ok so i've had a spec stage 2, fidanza flywheel and team green lsd in my car for about 4,000 miles now. well at first everything seemed fine, but now whenever i'm at a stop and i begin to let the clutch out (first or reverse) the car gives horrible vibs until the clutch is completely let up. sometimes it doesn't seem too bad and sometimes it seems like the car wants to just die right there. as i stated above it did not do this when it was first installed it is something that has just begun to happen in the past 500 miles.... it seems to be getting worse and i am just not sure where to start looking for something to be wrong. any help would be greatly appreciated. thanks a lot fellow jbo members
ecopower
does it feel like the engine or tranny is jumping around? Mine does that all the time and so does a few others i know that have the spec stage 3 clutch
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yea that's kinda how it feels, sometimes the car feels like almost dies and the dash shakes so hard i'm afraid it might break. i know that it isn't my driving because it didn't do this at first.....maybe it's a loose mount or something i'm going to look under there tonight, but if anyone has anymore help that would greatly appreciated.
ecopower
clutch chatter, and if its just starting it now after 4000 miles you got a problem somewhere.
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what would cause it to chatter so bad when taking off?
ecopower
The clutch disc uses a material with a higher friction coefficient, i.e., it slips less and the clutch chatters, instead of having a certain amount of slip. The lighter fly wheel doesn't help matters either, being unable to maintain the inertia to keep spinning. This is a common problem on circle track and road race cars using race type clutches and fly wheels, that's why they almost always take off so fast, to prevent the shudder and stalling. Stock clutches are made ore for comfort and are designed to slip more, where as a hi-performance/race clutch is designed for less slippage and more for a quick take up and grab. If you don't give it enough throttle on take off, it grabs and releases in rapid succession, causing the chatter or shuddering. Also, be careful not to let it slip too much under heavier acceleration, or you could glaze the clutch disc.
MadJack wrote:The clutch disc uses a material with a higher friction coefficient, i.e., it slips less and the clutch chatters, instead of having a certain amount of slip. The lighter fly wheel doesn't help matters either, being unable to maintain the inertia to keep spinning. This is a common problem on circle track and road race cars using race type clutches and fly wheels, that's why they almost always take off so fast, to prevent the shudder and stalling. Stock clutches are made ore for comfort and are designed to slip more, where as a hi-performance/race clutch is designed for less slippage and more for a quick take up and grab. If you don't give it enough throttle on take off, it grabs and releases in rapid succession, causing the chatter or shuddering. Also, be careful not to let it slip too much under heavier acceleration, or you could glaze the clutch disc.
the stage 2 should have no chatter at all really even with a light flywheel (ESPECIALLY ENOUGH TO SHAKE THE DASH!) theres a big difference in the clutch discs on a spec stage 2 and a stage 3, just about every thing changes.
my guess is the light flywheel heated up and has a hard spot or "slippery spot" and/or smoked the clutch disc and now you've got a hard spot on it causing chatter. either way i'd reccomend pulling it.
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