPIHC event that year. It is a good low speed wing (PPIHC is fairly low speed, as are many of our Texas tracks like ECR, MSR-C, MSR-H, HHR, TMS and others) but is somewhat "draggy" at higher speeds, and never was meant to work at the heights we ran it with on our car.



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[Jucostud]

Good job at hallet this weekend! Was your back a problem? Or are you feeling better now?

[Fair]

Project Update for 28, 2014: In this project build thread update we will be showing more details of the repairs and upgrades to the TT3 Mustang after the shunt I had at RoadAtlanta in May. Next we cover another track day two weeks later at ECR, where Amy drove and tested out the repairs and brake system improvements. I talk a little about wheel bearings and have a video of what a bad S197 front wheel bearing sounds like. We also had a car show to attend in June with our Mustang to support a Vorshlag team member's custom Cafe Racer charity bike build. Finally I'll "weigh in" with more of my thoughts on the S550 Mustang's latest weight revelations. We'll save the NASA event at Hallett for the next installment.



Injury Report and Car Repairs after Road Atlanta Crash

When we got back from RA the car was a bit of a mess, but my back was in a little worse shape. I made a couple of doctor visits, where they X-rays and some pokes and prods, but not much else. I was determined to avoid any surgery and especially spinal fusion surgery. Both doctors said "avoid any load on your back, don't go to the gym, lets look at you again in about 6 to 8 weeks", so I've been sticking to that plan. I dealt with the pain by taking Aleve daily, used an ice pack at night to reduce swelling, wear a lower back almost brace every waking hour, and had to take Hydrocodone about a dozen times when the pain got really bad (all from my doc's advice). Never missed a day of work but there were probably a few times I should have gone home early. Pain makes me more of an a-hole than normal, but Sofi would just yell into my office "you need take a pill!" when I got too far out of hand.



Sleeping has been very difficult, as all I had to do was roll on my side and the broken rib would spear me awake. I mostly slept sitting upright for the first 3 weeks and was getting about 2-3 hours a night. The rib finally felt like it was mended at about week 5 but the fractured vertebrae and nearby disc are taking a bit longer to heal. I don't have to exert myself or lift much weight to aggravate my back, so I keep the brace on most of the day. After 5 weeks away I finally made it back to the gym for some self-imposed physical therapy by week 6 and was off the pain pills and Aleve by then. It is week 7 now, I'm doing better, and have already completed two race weekends without any incident since the crash. It actually feels fine in a proper race seat and 6-point belts. With the next two months devoid of track events I can concentrate working at the gym to strengthen my back again.



The damage to the car actually wasn't nearly as bad - after a lot of checks and measurements it is still perfectly straight and unbent, just taking some superficial, cosmetic damage. This level of vertical impact could have turned many chassis into a banana, but the S197 unibody is a tank. After 4 years of just calling it "The Red Car" around the shop, I think a nick-name of The Tank is more appropriate now.



The gravel trap took the splitter off, and when that left the car it damaged some other bits that were bolted to or nearby it. The bottom edge of the front bumper cover was ripped off, which is a section hidden by the CS lower fascia but still integral to its attachment. The left side's black factory "side skirt" was also mangled and half torn off, plus the lower portions of the front flares were damaged.



The splitter we built is stout, and when it pushed back and came off it poked a hole in the A/C condenser, so that was removed and the lines capped for now. A replacement isn't costly (less than $120) but we have only used the A/C system once this year, during the Optima Street Car road rally, and it is limiting airflow to the Mishimoto radiator. One step of the repairs were to make some templates for patches of red race roll (plastic) to fix the flares. These fender flares are going to be completely replaced at some point (likely with a composite front fender that a buddy's shop is working on) but for now we just patched the broken lower edges - you can't even see the repairs at speed, not with the unpainted black bumper cover on the front to distract you.



A new front bumper cover and side skirt were acquired from Ford, then the bumper cover was modified on the upper edge to fit around the aluminum airbox we have built to route air from the lower grill opening to the (now) front of the radiator. This detail is hidden behind the upper grill block-off plate. We had a spare CS lower fascia (that a customer discarded due to a minor scratch) so that was attached to the new bumper cover and splitter before it was all re-installed. Some minor repairs to the radiator's aluminum duct work were needed as well.



The same splitter that came off in the crash was virtually unscathed, save a couple of rear mounting holes that tore out along with the mounting bolts. We made some new holes to move the rear mounting plate 1/2 inch forward, sprayed some paint on the scratched lower face, and it all went back on. Nobody said 3/16" 6061-T6 aluminum plate was light, but it is damned sure strong. I've seen plastic and composite splitters that came off in similar crashes, usually doing as much or more associated body damage, but the splitter is almost always completely destroyed in the process. Not this beast - it also cuts grass like a mofo!



