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I am a fairly new C2 owner. It is a 1964 with the original 327/365hp and an M19 transmission. The engine was removed and rebuilt by PO and has less than 1,000 miles.
Yesterday on a fairly long ride in the mountains, it started making a horrible noise. At first I thought it was the transmission, but later someone suggested that it may be the flywheel. There is no noise when the car is in gear and under power. But, when I push the clutch in, it periodically makes a noise that sounds like something rubbing on a piece of metal that is turning very fast. Very high pitched and rattly is the best way i can describe it. Usually when I engage the clutch to slow down. It usually only lasts a second or so but was getting worse by the time I got home.
Any suggestions? Also, can anyone recommend someone in East Tennessee to work on it? I think this one is over my head. Thanks!!!!
Less likely chance something (possibly an overlong bolt end) is hitting the inspection plate on the front of the bell housing. Push the clutch in and the flywheel moves forward within the limits of the engine's thrust bearing. One of the easier possibilities to check and discount first.
My guess is it's this piece hitting the flywheel bolts. It would/could get worse when you shove the clutch end and push the end play in the crankshaft forward.
It's not uncommon for them to get bent slightly and cause the problem. I think the later replacements have extra metal for the shield to latch around something under there to prevent the interference.
My guess is it's this piece hitting the flywheel bolts. It would/could get worse when you shove the clutch end and push the end play in the crankshaft forward.
It's not uncommon for them to get bent slightly and cause the problem. I think the later replacements have extra metal for the shield to latch around something under there to prevent the interference.
My guess is it's this piece hitting the flywheel bolts. It would/could get worse when you shove the clutch end and push the end play in the crankshaft forward.
It's not uncommon for them to get bent slightly and cause the problem. I think the later replacements have extra metal for the shield to latch around something under there to prevent the interference.
That is EXACTLY what happened on my 67 Chevelle SS-396....and it was the most gosh-awful noise you can imagine but a 20 minute repair when all was said and done...
Thanks for the feedback. If a bolt is backing out of the flywheel, I assume that i would be able to see marks on the back of the inspection cover plate where it was rubbing. At that point, it would just be a matter of re-torquing the flywheel bolts? Thanks!
Thanks for the feedback. If a bolt is backing out of the flywheel, I assume that i would be able to see marks on the back of the inspection cover plate where it was rubbing. At that point, it would just be a matter of re-torquing the flywheel bolts? Thanks!
No, you have it backwards. The flywheel bolts go rear/front. so if they came loose, less likely to rub. But if the shield is bent, they can easily rub on the flywheel bolts.
Get up under the car and see if that shield is bent or otherwise distorted around the oil pan flange. Sometimes, a reef or two with a screwdriver to spring it forward is all that's needed. That is, if a bent shield is the problem.
No, you have it backwards. The flywheel bolts go rear/front. so if they came loose, less likely to rub. But if the shield is bent, they can easily rub on the flywheel bolts.
Get up under the car and see if that shield is bent or otherwise distorted around the oil pan flange. Sometimes, a reef or two with a screwdriver to spring it forward is all that's needed. That is, if a bent shield is the problem.
No, you have it backwards. The flywheel bolts go rear/front. so if they came loose, less likely to rub. But if the shield is bent, they can easily rub on the flywheel bolts.
Get up under the car and see if that shield is bent or otherwise distorted around the oil pan flange. Sometimes, a reef or two with a screwdriver to spring it forward is all that's needed. That is, if a bent shield is the problem.
Agreed, this happened to me, scared the daylights out of me.
Yes, listen to Mike. Very, very unlikely a flywheel bolt has backed off. If it did, your clutch action would be terrible....the bolt would hang up on one of the clutch disc springs, which would cause the clutch to hang up and not release. Not your problem here.
When I restored my first '57 years ago, I used ARP flywheel bolts, which had been my habit for many years. At first start, there was a terrible racket - sounded like being in a tin outhouse in a hailstorm; scared hell out of me. Simple problem - the ARP flywheel-to-crank flange bolts were about .060" longer than the GM bolts, which was just long enough to expose the end of the bolts to the back side of the dust shield. A bit of minor metal work to the shield, and the problem disappeared.
OKay, thanks Mike and all others. I will check the inspection cover. It is very strange to me that it could have gotten bent because i was just driving down a smooth road when it started. The engine and transmission were rebuilt by PO and everything looks like new. Shiny paint on motor, tranny, etc. Thank you very much for the feedback.
Okay, sorry for the delay. After much research, the noise appeared to be coming from the transmission itself. I sent the car to Buy a Vette in Atlanta. I would highly recommend them. They have a good inventory of C1, C2, &C3's along with newer models as well. They also have the largest Corvette only Service Department in the SE. Sam runs that department and was fantastic to work with.
They removed the transmission and found that there were two bearings that were loose and making noise. Additionally, i had a couple synchros that were chipped. They replaced all the worn parts, put in a new clutch (didnt really need it, but while it was apart, i figured it made sense), and put it all back together. I have put about 50 miles on it and it runs great.
Thanks to all of you who offered advice. I greatly appreciate it!!!
I would also recommend R and J Elite Transport. https://www.randjelitetransport.com
They were extremely professional and fairly priced. They ship all over the US. My Baby.
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Transmission/Flywheel Problems
