Hopefully replacement of the torque tube will solve the problems and no others will crop up.
What's next?
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What's next?
I purchased a new 2016 A8 in mid August. Replaced flex plate in mid November with 4000 miles after rattling at idle. Everything fine until yesterday when new minor engine noises appeared. This morning car started making very loud ticking noises and vibrating. I drove directly to dealer, corvette tech started car, very loud shreek like noise.
Diagnosis-drive line support tube which I guess is torque tube needs to be replaced.
Think the two repairs are related and could the engine be next?
Or just relax? the vette tech has a very good reputation.
Diagnosis-drive line support tube which I guess is torque tube needs to be replaced.
Think the two repairs are related and could the engine be next?
Or just relax? the vette tech has a very good reputation.
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I purchased a new 2016 A8 in mid August. Replaced flex plate in mid November with 4000 miles after rattling at idle. Everything fine until yesterday when new minor engine noises appeared. This morning car started making very loud ticking noises and vibrating. I drove directly to dealer, corvette tech started car, very loud shreek like noise.
Diagnosis-drive line support tube which I guess is torque tube needs to be replaced.
Think the two repairs are related and could the engine be next?
Or just relax? the vette tech has a very good reputation.
Diagnosis-drive line support tube which I guess is torque tube needs to be replaced.
Think the two repairs are related and could the engine be next?
Or just relax? the vette tech has a very good reputation.
This
Team Owner
Joined: Sep 1999
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From: Springfield MO
Unlike the C5 and C6, the C7 requires quite a bit of professionalism when removing and reinstalling the torque tube.
When your flexplate was replaced, the "Tech" had to remove the torque tube to access the flexplate. Appears as if he did a crappy job of reinstalling the torque tube(did not follow the service manual) and possibly damaged the crankshaft thrust bearing in the engine.
Not the first time this has happened.
When your flexplate was replaced, the "Tech" had to remove the torque tube to access the flexplate. Appears as if he did a crappy job of reinstalling the torque tube(did not follow the service manual) and possibly damaged the crankshaft thrust bearing in the engine.
Not the first time this has happened.
Last edited by JoesC5; Dec 12, 2015 at 11:55 AM.
Safety Car
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thrust bearing issue sounds about right. they can go bad or could of been damaged during the flex plate (flywheel) replacement. The torque tube and driveshaft push into it and if its forced in there not quite aligned right it can get damaged. The flex plate rattling? that seems a little weird? where the flex plate bolts not tight or what? warranty will take care of ya tho
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Thread Starter
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thrust bearing issue sounds about right. they can go bad or could of been damaged during the flex plate (flywheel) replacement. The torque tube and driveshaft push into it and if its forced in there not quite aligned right it can get damaged. The flex plate rattling? that seems a little weird? where the flex plate bolts not tight or what? warranty will take care of ya tho
The torque tube problem as I understand it had something to do with a loose bearing dislodging or moving out of place. The vette tech ordered the entire driveline support tube to replace.
Safety Car
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From: IL / FL .
The flex plate rattling had something to with the riveting. The Z06 forum has quite a few flex plate issues.
The torque tube problem as I understand it had something to do with a loose bearing dislodging or moving out of place. The vette tech ordered the entire driveline support tube to replace.
The torque tube problem as I understand it had something to do with a loose bearing dislodging or moving out of place. The vette tech ordered the entire driveline support tube to replace.
Unlike C5 and C6, on a C7 the reinstallation of the torque tube requires a careful procedure or engine thrust bearing damage may result.
After replacing the entire driveline support tube the tech may find thrust bearing damage (based on all the loud engine noises mentioned).
Thread Starter
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The flex plate issue is not uncommon.
Unlike C5 and C6, on a C7 the reinstallation of the torque tube requires a careful procedure or engine thrust bearing damage may result.
After replacing the entire driveline support tube the tech may find thrust bearing damage (based on all the loud engine noises mentioned).
Unlike C5 and C6, on a C7 the reinstallation of the torque tube requires a careful procedure or engine thrust bearing damage may result.
After replacing the entire driveline support tube the tech may find thrust bearing damage (based on all the loud engine noises mentioned).
Safety Car
Joined: Sep 2008
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From: Location: Location: kAnSaS
The flex plate rattling had something to with the riveting. The Z06 forum has quite a few flex plate issues.
The torque tube problem as I understand it had something to do with a loose bearing dislodging or moving out of place. The vette tech ordered the entire driveline support tube to replace.
The torque tube problem as I understand it had something to do with a loose bearing dislodging or moving out of place. The vette tech ordered the entire driveline support tube to replace.
they will just replace it while they are there not a big deal,,,,, if it were me I wouldn't suggest it I would just make sure it gets done even if you have to buy the bearing for like 20 bucks. Its a simple deal to replace it once the tube assembly is out of the way which it will be in your case. just a simple slide hammer with the right adapter on it pops it out and then just tap it back in. no big deal.
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From: Location: Location: kAnSaS
here's a pic of a c6 flex plate, interesting makeup,,,,,, a lot of stuff going on there. I would have to see a better how the alignment all works. BUT by looking at the snub piece that goes into the thrust bearing I would think they would have some sort of an alignment tool to make sure that baby is going in dead ***** on. If not you could certainly offset the bearing possibly or more then likely "BEND" that black inner snub piece looking thing. then you are gonna have some problems with noise or out of balance. I would for sure make certain the flywheel inner portion is ok. If they just do the flywheel out part not sure that's gonna fix it.
I think that black inner piece is what aligns with the thrust bearing, you can see in that pic where there are like 3 rivots but also theres 3 bolts? id have to see that in person to figure that one out but I can sure some issues with that setup, forsure
I think that black inner piece is what aligns with the thrust bearing, you can see in that pic where there are like 3 rivots but also theres 3 bolts? id have to see that in person to figure that one out but I can sure some issues with that setup, forsure
Last edited by HANNY; Dec 12, 2015 at 09:31 PM.
The Consigliere
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From: 2023 Z06 & 2010 ZR1
If the thrust bearing is damaged it requires overhauling the bottom end of the engine. The thrust bearing is on the crankshaft, and some Stingray owners unfortunately have had that damaged when a their torque tube was removed and reinstalled improperly.
Thread Starter
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My flex plate was replaced a month ago. My torque tube is ordered and not installed yet. Hopefully it will be reinstalled properly. Based on another post I thought the thrust bearing could have already been damaged after the flex plate was replaced?
The Consigliere
Joined: May 2006
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From: 2023 Z06 & 2010 ZR1
Could also be the problem is solely the torque tube as well - two separate/distinct issues. As to the thrust bearing impact, any time the torque tube is removed and reinstalled (which happened when your flex plate was replaced, and will happen again as your torque tube is replaced with a different/new one), the tech must be cautious to avoid damaging the thrust bearing in the engine.
If the tech is good, you'll be fine.
Last edited by OnPoint; Dec 12, 2015 at 09:52 PM. Reason: spelling/clarification