Blown engine on the dyno after supercharger install
#21
Le Mans Master
Get you a new tuner dude.
#22
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Burnt piston in #7. Logs show that it went rich on the second to last pull due to the ecm pulling timing due to the intake temps rising. This caused a rich condition in the cylinder. Bearing damage as well. I'll take a look back at Theta's earlier post to gain a little more insight. Going to go forward with a forged smallblock and cam since the engine will be torn down. I know you run the risk of damage when you do these sort of things, just thought that I was playing it safe. You live and learn I guess.
#23
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St. Jude Donor '15
Too rich can, supposedly, do some pretty bad cylinder washing on DI engines
I'm not sure how that'd cause bearing issues though. That sounds more like knock to me
This is the risk we all taking adding superchargers, etc. It's not common for this to happen, and may or may not be the tuners fault.. but ultimately all you can do is move on and up
Just be sure whoever tunes it really knows what they're doing. I wouldn't use a remote tuner for something like this personally. If you were closer I'd check it out for you but little bit far from NC!
I'm not sure how that'd cause bearing issues though. That sounds more like knock to me
This is the risk we all taking adding superchargers, etc. It's not common for this to happen, and may or may not be the tuners fault.. but ultimately all you can do is move on and up
Just be sure whoever tunes it really knows what they're doing. I wouldn't use a remote tuner for something like this personally. If you were closer I'd check it out for you but little bit far from NC!
Last edited by schpenxel; 01-28-2017 at 07:04 PM.
#24
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Thanks for all of the feedback and concern, I really appreciate it. For those interested the car was putting down 528 rwhp before it failed. I'm not interested in giving out names as I do not believe that it was ultimately the installation that was the problem. Most likely the tune or a flaw in some manufactured component, but then again I am completely naive with all of this. From what I have read I was under the impression that fueling and component damage wasn't to be expected for anything under 600 rwhp.
#25
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St. Jude Donor '15
It's highly unusual, which is why everyone keeps mentioning the tune
#26
Safety Car
Who tuned it?
#27
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I can agree on the OP on the blower install but who done the tune on the car. Crap man If me common sense should tell you if it had a good and correct tune on the car I don't see this happen to the motor at all at that level of power. Guys in here with all stock parts with 700 plus rwhp. So I would put money on the tuner on this. Robert
#28
Safety Car
#31
Safety Car
Remote tunes make no sense especially when you have Futral and Asylum local
#32
Another important factor to consider is that some early 14's had a manufacturing defect with the machining of the bearings, I believe. There were some engines that blew even stock. When Theta used to post here, he discussed the issue in detail, as his car was one of the affected ones.
That was a thrust bearing issue from what I recall
#33
Le Mans Master
Too rich can, supposedly, do some pretty bad cylinder washing on DI engines
I'm not sure how that'd cause bearing issues though. That sounds more like knock to me
This is the risk we all taking adding superchargers, etc. It's not common for this to happen, and may or may not be the tuners fault.. but ultimately all you can do is move on and up
Just be sure whoever tunes it really knows what they're doing. I wouldn't use a remote tuner for something like this personally. If you were closer I'd check it out for you but little bit far from NC!
I'm not sure how that'd cause bearing issues though. That sounds more like knock to me
This is the risk we all taking adding superchargers, etc. It's not common for this to happen, and may or may not be the tuners fault.. but ultimately all you can do is move on and up
Just be sure whoever tunes it really knows what they're doing. I wouldn't use a remote tuner for something like this personally. If you were closer I'd check it out for you but little bit far from NC!
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The Rock1 (02-27-2017)
#34
Team Owner
If you think you are kicking yourself now, wait until you pay someone to do the work again and could have a similar but much more expensive problem.
There are only 2 options:
1. There was a defective part in your engine from the day it was built and the added stress caused it to fail.
2. Installer/Tuner screwed up something.
I've been down this road before unless you get an answer that makes complete sense go somewhere else before spending another dime.
There are only 2 options:
1. There was a defective part in your engine from the day it was built and the added stress caused it to fail.
2. Installer/Tuner screwed up something.
I've been down this road before unless you get an answer that makes complete sense go somewhere else before spending another dime.
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VAVetteC7 (02-04-2017)
#35
I'm Batman..
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After a major failure like this, and it being 99% likely due to a tune issue, its time to start telling yourself that shipping the car to a WELL known C7 tuner is the right play. No remote tunes when meth and boost are as involved as they should be as they don't see all the logs that a real "hands on" dyno tune provides..
Ant
Ant
Last edited by FYREANT; 01-29-2017 at 10:33 AM.
#36
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If you think you are kicking yourself now, wait until you pay someone to do the work again and could have a similar but much more expensive problem.
There are only 2 options:
1. There was a defective part in your engine from the day it was built and the added stress caused it to fail.
2. Installer/Tuner screwed up something.
I've been down this road before unless you get an answer that makes complete sense go somewhere else before spending another dime.
There are only 2 options:
1. There was a defective part in your engine from the day it was built and the added stress caused it to fail.
2. Installer/Tuner screwed up something.
I've been down this road before unless you get an answer that makes complete sense go somewhere else before spending another dime.
I will are would put money on number 2 in this case.
#37
Thanks for the words of encouragement. The car had only 9k miles on it when this happened. Unfortunately there was no dyno information on the engine before the install. The install was done by a very competent individual that has worked in this business for a while and now does work on the side. Tune was done remotely after the install.
I'll post up more information when I get it.
I'll post up more information when I get it.
#38
Team Owner
After a major failure like this, and it being 99% likely due to a tune issue, its time to start telling yourself that shipping the car to a WELL known C7 tuner is the right play. No remote tunes when meth and boost are as involved as they should be as they don't see all the logs that a real "hands on" dyno tune provides..
Ant
Ant
You were in the situation where you had to load the tune and hope for the best, not someone there watching it, understanding what was going on and could have noticed a problem before it went BOOM.
#39
All in the tune
and for remote tuning pat g did both of my c7s remotely and 0 issues and im up around 700 rwhp AND RAN 10.3@140 AND NEVER EVER USED A DYNO
pat to me is one of the best if not the best
and for remote tuning pat g did both of my c7s remotely and 0 issues and im up around 700 rwhp AND RAN 10.3@140 AND NEVER EVER USED A DYNO
pat to me is one of the best if not the best
Last edited by blown81bu; 01-29-2017 at 08:11 PM.
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vetteandv (01-29-2017)
#40
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On this car here by his time slip has to be close to that 700 rwhp # to run a 10.3 and 140 1/4 mile runs. This car for all stock short block sounds like one wild set up. My point is just this. Tune that has been put into the car.
Plus don't sound like this tuner knows much to blow it in the 5,k RPM sound like it is lean with to much timing in it.
Don't get me wrong here I couldn't tune a fart here in these cars. But sure have had 2 bad azz set up's and had both of them to a least more than a number of tuners that didn't really know much of what they were doing at all. Not much more than this guy that done this to the OP cars. Robert
Last edited by robert miller; 01-29-2017 at 08:24 PM.