Another clutch balancing question.
Thread Starter
Drifting
Joined: Feb 2002
Posts: 1,422
Likes: 4
From: Schererville Indiana
Senior Member
Cruise-In V Veteran
Another clutch balancing question.
I have read some archived posts about balancing clutch assemblies. They all seem to be pretty clear. The flywheel and pressure plate should be zero balanced together if I understand correctly. I took mine in to a local speed/machine shop and asked to have my parts balanced. The guy looked at me like I had two heads on my shoulders. He said the motor is externally balanced. Long story short, he is going to check to see where they are at as an assembly and get back to me. Did I mistunderstand something or is he maybe not as familiar with LSx parts?
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Re: Another clutch balancing question. (NV MY C5)
Final engine balance is done with the clutch assembly attached to the flywheel.
Your new flywheel and clutch should be balanced to your old flywheel and PP assembly.
A zero balance on these parts MAY give you a vibiration you will not like.
Why take a chance? :cheers:
Your new flywheel and clutch should be balanced to your old flywheel and PP assembly.
A zero balance on these parts MAY give you a vibiration you will not like.
Why take a chance? :cheers:
Racer
Joined: Mar 2003
Posts: 292
Likes: 0
From: Southbury CT
Re: Another clutch balancing question. (Billf6531)
I'm not so sure the mechanic is wrong. I would have agreedc with Bill before I read on the Forum all the problems guys have encountered by assuming the LS1 is internally balanced. Personally, I installed a new clutch and flywheel that were zero balanced, and I had no problems with vibrations. But many others have, and the problem is so difficult and expensive to solve that it sure would be great to get a final answer. Certainly when an engine is built by a shop, it can be, and is, internally balanced. Then the flywheel and pressure plate should be zero balanced individually. But Chevrolet has published conflicting instructions if you haven't taken youir engine apart and balanced the rods, crank, and pistons. Prior to, I think, 2002, if you replaced the flywheel, you had to mark its orientation to the crank, and transfer any weights on the old flywheel to the new one, making sure they were balanced identically. I saw a post 2002 service advice that said you did not have to do this. I'm not answering the question definitively, but the answer is not so cut and dried.
