Torque tube replacement
Thread Starter
1st Gear
Joined: Jul 2017
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Torque tube replacement
My son has a 2016 C7 Z51 which has been in the shop 4 times for torque tube replacement as well as other things related to that. Before this last trip to the dealer the next repair would be a complete replacement of the engine and transmission. GM overnighted a prop shaft bolt that is to be torqued higher than previously with specific instructions to the dealer tech to not touch the car until directed by GM engineer. Wondering if anyone else has found the bolt to be the source of all the torque tube/flex plate problems. I have a 2017 GS and just waiting for problems to arise.
Le Mans Master
Joined: May 2000
Posts: 8,729
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From: Redmond WA
No, but I'll throw out one thing that might be important. When we see a torque tube replacement it seems like there's a small chance that car winds up with a thrust bearing failure in the engine some time later.
It's because the torque tube must be properly aligned, and if it's not, it "presses" on the crankshaft, perhaps at an angle, and it wipes out the thrust surface.
How you gently hint to your dealer "don't screw up the torque tube alignment" I don't know. Maybe an anecdotal story about a friend (me!) that told you a story about it?
Otherwise I'm not aware of a common thread of cause of the torque tube failures themselves, sorry.
It's because the torque tube must be properly aligned, and if it's not, it "presses" on the crankshaft, perhaps at an angle, and it wipes out the thrust surface.
How you gently hint to your dealer "don't screw up the torque tube alignment" I don't know. Maybe an anecdotal story about a friend (me!) that told you a story about it?
Otherwise I'm not aware of a common thread of cause of the torque tube failures themselves, sorry.
Last edited by davepl; Jul 20, 2017 at 12:37 PM.
Safety Car
Joined: Dec 2012
Posts: 3,826
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From: St. Louis Metro East IL
Here are links to a couple of Chevy tech articles on torque tube replacement that Dave was referring to. There are several threads on torque tube issues. Apparently the issue has not been resolved.
http://www.corvetteactioncenter.com/...dure-1313.html
http://www.corvetteactioncenter.com/...gnment-22.html
Good Luck!
Ron
http://www.corvetteactioncenter.com/...dure-1313.html
http://www.corvetteactioncenter.com/...gnment-22.html
Good Luck!
Ron
Last edited by RonC7; Jul 20, 2017 at 06:11 PM. Reason: .
