Anyone know where, or who sell, Spec Clutch's ??

Thanks in advance.

EDIT:

Powergoals - 420 - 450 whp and 300 - 350 wtq

Need everyones opinions on what I should use for clutch set up with considering two things:

1 - Capability of handling that power
2 - Streetability

Thanks.

 

why not go with a exedy stage one?

spec isnt that great from word of mouth and reviews.

Just an opinion.

 

actually,

ive heard the opposite - Ive heard Spec clutch's for turbo S's are a great product.

exedy stage one is also $1500 + which yes, comes with a flywheel, but for my set up coming, the stock OEM flywheel is preferred with Turbo due to its weight.

Generally, a heavier flywheel is best for turbo applications (so the RPMs do not drop as quickly between shifts).

It will lower HP a TAD compared to a lighter flywheel (less parasitic loss with the lightened flywheel), but torque will be higher with a heavier flywheel...

Lighter flywheel is best suited with SC applications.

Spec Stage 2+ will hold up to 420 lbs tq. Exedy Stage 1 is good for 300, and I will have more then 300 wtq .

 

oops sorry didnt know you were turbo'd/turboing.

I should have asked my bad

 

Im going turbo soon also.. what flywheel have you decided upon Ap2 or Ap1? I have an Ap2 as well, but was thinking of going with an Ap1 flywheel because its slightly lighter but not to crazy where you drop RPM's like on other setups, I think it would be a good balance for an Ap2.

 

No worries man. I was originally going SC, but that changed due to a few concerns etc.

 

wtf - I just typed out a whole explanation for my choice and it didnt show up....lol, wierd.

Im sticking with AP2 flywheel. Ap1 will give you a bit mpre HP, but less TQ then the AP2. Personally, I want torque so I would save the money and keep the Ap2 flywheel.

What turbo kit did you go with?

I just sent my money order for Mase's kit. cant wait.

 

A heavier flywheel will not give you more torque. That is a common misconception. It gives you more streetability because the revs don't drop as quickly when you let the clutch out from a stop and because the revs drop slower between shifts, which is great for shifting slowly. If heavier flywheels actually increased torque, why aren't we all rolling around on 1000lb flywheels?

Actually, if you can handle the decreased streetability of a lightweight flywheel, it is better in ALL engine setups because the decreased rotating mass leads to less parasitic loss. In the case of a turbocharged engine, a lighter flywheel leads to quicker spool.

 

True to a point, but you may have mis understood as well.

A heavier flywheel will not PRODUCE more TQ out of the engine, however it will provide more TQ to the wheels from what you have to work with.

Simple way to settle this would take the same set up, do a few pulls with an 11lb flywheel, and then wap out and do a few with a 22lb AP2 flywheel.

TQ will be higher with the heavier flywheel, but WHP will be higher with the lighter flywheel.

Also, in regards to your last comment - how does a lighter flywheel result in quicker spool if a lighter flywheel drops your rpms faster then a heavier flywheel??

If you have a heavier flywheel, your rpms dont drop as fast - thus leaving you in a higher rpm range and the turbo more so spooled.

 

Lighter flywheel = quicker to reach higher revs = quicker spool.

My turbo Saab is equipped with a lightweight flywheel, and it's quite noticeable. Also of course the lighter flywheel aids considerably with throttle response. But I'd stay away from race type 4 or 6 puck discs on the street, those tend to 'machine' the flywheel friction surface rather quickly. And of course, racier discs are much harder to drive nice and smoothly on the street, another downer...especially starting uphill. In my experience, the best combination is a lightweight flywheel combined with an OE type disc, or a disc with much organic content in the compound.