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[Fair]

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Of course I am determined to not have this type of brake system failure again, and we've taken measures to that end, as shown in my last post. The 3" brake ducts, while more than adequate for so many S197 track drivers and racers, were not keeping the 14" front Brembos cool enough on our exceptionally heavy TT3 car (3802 pounds with driver). The Alcon temp strips indicating 490°F temps at the caliper should have been a BIG red flag, which I ignored (and we saw the results of that). That's near the boiling point of most hydraulic fluid and was just not a safe condition to leave the brakes at. So we have upgraded to larger 4" front bumper front duct opening using aluminum tubing and opening up the CS lower fascia from the 3" foglight hole with some careful cutting. You can see the new rear splitter mounting stanchion in the picture above right, and also where the old mounting holes in the splitter were torn out in the crash. That's all of the damage the splitter took.



The new front brake cooling duct openings were routed with 4" hoses but necked down onto the old brake backing plates' 3" ducts. We ran out of time to make new brake backing plates before the ECR track event. I was also curious to see if the larger hoses and front openings would help the brake cooling when even with that smaller restriction at the rotor. Our guys here at Vorshlag got everything repaired, new brake pads/rotors/fluid, nut-and-bolt checked, re-aligned, weighed and corner balanced, and the front brake ducts/hoses upgraded in about 2 days time, then loaded the car into our trailer to verify the repairs at a local HPDE event at Eagles Canyon on May 24th - less than 2 weeks after the crash.

Front Wheel Hubs - Diagnosis and Repair

One of the common wear items on an S197 Mustang, and all cars for that matter, is the front hubs. We recently had to replace the fronts, so I made this little video to show what bad bearings sound like, and what it takes to replace them.



The video above shows what you should do for quick diagnosis, and should be on your pre-track check list. Every. Time. We check the hubs whenever we do any track inspections here, and we've found bad front hubs on Mustangs a number of times. This is actually the 4th set that we've replaced on our 2011 GT since we picked it up in August of 2010. As the grip levels and brake heat go up the lifespan of the hubs goes down. 4 sets of hubs in 4 years ain't bad, considering the lap times this heavy beast puts down and the brake heat numbers we've seen.



We actually replaced these hubs after the ECR event (detailed below) but before we went to Hallett. They were fine before ECR but they weren't afterwards. Vorshlag stocks and sells this FMS-M-1104-A motorsports hub kit, which comes with the 3" ARP hardened wheel studs installed plus new spindle nuts (which are one-time-use nuts that need 250 ft-lbs of torque to seat). This kit is cheaper than buying new hubs and wheel studs separately, and they are already pressed in place.



We also have a variety of wheel spacers for the S197 and our reduced (17mm) hex/enlarged taper lug nuts for this chassis. These are the same 1/2"-20 right hand lug nuts a Ford uses, but with a smaller hex drive to fit inside aftermarket "lug wells" with a deep socket with more clearance to the wheel. The larger OEM (19mm) hex lug nuts often won't work with some wheels with a tighter lug well (like Forgestars). These lug nuts and wheel spacers are what we use on our car, and they are located in a new section of our shopping cart we have created here.

Five Star Ford at ECR, May 24th, 2014



We had planned on attending this event many weeks earlier and I was bound and determined to make it back out there in our car, even if I wasn't going to be doing any driving. A big chunk of the Vorshlag crew came out to this Five Star Ford sponsored event at ECR on what turned out to be a beautiful Saturday in May.



We brought our 2011 GT test mule to test the new brake upgrades and to verify the repairs after RA. Amy was driving all day and gave lots of people ride-alongs. Our crew worked on nearly 20 cars during the day, doing a lot of brake fluid flushes (replacing crap fluid), Carbotech brake pad swaps and other various trackside repairs.



Since Amy drew the short straw and didn't get to drive at Road Atlanta at all, this was to be her day of testing and track fun. We mounted up a set of 315mm A6 scrubs and had her on track for over 6 sessions that day - taking runs in all of the Red group sessions as well as some in Blue group.



She took over a dozen riders that Saturday, which Jason and I kept funneling into the right seat of the Mustang - as well as funneling fuel into the Mustang's gas tank.

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I was also taking some pictures, talking to customers, and trying to help the guys work on a few cars (more on that in a second). Brad Maxcy, our shop manager and a racer himself, shot most of the pretty pictures in this write-up while working a long day fixing cars and brakes. You can see the images and video from this event in the gallery below.

Vorshlag's ECR picture and video gallery: http://vorshlag.smugmug.com/Racing-E...rd-ECR-052414/

I was itching to drive but Amy was hearing none of it, and in truth my back wasn't up for the somewhat bumpy ECR circuit. That didn't mean I took it easy, oh no... I was seriously stupid and helped work on a handful of the 20 cars that needed brake flushes, brake pad replacements or other work that day. Fully one third of the cars at this event needed help from our crew, and I'm glad we were there with some parts and the technicians to help install it all.



