Blown engine??? Post up
07-13-2015, 02:52 PM
#21
07-13-2015, 02:54 PM
#22
07-13-2015, 02:55 PM
#23
Scraping the splitter.
Was that the event where you were having cooling system issues and thought it might have been an air bubble in the system?
Sorry you had a failure.
S.
07-13-2015, 02:59 PM
#24
Racer
Yep you got it. I have been laying low while I get to the bottom of it. Will post a full report as soon as I get the car back and everything is conclusive.
07-13-2015, 03:04 PM
#25
Scraping the splitter.
07-13-2015, 04:17 PM
#28
Race Director
07-13-2015, 04:21 PM
#29
Melting Slicks
Well if it is 10 engines of 10,000 pretty low. .001 percent! Sounds like no worry unless of course you have unlucky and landed in the .001 and some of those 10 we don't
know but a few could have abused the car too much too early.
We know cars with 37 miles on the odo have been to the strip with all out passes at 37 miles. That one didn't fail yet.
These cars have coatings on the bearing's that needs a proper breakin for best results. The 500 mile break in oil is fine. Is not a issue.
There is no issue that I see so far. I do think the 1lt has oilling issues
the lt4 is better in my book
know but a few could have abused the car too much too early.
We know cars with 37 miles on the odo have been to the strip with all out passes at 37 miles. That one didn't fail yet.
These cars have coatings on the bearing's that needs a proper breakin for best results. The 500 mile break in oil is fine. Is not a issue.
There is no issue that I see so far. I do think the 1lt has oilling issues
the lt4 is better in my book
07-13-2015, 04:48 PM
#30
Scraping the splitter.
Interesting data about engine failure rates:
http://www.autoexpress.co.uk/car-new...#ixzz2IhIaAMyJ
http://www.warrantydirect.co.uk/press269.html
It's a few years old, but interesting data.
So take the rumor of 13 failed Z06 LT4's. Then multiply it by 5. It represents a ~.85% failure rate, or about 1 out of 119 cars. About the same as Mercedes-Benz, or #3 on that list. And it's a 650 hp high performance supercharged engine.
That should put in perspective how overblown and exaggerated the claims that the LT4 is a failure are. That being said I'm sorry for those who have had issues and think a list to document failures is a pretty solid idea.
S.
http://www.autoexpress.co.uk/car-new...#ixzz2IhIaAMyJ
http://www.warrantydirect.co.uk/press269.html
It's a few years old, but interesting data.
So take the rumor of 13 failed Z06 LT4's. Then multiply it by 5. It represents a ~.85% failure rate, or about 1 out of 119 cars. About the same as Mercedes-Benz, or #3 on that list. And it's a 650 hp high performance supercharged engine.
That should put in perspective how overblown and exaggerated the claims that the LT4 is a failure are. That being said I'm sorry for those who have had issues and think a list to document failures is a pretty solid idea.
S.
07-13-2015, 07:50 PM
#32
Le Mans Master
Question: How many Z06 owners don't post to this Forum? If that was known the failure rate would be more accurate. Possible failures may never be reported to this Forum. GM sure as Hell wouldn't release any numbers. 
07-13-2015, 08:07 PM
#33
Maybe this thread should identify the "individual(s)" who built the blown motors. Who knows, we could have a "saboteur" in our midst (probably really works for Dodge). Best
The question regarding who built the blown engines has not been answered. Of the supposed 13, so far I see 2 on this post, both built by an individual. The most recent blown which was driven by the press also appear to have been a Z07 thus again built by an individual. I too would opt for an automated build, not only for engines, but paint etc.
The question regarding who built the blown engines has not been answered. Of the supposed 13, so far I see 2 on this post, both built by an individual. The most recent blown which was driven by the press also appear to have been a Z07 thus again built by an individual. I too would opt for an automated build, not only for engines, but paint etc.
07-14-2015, 12:05 PM
#34
Burning Brakes
There is little difference between the production methods for the hand built engines and the production ones other than where they are built and a few assembly details. In most cases they use identical tooling. If the so called production assemblies make any increased use of automation that would tend to make them a little less likely to have build issues. Robots don't make mistakes like humans do.
Bill
Bill
on automation enhancing quality and how there is probably little difference in the build methods.I toured the Wixom plant in 2006 and saw some hand-built LS7's. Everything was recorded on a build down to the torque for every bolt. All data acquired is automated from the tools used which are all connected to their network. A book (thick) accompanies the packaged engine when completed. I left with a strong impression that any failures would be from parts that had imperfections such as the valve train issues on a few C6 Z06's.
My point being that whether hand-built or robotic, it's all automated and tracked beyond what I ever imagined.
Parts fail and warranties cover them. Sorry to hear about the engines that have failed and I hope everyone who has experienced this gets back to the fun asap. I haven't had an engine failure yet but the issues I've had on the GM vehicles I've had, including 4 Vettes purchased new, have been taken care of. Once I had to wait a month for the completion of the warranty work on my C6 Z06 but so far GM has never left me to twist in the wind.
07-15-2015, 10:49 AM
#36
Burning Brakes
After seeing the failed engines that were built "by hand" I am not really surprised. Mine was built by some chic in BG---hope she was having a good day and it was not built on a Friday! A marketing gimmick that I do not buy into--may fool some of the older drivers who feel that they are getting a better engine by gum! That may have been the case in 1979 but not now.
In my world aerospace "by hand" means problems... Seen it for too many years.
In my world aerospace "by hand" means problems... Seen it for too many years.
Last edited by Busa Dave; 07-15-2015 at 10:52 AM.
07-15-2015, 02:03 PM
#37
In the past when GM has done this, the engines got different RPO codes. IE the LSA in the CTS-V and Camaro ZL1 vs. the LS9 in the ZR1. This time GM is saying LT4 by RPO code will be in the CTS-V.
07-16-2015, 04:09 PM
#39
Pro
It happens to all automakers, it is a mechanical engine... Here is a nice little nugget from Porsche for example... Yeah this is happening...
http://blog.caranddriver.com/some-po...engines-again/
Notice it says "Again".
Does not sway my opinion of my Z06 at all. Fantastic car!
http://blog.caranddriver.com/some-po...engines-again/
Notice it says "Again".
Does not sway my opinion of my Z06 at all. Fantastic car!
07-16-2015, 04:47 PM
#40
It happens to all automakers, it is a mechanical engine... Here is a nice little nugget from Porsche for example... Yeah this is happening...
http://blog.caranddriver.com/some-po...engines-again/
Notice it says "Again".
Does not sway my opinion of my Z06 at all. Fantastic car!
http://blog.caranddriver.com/some-po...engines-again/
Notice it says "Again".
Does not sway my opinion of my Z06 at all. Fantastic car!
