Clutch help

[J.Shoot]

I have changed to the MGW shifter already and changed the fluid last week, so no change.

My best time is a 7.11 @ 99 mph. I was launching at 4,000 rpm and hooking good. I tried to increase my launch rpm to 5,000 and the car breaks loose. I'm running 15" wheels with MT ET streets with 14-15 psi. I'm going to go back to 4,000. Maybe work up a little if it will hold.

[re-rx7]

Originally Posted by Toby I would definitely change the fluid. If that does not help then look into a better clutch. At your power level and as much as you track it, a clutch will be very beneficial. If I remember correctly we installed an mgw shifter in this car.

Whats the limit on the stock clutch toby? I see varying numbers....

Originally Posted by Toby Also if you plan to track it often I would highly suggest flushing the brake system and the clutch fluid with motul 600 fluid as they both share the same canister.

Did not know this.

Originally Posted by J.Shoot I have changed to the MGW shifter already and changed the fluid last week, so no change. My best time is a 7.11 @ 99 mph. I was launching at 4,000 rpm and hooking good. I tried to increase my launch rpm to 5,000 and the car breaks loose. I'm running 15" wheels with MT ET streets with 14-15 psi. I'm going to go back to 4,000. Maybe work up a little if it will hold.

Sounds more and more like tranny probs.

[Toby]

Originally Posted by re-rx7 Whats the limit on the stock clutch toby? I see varying numbers.... Did not know this. Sounds more and more like tranny probs.

It does vary, but I would recommend changing if you are over 600 rwhp and plan to drive it hard often. I have seen bolt on cars blow the clutch and I have seen 800 rwhp cars holding on the stock clutch.