Someone told me to always mark the flywheel position before you unbolt it so it can be reinstalled in the exact same position. It suppose to maintain engine balance. Does this apply with the Preludes?

When I did my clutch I didn't mark the position.

Right now the problem I am having is in ever gear at 4k RPM I hear this whirling noise like something is wobling. It only happens at 4k RPM +/- 100-200 up or down. I first had this problem when I had someone replace my clutch and flywheel so I thought I'd replace it myself with a new set, and my old flywheel resurfaced. Still have the same problem after installing the new one. Any Ideas?

Start Qoute:I found this on another site...sounds like my problem...!
This brings us to another law of physics. Every object wants to rotate about its own center of gravity. Toss a chunk of irregular shaped metal into the air while giving it a spin and it will automatically rotate about its exact center of gravity. If the chunk of metal happens to be a flywheel, the center of gravity should be the the flywheels axis. As long as the center of gravity for the flywheel and the center of rotation on the crankshaft coincide, the flywheel will spin without vibrating.

But if there is a heavy spot on the flywheel, or if the flywheel is not mounted dead center on the crank, the center of gravity and axis of rotation will be misaligned and the resulting imbalance will create a vibration

maybe I should just get a COMPLETELY NEW OEM Flywheel?

 

If you are talking about the bolting the flywheel to the engine then it can only go in one way. There is a tab that makes this happen so that the timing marks on the flywheel are right. If you are talking about bolting the clutch to the flywheel then if they came bolted together they may be balanced. The company you bought it from should be able to tell you. If that is the case then you do want to mark the clutch and flywheel so that you can bolt them up the same way they came to you.

 

if clutch/flywheel were unbalanced it would shape throughout the whole rpm range not just 4 grand. the flywheel and pressure plate can only go on one way.

 

well i dont really feel a shake...the car runs fine. it just has a off balanced sound to it at 4k rpm. Kinda like a wobble sound. Started after my first clutch and a 12lbs flywheel replacement.

 

Well I'm going to replace my Clutch and Flywheel again soon so any recommendations? My motor is all stock and I don't plan to build it any time soon so Should I just go with a stock setup? Wuts the stock set up? 21lbs flywheel?