C7 engine failers
Thread Starter
Instructor
Joined: Dec 2014
Posts: 110
Likes: 4
C7 engine failers
I have noticed that quite a few c7 have had engine failers after supercharging... My friends 2014 stingray failed the day after picking his car up from the shop after having a supercharger installed....with that being said is it the valvetrain that is the problem like the C6Z
Racer
Joined: May 2005
Posts: 362
Likes: 47
There is quite a bit of difference supercharging a DI engine and port injected. GM put thousands of hours on dyno. I think they learned a lot and the aftermarket is going to learn the hard way. Bottom line for me, I will not SC one of the DI engines except by OEM (Z06 or ZL1).
Avalon
Avalon
Tech Contributor
Joined: Oct 1999
Posts: 41,032
Likes: 9,789
From: Charlotte, NC (formerly Endicott, NY)
I have noticed that quite a few c7 have had engine failers after supercharging... My friends 2014 stingray failed the day after picking his car up from the shop after having a supercharger installed....with that being said is it the valvetrain that is the problem like the C6Z
Bill
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
More so than just having direct injection, the E92 ECM is a real mother. The combination of the two are really screwing up tuners who were/are really very good with port injected airflow based cars.
Even two to three years in, there is still a learning curve for many. If you think about it, the percentage of owners that heavily modify their cars in the first year, especially the first model year is drastically different than someone who buys a used vehicle of the previous generation with tech that is similar or the same as cars that have been out for 20 years.
Even two to three years in, there is still a learning curve for many. If you think about it, the percentage of owners that heavily modify their cars in the first year, especially the first model year is drastically different than someone who buys a used vehicle of the previous generation with tech that is similar or the same as cars that have been out for 20 years.
Le Mans Master
Joined: Feb 2002
Posts: 9,883
Likes: 518
From: Bergen County NJ
More so than just having direct injection, the E92 ECM is a real mother. The combination of the two are really screwing up tuners who were/are really very good with port injected airflow based cars.
Even two to three years in, there is still a learning curve for many. If you think about it, the percentage of owners that heavily modify their cars in the first year, especially the first model year is drastically different than someone who buys a used vehicle of the previous generation with tech that is similar or the same as cars that have been out for 20 years.
Even two to three years in, there is still a learning curve for many. If you think about it, the percentage of owners that heavily modify their cars in the first year, especially the first model year is drastically different than someone who buys a used vehicle of the previous generation with tech that is similar or the same as cars that have been out for 20 years.
I plan to eventually do the vengence drop in forged pistons and hope my car stays together for a long time. I am at 610rwhp now with meth and even after the pistons just plan to turn up the boost a little and do a blower cam. Looking to stay around 700rwhp or just under.
Last edited by thegame; Jun 22, 2016 at 01:43 PM.
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
The ECM, TCM, BCM, CCM, etc are very integrated so I would not go to an LSx.
I would also not put in a stock LTx if it is a non-warranty situation, go with a built motor.
Personally, if I were ever in the situation, I would leave the fuel system all stock and just add a new intake manifold with supplemental port injectors and a pump (maybe the CPR kit) to drive them. This is what Ford is going to, dual injection, and I think even the BRZ/FRS uses that as well.
I don't think LT4 stuff is needed and you can get away from meth and just have enough fuel to begin with.
I would also not put in a stock LTx if it is a non-warranty situation, go with a built motor.
Personally, if I were ever in the situation, I would leave the fuel system all stock and just add a new intake manifold with supplemental port injectors and a pump (maybe the CPR kit) to drive them. This is what Ford is going to, dual injection, and I think even the BRZ/FRS uses that as well.
I don't think LT4 stuff is needed and you can get away from meth and just have enough fuel to begin with.
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Melting Slicks
Joined: Jan 2010
Posts: 2,205
Likes: 67
From: Cumming GA
I personally know a lot a large number of people with modified C7s and not seeing failures. I think it has more to do with the shop and tuner than the car. The biggest frustration is that an LTX block is slow to market. Supposedly they went straight from GM to the race teams and no eta.
