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My son's '90 needs a new flywheel, and the stock dual mass is made of gold or platinum so he's considering a Centerforce steel single mass unit which we know will introduce some rattling noise. The question is, has anybody installed one and how much of a nuisance is the noise?
The noise is a substantial nuisance. The next time I redo my clutch I'm seriously considering going back to a dual mass. If my car was still a daily driver there would be no question about switching back.
I would highly recommend listening to a car with a single mass before going for it.
That being said it's not too horrible. It's mostly just irritating when you are feeling happy that you drive a Corvette, stop at a stopsign and watch people give you questioning looks because of that rock tumbler noise coming from your otherwise nice car.
The single mass flywheel will make more noise than a stock dual mass, but there are a couple things you can do to help. The stock clutch disc is a solid hub. If you put a sprung hub in it , it will help alot. Also, raising the idle to 850-900 also helps alot. The noise will be most noticable at idle, but if you push in the clutch while idling, the noise will go away. With a higher idle and a fairly loud exhaust... you probably won't hear it at all.
Thanks for the feedback; that's what we were looking for. At this point, we're going to try it since there's a $500 difference, so we'll see (or I guess hear) what happens.
I converted my 91, it does make more noise. When it's cold the noise is noticebly less ( thicker oil ), so I'm going to change my oil to the BMW ( Castrol ) 20/60. I think this will help also. Other than the noise I love it.
My son's '90 needs a new flywheel, and the stock dual mass is made of gold or platinum so he's considering a Centerforce steel single mass unit which we know will introduce some rattling noise. The question is, has anybody installed one and how much of a nuisance is the noise?
I find the noise irritating. It was less intrussive after some exhaust work. The rougher the idle the more the rattle. I have the hotcam so... Mine is not a daily driver, but I may consider going back to the dual mass.