|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.
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "