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3800sc flywheel balancing by Tuna Helper
Started on: 07-13-2014 10:19 PM
Replies: 1 (83 views)
Last post by: Dennis LaGrua on 07-14-2014 11:00 AM
Tuna Helper
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Report this Post07-13-2014 10:19 PM Click Here to See the Profile for Tuna HelperClick Here to Email Tuna HelperSend a Private Message to Tuna HelperEdit/Delete MessageReply w/QuoteDirect Link to This Post
I am full of dumb questions lately, but here goes… I bought a car with a 3800sc already swapped in. The friction disc went bad, and the pressure plate is damaged. I had the disc rebuilt and pp replaced. Now, I realized that the PO did not cut down the flywheel when he put it together. I don't know if he had it balanced or not. I just had it turned down to 0.840, which was almost 0.3 off the original thickness. Since it didn't vibrate before, should I have it re-balanced? I don't have anything to match the balance to. (Unless I buy and return one)
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Dennis LaGrua
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Report this Post07-14-2014 11:00 AM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Tuna Helper:

I am full of dumb questions lately, but here goes… I bought a car with a 3800sc already swapped in. The friction disc went bad, and the pressure plate is damaged. I had the disc rebuilt and pp replaced. Now, I realized that the PO did not cut down the flywheel when he put it together. I don't know if he had it balanced or not. I just had it turned down to 0.840, which was almost 0.3 off the original thickness. Since it didn't vibrate before, should I have it re-balanced? I don't have anything to match the balance to. (Unless I buy and return one)


The best way is to balance the flywheel to the old 3800 pressure plate or disassemble the engine, remove the crankshaft and have that balanced as an assembly. The second option is to go to a salvage yard and buy a used plate to be used as a reference and balance to that. The third option is to cut the flywheel and install it as is. You'd have a decent shot at that working. I know of a few 3800 swaps that did it that way with success.

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