Brad, Kyle and even our sales manager Jon were busy all day wrenching on cars, from the moment we got there until we left at around 5:30 pm. We knew we'd work on a few cars but this was a bit more than expected. Luckily we brought two cases of Motul brake fluid, lots of Redline synthetics, and 4 sets of Mustang brake pads - and we sold and installed every single one. I had warned the entrants at the driver's meeting that ECR would eat stock brakes, and we always try to put the word out beforehand to warn people to upgrade at least their fluid, but it still happens. Stock brake fluid SUCKS and has no business on a race track.



It ended up being a long day for our guys, and my back was killing me from even just working the jack or some other trivial tasks. I didn't drive or ride in any cars that day, which hurt me even worse, though. I was going nuts just watching all of these folks have fun. I am a terrible spectator and a worse patient, heh.



Amy drove in fairly heavy traffic all day, and managed only one or two clear laps. She had riders on every session so she was only pushing the car 8- to 9/10ths but still managed a 1:59.0 on a lap shown in the video above. There's also some shots in there of Mike D spinning in his twin turbo 67 Camaro and some footage of my old ChumpCar teammates in the 1998 Firebird I helped them with for a bit before bowing out and letting them take over.



This gutless 3.8L V6 powered 4th gen Firebird Chump racer looked pretty good out there and I was glad to see them finally get it back on track, as it hasn't run in about a year. The cage was welded in and completed by our friend Kurt at Janco Fab, using a cage kit I had purchased from Blainefab. Paul and Jason (shown above) took over the remainder of this build and finished up a lot of safety upgrades and other little odds and ends. It held together almost the entire day before the old transmission mount broke - and yet they kept driving it, heh.



I won't give away their lap times but they passed a lot of cars and a few 5.0L Mustangs in this 200 hp behemoth. Above right you can also see Shannon's 5.0 S197 on track; she had just started working at Vorshlag as our summer Engineering Intern. Her new True Street built motor was roaring down the front straight and she ran strong all day.



Mark C was quick, when he managed to stay on track and get a clear lap, heh. He had a quick off-and-on in Turn 11 and I barely caught the pic! Heather (Shannon's sister) was darned fast in the V6 5th gen Camaro, but she keeps burning the brakes off of this poor car. It needs a boatload more negative camber up front, as well.



By the end of the day we were all exhausted but we had a lot of fun. Corey White and Jerry Cecco put on a heck of a good event and with 60+ drivers there were lots of smiles to go around that day. Thanks to Five Star Ford for sponsoring the lunch, too! A bunch of us went into town and ate dinner at Fuzzy's Taco Shop before heading home, which was delicious. The food was great and Jason somehow managed to keep the queso from that giant burrito out of his beard.



We had some good test data and learned that the larger brake cooling ducts in the bumper cover and the 4" hoses made a significant difference, with max temps at the caliper seeing only 430°F all day, and Amy was brutal on the brakes.

She actually finished off the rear pads we had on from Road Atlanta after her 2nd session and our guys put on a fresh set of Carbotechs to let her finish the day (and they are still on the car 2 events later). We also learned that we can NEVER bring too many sets of brake pads to an event like this held at ECR... it we would have had 4 more sets we could have installed them all for folks. This track eats brakes, and the car's wheels above were gold before the day started.



Lots of fun and I'll post up the next time FSF holds an event at ECR. Great place to do your first event, and you'll see a lot of pony cars and other vehicles at this low key fun track event.

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GT Moto Bike Build Reveal at GMBG, June 15, 2014



Vorshlag's own Sofi had an event we attended at Gas Monkey Bar & Grill. This place hosted her "bike reveal" where the Cafe Racer style motorcycle she and her dad hand built on June 15th, 2014. Many of the Vorshlag staff and friends came out to support this charity event, bought shirts and raffle tickets, and had a great time.



"Texas Dave" was in town with his Pikes Peak EVO and he brought it out and showed it in the GMBG parking lot. We brought the Vorshlag TT3 Mustang and had it parked in the the small show area during the party as well. KC from the Fast-n-Loud show had his truck in the same area later that day, as he knows Sofi and came to the party.



Sofi is our operations manager here at Vorshlag and schedules customer service work and supplies our shop guys with parts. She is also a decent fabricator and bike mechanic and races her various motorcycles as well, including her throw-back Cafe Racer style Honda (the blue one, shown above left). A lot of her friends and fans came out to support this event, and she's raised over $25K for charity with this bike build so far. We're all proud of her and respect the cause she's raising money for.



She and one of our fabricators Olof built the exhaust for this new bike at Vorshlag a couple of weeks earlier and used the same ICE Engine Works kit we use to make custom headers for our V8 swaps.



