Dan Parker '96

Just got the word from the dealership today. New engine on the way (still under warranty). 6700 miles, completely stock, never driven hard until oil temps at least 140 (then driven like it was meant to be), never tracked, no missed shifts (have tagged the limiter only twice, barely).

Car was used regularly year round (gets out about every six weeks). I'm a bit disappointed but hopefully the replacement engine proves to be more robust. My '96 is modified but has spun to 7k for the last 20k miles without issue. You'd think an engine actually designed to spin there would have no problems.

Black96WS6

Sorry to hear about that, at least it's covered though!

Every week (sometimes more often), another member reports an LS7 failure here...

lucxy

My 2009 z06 is also waiting for a new engine (14K miles). Same problem: main bearing failure. Although mine seemed to be caused by a failed oil pump, which in turn caused overheating of the main bearing(s).

Did the dealer tell you why yours spun a bearing? Oiling problem?

Dan Parker '96

Dealer didn't mention specific cause. I'll have to ask later. Bearing damage was limited to the #2 bearing though. I still need to visit the dealer to take some pictures.

Turbooo2u

The GM engineers at Carlisle actually acknowledged the problem but insisted they were with early models only and the problem was resolved.

lucxy

Any further details? What did they acknowledge exactly? What problem was corrected and how? Would be nice to see some details.

lucxy

I bet they don't know, or if they do they wont tell you.
My dealer has no clue what happened to my engine. All they know is that the main bearing is bad. How and why? -- No answer. Either they know and don't say, or they don't know. I talked to a tech who worked on my car and I asked him directly what caused the failure and the tech had no clue, which is a little disturbing, since it is not possible to say that simply replacing the engine fixes the problem. Maybe it will fail again after X number of miles down the road with the same problem. Hard to say.

Hirohawa

That is awful. Glad you are getting a new engine.

Mike.D

wow, this is Awful. G.M should stop making Corvette commercials of Vettes driving around race tracks, instead they should show them at a car show or in a nice Garage. Sorry fellas, Im just frustrated with all these Ls7's going down.

FRDnemesis

okay, that was pretty!

Dan Parker '96

Just went up and snapped some pics. This one is representative. #2 bearing is the really smoked one. Notice towards the bottom of the pic at the #2 bearing that the bearing shell has actually shifted above the block ("spun"). The other bearings are scarred, most likely from the shrapnel.

dvandentop

wow glad your getting it covered, did it lock up completely??

Dan Parker '96

Loss of oil pressure (8psi at idle, never got above 40psi) and a mild knock were the only symptoms. I caught it quickly.

Mike.D

So does this mean you only need to replace bearings, crankshaft, and the cost of the work and re installation? sry to hear this happen to you, hope you're back up soon.

tim414

Dam...glad it's covered. Hopefully 'if' they do know, the new one is fixed and no more hassle...

LS9Drew

Wheres the link to this? The latest info from Carlisle was about improper machining on the Valve Guides on 09, 10, 11 Z's nothing about earlier models.

RFZ

warrantys are great....parts fail, unfortunately it was yours....new motor and your back in business....

lucxy

Seems like mine (09 z06) had the same problem. Low oil pressure 5-8psi at idle and main bearing failure.

PlanetZoom

Sorry to hear that but really great you have warranty.

I take it that it's the powertrain warranty that's covering it (not an extended)?

b4i4getit

Latest information from Carlisle on 09,10,11 models. Where is that link ?