clutch job gone bad... help

[96camarov6]

welp... my clutch was slipping so i decided to put in a new one in auto shop.
1st problem: the car vibrates like crazy, all gears neutral clutch in or out. maybe its the flywheel? i had it resurfaced.
2nd problem: the tranny drain plug was tightened too tight and it craked about an inch and a half down the drain on the tranny. im probably gonna get it welded. is that the best idea?

any input would be appreciated

[arthansen]

Did you mark the flywheel and make sure it went back in with the same orientation to the crank? If not, that could cause the vibration.

Did the vibration start right away? If not, maybe a bolt has come loose. All bolts torqued to spec?

Just some thoughts. Can't help with the transmission. Good luck.

[WickEdSix9838]

did you let the transmission hang on the input shaft and bend it?

[tdz16]

Since you had to take the driveshaft out, or at least unbolt it from the pinion, did you put it back out of phase? In other words if you spun the driveshaft 180 degrees while it was out, then bolted it back in, it may be out of balance now, thus causing the vibration. Let us know how you make out.
~Tom

[arthansen]

Probably not the drive shaft since it does it in neutral. WickedSix9838 has a very good point. That would cause it and would REALLY suck!

[Tru2Chevy]

Originally posted by tdz16:
Since you had to take the driveshaft out, or at least unbolt it from the pinion, did you put it back out of phase? In other words if you spun the driveshaft 180 degrees while it was out, then bolted it back in, it may be out of balance now, thus causing the vibration. Let us know how you make out.
~Tom

Putting the driveshaft in "out of phase" will not cause a vibration. The driveshaft is balanced off of the car, so it does not matter what way you put it back on.

- Justin

[AZ3.8Camaro]

I think you need a new tranny. I wouldn't really weld on it. You can try, but I wouldn't do it.

[tdz16]

Hey justin,
I agree about the driveshaft being balanced off the car, but I believe some driveshafts must be put back in exactly the same way they came out(with respect to the pinion flange). I could swear that there are cases in which the driveshaft has to be kept "in phase." I'll get more info to see if I am wrong. Thanks for making me think twice....I'm curious now.
~Tom

[Tru2Chevy]

Ok...let me know if you find anything, because I would hate to run around giving out wrong info.

I know that we have had Little G's driveshaft out a few times, and we never bothered to make sure that it was put back in phase, and he hasn't had any trouble. I have also done the same thing with tons of third gens, so I know that they don't have any problems with it either.

- Justin

[tdz16]

I had a third gen for a while and the driveshaft was in and out a few times without any issue. It was only after that that I "learned" (i put that in quotations pending its true) in school that a driveshaft, out of phase, could cause vibration. I dunno, i gotta remember to ask again. Sorry.
~Tom

[arthansen]

I just checked a GM Service Manual and here is what it says about re-installing the drive shaft (they call it a "Propeller Shaft")


Important
Align the reference marks on the propeller shaft with the reference marks on the pinion yoke to ensure the proper propeller shaft/pinion yoke relationship.


The mark is refrenced during the disasembally and they are telling you to put it back the way it came out.

However, I, as well as many others, have put the drive shaft back in on numerous occasions without making sure it is the same way and have had no problems. In the future, I would recomend everyone follows the advice of the Service Manual, it is very easy to do and it couldn't hurt.

However, this is not the problem with 96ComaroV6's vibration. Because it happens in neutral, it is something else.

[shenanigans]

For the weld, I think it should work out, I know a guy that cracked the case on a T-56 did that and hasn't had a problem since.


As for the wobbling, was the flywheel professionaly resurfaced or done by a classmate.

and does the car vibrate at a stand still?

[tdz16]

Wow, my professor actually was right....not that it matters anyway, seems like the common consensus is we all just stick our driveshaft in whichever way we want.... [img]graemlins/naughty.gif[/img]

Good luck with your problem though, sorry to go off topic....check the flywheel...

~Tom

[96camarov6]

the weld worked great thats back to normal again. the vibrating was because the tranny mount was too solid and the engine vibration made the whole car shake. stay away from the polyeurathane tranny mounts.

[arthansen]

Glad to hear the welding worked and you figured out the vibration. It must be quite a releaf. Great job.