The bike reveal went really well and there were close to 100 people there to see the bike for the very first time. I hadn't seen it with the painted tank and trim work installed and it really came out looking amazing. This bike is being given away via a raffle, with a drawing on July 5th, and all proceeds go to St. Jude's hospital for cancer research. You can see more info about the raffle here: https://rafflecreator.com/pages/1379/gt-cafe-for-cause We all bought several tickets, and if I win it I'll do wheelies in our parking lot, then probably fall off and break my back.



GMBG itself was actually really nice, even on this super hot day (it was well into the high 90s). There was a 90 minute wait to get a table inside but luckily for us, all of the folks who came for the Moto GT bike reveal had a private 2nd story air conditioned bar with front row seats to the bands that played on stage that day. The deck out over the pond surrounding the restaurant was also pretty nice. We ate and drank and had a great time. We've met most of the guys at GMG and they are all friendly, professional and passionate about hot rodding - and they provided the facilities for this party and raffle free of charge. He might be a little abrasive on the TV show but Richard Rawlings knows how to party and his bar and grill is a hopping place. I'm glad we could come out and bring a lot of friends to help support Sofi's charity. Again, if you want to purchase a raffle ticket the drawing is this weekend on July 5th, so good luck!

The New 2015 Mustang - What Does The S550 Chassis Weigh?

The last few weeks have been full of rumors and speculation about the new 2015 Mustang and what it will weigh. Steeda got a huge black eye when they "guessed" it the S550 would actually be gaining a few hundred pounds over the last generation, contrary to Ford's pronouncement of a weight loss. Motor Trend also had some guesstimations that were apparently pretty unflattering, and also not based on fact. Turns out Steeda never actually weighed a car, and the whole thing became an internet scandal labeled "2015 Mustang Weightgate".


image above found on Jalopnik

The automotive car websites were going nuts, and even I got a call from a reporter at Jalopnik looking for real data - of which I had none. Turns out they finally got to the root of all of the mystery, the car gained less than 100 pounds, which was shown after Ford leaked some semi-official weights, shown below.


image above found on Jalopnik

So it was much ado about nothing... of course the S550 didn't lose weight. That wasn't really a possibility, and few if any new car models are getting lighter than any older generations - due to rising crash standards, technology complexity, and customer demands for more creature comforts. The Mustang would have to make a radical change in the chassis goals to lose pounds (remember the Ford Probe disaster??). No, the S550 is staying somewhat the same in size and power but getting new features and upgrades - like the Independent Rear Suspension and bigger 15" front brakes - so it gained a few pounds in the process. The 3704 pound number being thrown around is still 130 pounds lighter than a stripped 2014 Camaro Z/28, a $75K track toy that comes with race tires but no air con.



What strikes me as the most odd is the wild variety of car models that some folks are comparing the Mustang to, or trying to. Look at how much bigger the S197 is compared to a Genesis Coupe (which is fat and heavy too), a BRZ and an MX5, above. Am I supposed to believe that car people cross-shop Miatas with Mustangs? If they do, then they are VERY confused about what they want from an automobile. Even the turbo 4 and V6 Mustang will be so far removed from a flyweight 2 seat roadster like the MX5 as to be not in the same league. The S550 is really more of a new and improved S197, which itself was a RADICAL improvement over the Fox/SN95 chassis it replaced. The Fox/SN95 was based on a 1977 Ford Fairmont, and that's saying a lot.



Of course Vorshlag will weigh several S550s when the first ones arrive at local dealerships, and our car will be here hopefully before the end of August. We have aggressive plans for track testing then upgrading the suspension, wheels, tires and more. Stay tuned for that new build thread, which I will link in this S197 thread.

What's Next?

• NASA at Hallett, June 21-22 - This event went really well, and we beat our 2013 lap record by 3 seconds, but I borked the splitter in an "off" during the first Saturday session!
• Repairs and Improvements after Hallett - I'll cover the upgrades and repairs we made after this last NASA event. My hack driving knows no limits... not even the TRACK limits.
• Lone Star Drift at TMS, June 29, 2014- Drifter vs Road Racer Battle, aka: Drifters go Derp!

As the summer gets hotter here in Texas the track schedule falls way off, to keep drivers from overheating, so we don't have any NASA events scheduled again until September (unless we go to NASA Nationals East, August 31st at Road Atlanta). The "summer track break" around here means we have some openings on our service schedule. If you need some race prep, fabrication, seating, cooling, brake system or safety upgrades you've been putting off, let us know. Several of our long term development projects for V8 swaps are getting more attention as shop time is freed up, so we'll stay busy either way.

That's all I have time for in this sitting, but I'll cover the Hallett event and the TMS road course "drift vs grip" event in my next write-up.

Thanks,