| RE:[1992 LT1/MN6] My Engine is dying... |
Subject: RE:[1992 LT1/MN6] My Engine is dying... by bogus on 2007/10/30 1:25:47 You are missing the point - I can't be without my car. I wish I could easily fix the vibration, but it isn't fixable. Here is the score with that damned vibration - and it's as much my fault as anyones for believing Tom at Carolina Clutch: The dual mass flywheel (DMFW) is the external rear balance for the LT1. On the DM is a series of small holes that accept small weights that will fine tune the balance. Without those weights, you will get vibration. As it stands, a new DMWF is $700.00. I know there is a procedure to fix vibrations for the LT4, what I don't know is if that will directly apply (beyond the scope of the TSB) to an LT1 with a DMFW without any weights. With Tom's suggestion, I bought a fidenza aluminum SMFW... it supposedly has this weight to balance all LT1s. BULL! It didn't. at 4000 RPM this vibration kicks... and only gets worse as the RPMs increase. I was a moron and an idiot. To add insult to injury, I tossed the old DM, so I can't match balance it. Ok, so I fix the vibration... I am at $900.00 (cause I will need other clutch parts anyway) and still have a dying headgasket... The engine I want to build, a quality 383, would not be cheap, and with plans of buying a house within the next couple of years, it's low priority. I can do this used motor for chump change and perhaps get the 383 bug out of my system for a long while. So with one fix, I am replacing the flywheel on a maybe... or I am replacing the engine with a maybe... perhaps they are both bad ideas, but I am not in the mood to unass $4k on another maybe... I will reiterate, used motors are not a bad thing. I know many folks with good experience with them, so it's not a concern. |
