Vibration mystery solved (I think)

[bull]

I got my engine pulled yesterday and when I went to pick it up the trans was loose from the engine and four or five bolts were missing. They said it was loose when they pulled it. I'm assuming this would cause the vibration in the clutch pack and/or flywheel. Hopefully that's it and there isn't much damage. I won't have a chance to seperate the engine and trans for a week or so but I'll let you all know what I find. I wonder how long it was run with the tranny loose like that. It's been sitting for dang near 8 years.

[bull]

Here's the amount of gap there was between the engine and trans. Would this cause a vibration?

[RD]

holy cow    how did those "chips" get in your bellhousing?

[bull]

No idea. I got it as-is, no warranty.

[Chryco Psycho]

it defiantly could be causing the vibration , there are 2 grooves cut into the belhousing , looks like a crack beside the one though

[Ghoste]

That could easily be enough gap to cause that problem Bull.  I had a vibration once that came down to loose bellhousing bolts and there was NO visible gap between block and bell.  You won't know for sure until you drive it but that is a good suspect IMO.

[firefighter3931]

I'll agree with the other posters....that is a problem that could easily cause vibration. The bellhousing should be closely inspected and replaced if necessary. The input shaft and crank register will also need a good going over to make sure that there was no damage due to misalignment.

Is the tranny being rebuilt ? The input shaft should be checked for horizontal/vertical play and forward/aft movement in the case. I'm by no means a 4spd expert but this is what i wold consider a safe course of action before the car is reassembled. Good luck Curtis, the black beast is gonna be awesome ! 

Ron

[Ghoste]

That's right.  I forgot how easy it is to get those pilot bushings out of round in the back of the crank.

[Steve P.]

More the defffffffinately......  Sometimes people laugh at me when I wire wheel bolt threads and use plenty O' thread lock.. I had a boss that used to tell me I was wasting his money on that shit!!.. I also reallllly like shoulder bolts with the curly knurls in them.. They like to stay put..

I am damn sure with these guys, Bull... All the way..

[bull]

I'll agree with the other posters....that is a problem that could easily cause vibration. The bellhousing should be closely inspected and replaced if necessary. The input shaft and crank register will also need a good going over to make sure that there was no damage due to misalignment.

Is the tranny being rebuilt ? The input shaft should be checked for horizontal/vertical play and forward/aft movement in the case. I'm by no means a 4spd expert but this is what i wold consider a safe course of action before the car is reassembled. Good luck Curtis, the black beast is gonna be awesome !  

Ron

The tranny will be rebuilt for all intents and purposes. I plan on buying a rebuild kit and having a friend of mine do it. He owns a transmission shop and a '69 Camaro. Yea, I know but he's had it since he was in high school so I cut him a break. Besides, he was my friend BEFORE I found out about the Chevy.

More the defffffffinately...... Sometimes people laugh at me when I wire wheel bolt threads and use plenty O' thread lock.. I had a boss that used to tell me I was wasting his money on that shit!!.. I also reallllly like shoulder bolts with the curly knurls in them.. They like to stay put..

I am damn sure with these guys, Bull... All the way..

Steve, what are "shoulder bolts with the curly knurls in them." Don't worry, I'm all about thread locker and using a torque wrench and all that stuff too. Cheap insurance if you ask me.

[Nacho-RT74]

OK I'm on same deal. Vibrations when I arrived to 100 miles. last week my car is on mechanical fixing oil leaks and told me some bolts was loosen between tranny a engine. he put some longer bolts, because bolts were isolated, probably damaged engine thread... will see tonight if was that.

[Ghoste]

Hmmm, are we getting to the point where these old things have been apart so many times and beat on so much that they are just starting to shake loose from under us?

[Khyron]

thanks guys, now i'm pariniod, i'll be back later after I crawl under my charger and check all my bolts 

[Ghoste]

Never hurts to do once in a while anyway.  Things get loose after a few decades.

[ChargerAndy]

I have to disagree with all of you..... there is no way that space between the block and bellhousing would cause a vibration. Bull, if I were you I would check your glove box latch     Don't feel bad....... happens all the time          

Seriously, better to find THAT which is so obvious than to have the mystery vibe to drive you nuts! I had a vibe and it turned out to be the slip yoke ( I think thats what its called   ) anyway, made a world of difference. Keep us posted on the resto! Andy

[Ghoste]

Really??  Tell you what, go out to your car right now and back all the bellhousing bolts off just one or two turns and take her for a rip and then come report back to us.

[bull]

I have to disagree with all of you..... there is no way that space between the block and bellhousing would cause a vibration. Bull, if I were you I would check your glove box latch     Don't feel bad....... happens all the time          

Seriously, better to find THAT which is so obvious than to have the mystery vibe to drive you nuts! I had a vibe and it turned out to be the slip yoke ( I think thats what its called   ) anyway, made a world of difference. Keep us posted on the resto! Andy

I hear you. I hate the mystery problems that never seem to get solved. I even prefer the expensive repairs so long as they are obvious.

Really?? Tell you what, go out to your car right now and back all the bellhousing bolts off just one or two turns and take her for a rip and then come report back to us.

He's just joking Ghoste.

[Ghoste]

My apologies.  I shouldn't be on this thing at 1 and 2am.

[ChargerAndy]

My apologies.   I shouldn't be on this thing at 1 and 2am.

Man o Man.... I thought 5 banana men would make my jokin obvious.... no worries Ghoste, early mornin computer has gotten me too!

Bull, I bet your eyes popped out of your head when you saw that gap, I know mine woulda....... Glad youre movin forward on the car.... did you ever use those New York quarter panels? Andy

[Ghoste]

Banana men??  I had to scroll back up and look for those, I guess I sorta missed 'em the first time around.  Sheesh.