They mention debris found but no mention of replacing the oil cooler or even flushing the lines and cooler. Be ready for another engine...

 

I hope not. I’d like to think they are on their game. I just need it to last until the Z06 arrives, which should be by the end of the year.

 

Perhaps flushing the cooler and lines is part of the engine replacement procedure (it should be) so it isn't mentioned in the invoice.

 

That story is dissapointing from a quality perspective. The LS1 and LS6 could take abuse like no other all day long. Event after event they held together. The power output is a lot less, but it was good power for the time.

 

I find this part interesting: "Retrieved ECM calibrations and submitted to TACCVN. Calibrations were verified to be OEM."

I've never seen that on a work order before, but it does confirm dealerships check for tunes prior to a major warranty repair.

 

bobgolub@hotmail.com was this your C8 at VIR sharing the track with the various Caymans?


Looks like a well driven EB C8 with the High Wing, the first thought that crossed my mind was that it might have been yours.
Was your car still running the 18/19 245/305 setup?

 

ha ha. Yup. The guy who passes me was so excited. I don’t have the heart to tell him that I was running 7/10 because my check engine light was on and I had a 250 lb passenger who wanted me to slow down. That was the last session of the event and the engine was seconds from blowing. When I pulled into the paddock after that session it went. And yes, same setup.

 

I don't think the problem is the engine, the ECU has alot of satety measures like Knoking, overheat and somany.
GM should have check the entire engine systems and not the engine only.

 

it wont due any good, the ECM/TCM/BCM dont have the ability to capture and store data. The codes when they trip store the data that was captured at the moment of the trip. Without live data that was captured we are all guessing.

Running on a track puts some extreme pressure on components, especially the engine. I am going to guess temps played a part, engine has some knock and cylinder temps crept on the affected cylinder. Eventually the cylinder temps caused the piston rings to butt up and broke the ring land. This is a pretty common failure on the LTx engines when they are pushed hard and cylinder temps and pressures get up really high.

Huge reason why to make sure if you are going to run on a race track, do like the OP did and have the track prep done to a "T". Also make sure to run 93 octane fuel, I cant tell you how many GM vehicles I have data logged on 91 octane on street use that show detonation/KR during normal street driving. Change the environment to a race track and I bet the data would show the culprit to be temp, fuel and or knock related.

OP if you have the PDR option you could always run the PDR and then use the Cosworth toolbox to see the data, just another layer of protection for you. The other option is you could get a laptop and buy the HP Tuners MPVI2 and use the HP Tuners Scanner App and data log the vehicle while on the track, again just another layer of data and protection for you in case of future issues.

 

I do use the toolbox. Unfortunately it shut down during the last session after 2 laps. Data I had looked OK.

there is an update. I got a call from the dealer that the car was ready one week after the repair was approved. I was scheduled to go to Watkins Glen in 5 days. I do have a backup car that I had just put new tires on, but I couldn’t resist taking the Vette, so I had to put the 1500 break in miles on it in 4 days. Not so easy. Anyway I did it and trailered it up there. Car seemed fine during break in. Right from the start there was a problem. After a few laps the engine was surging and not responding properly. I was getting service traction and e diff warnings. I came in and shut down and restarted and all seemed well. Drove around outside streets and all OK. Went out on the track again and problem returned, but now check engine light on, and scanner showed 0300 code which is multi cylinder misfires. The car is now back at the dealer.

 

Man you have been through it with this car....

I hope things start working out so you can get more enjoyment out of the car till your Z06 arrives!

Thanks
Andrew

 

3rd engine!

No way it's from the engine block. They have to replace the hole engine assembly, especially the dry sum system.

 

So it was just a loose spark plug wire not properly seated. Back in business.

 

Well then. A lot less hassle. Good for you.