Stock Internals and MT82 limits, FI preference

[5PointSlow]

Originally Posted by txcharlie My car runs a TVS2300 and puts out 673/617 at the wheels. I agree with most of the comments, but will add one thought.....Don't skimp on the fuel upgrades. A lack of fuel can cause your boosted engine to give up the ghost. I started with 71lb. injectors and a BAP. I just ordered the JPC return fuel system to make sure I have plenty of fuel for any boost level. You will need fuel upgrades if you use E85 as the volume of fuel used is higher than petro. I've been running the TVS for almost a year with no issues. MT-82, stock clutch, DS and street tires. The moment you bolt on drag radials or slicks, the game changes and your likelihood of breaking stuff goes way up. There is no such thing as a budget build whether using a turbo, roots, or centrifugal. One upgrade always requires another and another and so on. Just be prepared to spend way more than you planned. I choose the TVS for it's simplicity, reliability and they seem to make more torque than the KB or centrifugal. Good luck in your build!!

What size pulley? I've been considering pulleying mine done to a 79 or 75 from the 82. I have the injectors and bap for it. I know that the 75 ill run out of fuel on E85 but should be good on 93. Not sure though if I want to do that or just go built as swap to a 2.9 whipple.

[txcharlie]

Originally Posted by 5PointSlow What size pulley? I've been considering pulleying mine done to a 79 or 75 from the 82. I have the injectors and bap for it. I know that the 75 ill run out of fuel on E85 but should be good on 93. Not sure though if I want to do that or just go built as swap to a 2.9 whipple.

It's a 75mm. I run the 90mm to be safe until I build the block. After it's built, I plan on going to a 69mm, OD crank pulley and 72mm TB. Should be good for 750+ at the wheels. If that's not enough, then I'll go with a bigger blower.
Honestly for a street car, can anyone use more the 550-600 at the wheels? But it sure is fun having the extra HP

[Dan12GT]

Originally Posted by txcharlie It's a 75mm. I run the 90mm to be safe until I build the block. After it's built, I plan on going to a 69mm, OD crank pulley and 72mm TB. Should be good for 750+ at the wheels. If that's not enough, then I'll go with a bigger blower. Honestly for a street car, can anyone use more the 550-600 at the wheels? But it sure is fun having the extra HP

Damn.. you make me want to go roots blower instead of centrifugal when I do in the future!

[5PointSlow]

Originally Posted by Dan12GT Damn.. you make me want to go roots blower instead of centrifugal when I do in the future!

I got video of me dragging one of the almighty centri cars lol. That car was supposed to pull me up top as well. guess what, when I hit 150 I started creeping away. So much for the supposed top end pull that was gonna walk around me. That was on 93 oct as well.

[Grandpa]

Originally Posted by Dan12GT Damn.. you make me want to go roots blower instead of centrifugal when I do in the future!

It all depends on personal driving style preferences and long term goals for your car. A Paxton has more big peak horsepower potential with the ability to make over 1000rw, but obviously that will require a full build of the motor, trans, clutch, rear, fuel system etc. Having to spin it to 8krpms isn't exactly street friendly but doable if you drive like an idiot. haha.

With a positive displacement blower, while it may not have a peak horsepower potential such as centri type, the instant torque makes it MUCH more street friendly/fun to drive on the street.

I've had both and both are fun to drive, but for ME, the PD blowers are they way to go for a street car. SO much fun to drive, easy "set it and forget it" type driving as long as you have a good tire on it.

Most street encounters you come across are usually only a gear or two pulls. A PD car will jump out and pull instantly, while a centri car builds power with RPM and usually has to play catch up reeling in a PD car. Centri cars usually make great MPH on the top end, but if you don't have enough ground to cover or the PD car sees you coming they usually hit the brakes early (03/04 Cobra guys are notorious for this! lol)

So pick what fits your driving style best and run with it.

[5PointSlow]

Originally Posted by Steve It all depends on personal driving style preferences and long term goals for your car. A Paxton has more big peak horsepower potential with the ability to make over 1000rw, but obviously that will require a full build of the motor, trans, clutch, rear, fuel system etc. Having to spin it to 8krpms isn't exactly street friendly but doable if you drive like an idiot. haha. With a positive displacement blower, while it may not have a peak horsepower potential such as centri type, the instant torque makes it MUCH more street friendly/fun to drive on the street. I've had both and both are fun to drive, but for ME, the PD blowers are they way to go for a street car. SO much fun to drive, easy "set it and forget it" type driving as long as you have a good tire on it. Most street encounters you come across are usually only a gear or two pulls. A PD car will jump out and pull instantly, while a centri car builds power with RPM and usually has to play catch up reeling in a PD car. Centri cars usually make great MPH on the top end, but if you don't have enough ground to cover or the PD car sees you coming they usually hit the brakes early (03/04 Cobra guys are notorious for this! lol) So pick what fits your driving style best and run with it.

Knocking down the centri with a PD car! I gave him the hit and I spun. This wasnt even on E85 just my 91 tune with 93 in the tank. The PD blowers are monsters on these cars.