jeffsqartan
Expert
- Nov 21, 2012
- 1,302
- 83
Motor mounts were one of the first things I replaced on this car. Same with the harmonic balancer, then I think I did the transmission mounts.The others are right there were two different flywheels. But I'm inclined to agree that hitting the shift perfect shouldn't change that if the combo was wrong.
First I would look at the engine mounts if they are a factory type with rubber. I have heard your description twice that I can recall...many years ago now, and both of those cars had a trashed pilot bearing (bearing not bushing). Some cars had a solid bushing too.
It's plausible that you could have a U joint getting sloppy. Seen those cause a vibration mostly at highway speeds though.
The driveshaft has been rebalanced twice since I've had it. You can still see where they wrote my name on it last time it was there rofl. I think I did it like two years ago. The vibration happens regardless of the position of the car. Sitting still in the driveway and it will do it.
Man... the pilot bearing.... So there's two things I can't remember at this point.
1 - I think I changed the pilot bearing when I rebuilt the transmission last year. But I also may NOT have done that.... I know I have a new bearing in the garage, but can't remember if I swapped it. When I did the clutch about 3-ish years ago, I know that I did change the pilot bearing.
2 - when I had the transmission out last year, I started the car without the transmission in it. Flywheel, clutch, and bell housing were in; no trans. I did it to see if the engine would vibrate without the trans attached. And I can't find any freaking notes, or texts, or anything that tells me what I found when I did it. Kind of irritated by that. I want to say that it still vibrated, but I seriously can't remember. Too many moons ago.