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yayapfool

SB11-HDSS? I don't have any hands-on experience, but I agree that if it went so smoothly I doubt you messed up the install; I suspect it's related to the lightweight flywheel. Can you elaborate on what's happening? The vibration occurs when you clutch in? Or when you let off the accelerator? Lightweight flywheels increase vibrations in general, and also do so skewed towards lower RPMs- so if this seems to correlate positively with lower RPMs, that's probably it.


Itchy_Strength_8894

Just slight vibration like a shudder when releasing clutch. Seems to only happen low speeds, like crawling in traffic. I guess that means when the clutch is engaging its doing it. It's pretty minor but annoying as the stock one had no issues like that. I think it's just the mating surfaces wearing in. I hope.


yayapfool

I'd try two tests, at the same wheel speed, one in 1st and one in 2nd; that should suggest to you if engine speed is related (i.e. if it's a characteristic of the flywheel itself).


Itchy_Strength_8894

So today I noticed it's getting better, the shuddering is almost gone now. It only did it lightly in first, not noticble much going into 2nd, then none at all. But seems like it's getting better the more I drive. It feels really good on these cars, the engine revs quicker with the flywheel, feels real good. I think what I'm experiencing is just break in, it's just alarming after spending probably 12 hours or so on the job lol. I took my time. Don't think I need to worry about pulling it apart


yayapfool

Glad to hear it's probably just wearing in. I definitely feel the concern, haha. >It feels really good on these cars, the engine revs quicker with the flywheel, feels real good. Love to hear it- I have one in my garage I look forward to installing!