Shop dropped an exhaust valve, who's fault?
08-13-2012, 01:04 AM
#1
2nd Gear
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Shop dropped an exhaust valve, who's fault?
I have a 09' Z06 with headers, Stage 3 cams and CAI that was done 2 yrs ago. Ran fine. Took it back to the same shop to install new cat back system and Fast intake and a re-tune.
Got a call today that while on the dyno it dropped an exhaust valve. They are not going to cover it because it's a stock part they never replaced so not their part to cover.
Just wondering are these motors proned to this or could this be a case of just bad tuning on the shops end.
So which direction would you go now? Who pays for what? Who's responsible for what? What kind of compensation would you ask for?
Then what to do with the car?
Crate motor? Short block with aftermarket heads?
It's just a dinner car, not a track car.
Got a call today that while on the dyno it dropped an exhaust valve. They are not going to cover it because it's a stock part they never replaced so not their part to cover.
Just wondering are these motors proned to this or could this be a case of just bad tuning on the shops end.
So which direction would you go now? Who pays for what? Who's responsible for what? What kind of compensation would you ask for?
Then what to do with the car?
Crate motor? Short block with aftermarket heads?
It's just a dinner car, not a track car.
08-13-2012, 01:07 AM
#2
Melting Slicks
I have a 09' Z06 with headers, Stage 3 cams and CAI that was done 2 yrs ago. Ran fine. Took it back to the same shop to install new cat back system and Fast intake and a re-tune.
Got a call today that while on the dyno it dropped an exhaust valve. They are not going to cover it because it's a stock part they never replaced so not their part to cover.
Just wondering are these motors proned to this or could this be a case of just bad tuning on the shops end.
So which direction would you go now? Who pays for what? Who's responsible for what? What kind of compensation would you ask for?
Then what to do with the car?
Crate motor? Short block with aftermarket heads?
It's just a dinner car, not a track car.
Got a call today that while on the dyno it dropped an exhaust valve. They are not going to cover it because it's a stock part they never replaced so not their part to cover.
Just wondering are these motors proned to this or could this be a case of just bad tuning on the shops end.
So which direction would you go now? Who pays for what? Who's responsible for what? What kind of compensation would you ask for?
Then what to do with the car?
Crate motor? Short block with aftermarket heads?
It's just a dinner car, not a track car.
08-13-2012, 01:27 AM
#4
Race Director
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C6 of Year Finalist (performance mods) 2019
Wonder if they'd say the same thing if they drove it into a wall. Oh, stock body we didn't supply, so sorry.
Hope you get it worked out. Kinda touchy, but they should have some type of insurance that covers customer's cars in their possession. Do you have a lawyer friend for advice?
Replace? You could do a LS3 dry sump for a lot less $ and still have the dinner car. The LS7 FRCs will fit.
Hope you get it worked out. Kinda touchy, but they should have some type of insurance that covers customer's cars in their possession. Do you have a lawyer friend for advice?
Replace? You could do a LS3 dry sump for a lot less $ and still have the dinner car. The LS7 FRCs will fit.
08-13-2012, 02:26 AM
#6
It obviously was the tune; doesn't take a rocket scientist to figure that out. I'm not an expert on these engines to comment on solutions, but the shop is definitely liable... according to your input. You could go to small-claims court if fix is less than 6 grand or so (check with your county). You can also report them to the BBB. Good luck man.
08-13-2012, 03:36 AM
#7
Le Mans Master
It obviously was the tune; doesn't take a rocket scientist to figure that out. I'm not an expert on these engines to comment on solutions, but the shop is definitely liable... according to your input. You could go to small-claims court if fix is less than 6 grand or so (check with your county). You can also report them to the BBB. Good luck man.
An LS7 with a tune and cam is number one (in a bad way) on the list of modified blown engines.
Which shop is it?
If you are just going to dinner the 505hp stock configuration will probably be your best route.
08-13-2012, 04:05 AM
#9
Le Mans Master
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Not the stock cam. Could the cam be part of the cause (higher lift) or did the new calibration increase the fuel shut off rpm? If so, maybe these things contributed to the failure.
Last edited by calemasters; 08-13-2012 at 04:11 AM.
08-13-2012, 06:36 AM
#10
Safety Car
Pls, motor fails while in their possession on a dyno, this isn't the same as driving it and getting into a wreck. I've never had a car on a dyno where I didn't sign away my rights just in case something like this happens.
The shop didn't drop ****, your motor failed, try posting this in the Z06 section and find out how many have had the same problem.
You play, you pay, quit trying to blame others ....
2 posts ........ ?
The shop didn't drop ****, your motor failed, try posting this in the Z06 section and find out how many have had the same problem.
You play, you pay, quit trying to blame others ....
2 posts ........ ?
08-13-2012, 06:40 AM
#11
Safety Car
It obviously was the tune; doesn't take a rocket scientist to figure that out. I'm not an expert on these engines to comment on solutions, but the shop is definitely liable... according to your input. You could go to small-claims court if fix is less than 6 grand or so (check with your county). You can also report them to the BBB. Good luck man.
A rebuilt/new LS7 is closer to $15K
Go over to the Z06 section and start reading about the engine failures, you'll find your diagnosis is off
08-13-2012, 07:06 AM
#12
Team Owner
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St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
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Pls, motor fails while in their possession on a dyno, this isn't the same as driving it and getting into a wreck. I've never had a car on a dyno where I didn't sign away my rights just in case something like this happens.
The shop didn't drop ****, your motor failed, try posting this in the Z06 section and find out how many have had the same problem.
You play, you pay, quit trying to blame others ....
2 posts ........ ?
The shop didn't drop ****, your motor failed, try posting this in the Z06 section and find out how many have had the same problem.
You play, you pay, quit trying to blame others ....
2 posts ........ ?
You said it, I was thinking it ................... 
08-13-2012, 07:49 AM
#15
Team Owner
08-13-2012, 08:02 AM
#16
Drifting
Is this the same shop that installed the headers, Stage 3 cams and CAI? Did they recommend different valves? If not, I wouldn't do business with them any more. It's not like you missed a shift at the drag strip.
08-13-2012, 08:11 AM
#17
Le Mans Master
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St. Jude Donor '06-'08-'10-'11-'12-'13 '14-'15-'16-'17-'18-'19
You obviously haven't spent any time on the Z06 forum. LS7's are dropping valves. Not a lot but enough to raise some eyebrows. And no, the dyno operator is not at fault. As had been mentioned, you play, you pay. Sorry.
08-13-2012, 08:21 AM
#18
Safety Car
Pls, motor fails while in their possession on a dyno, this isn't the same as driving it and getting into a wreck. I've never had a car on a dyno where I didn't sign away my rights just in case something like this happens.
The shop didn't drop ****, your motor failed, try posting this in the Z06 section and find out how many have had the same problem.
You play, you pay, quit trying to blame others ....
2 posts ........ ?
The shop didn't drop ****, your motor failed, try posting this in the Z06 section and find out how many have had the same problem.
You play, you pay, quit trying to blame others ....
2 posts ........ ?
08-13-2012, 08:33 AM
#19
That is my question as well...
Did you sign a waiver ever or the first time 2 years ago? Did they make you sign another waiver this time around?
I'm sorry, but I do not feel that it's the performance shops fault. There are weekly post about LS7's failing...
Did you sign a waiver ever or the first time 2 years ago? Did they make you sign another waiver this time around?
I'm sorry, but I do not feel that it's the performance shops fault. There are weekly post about LS7's failing...
08-13-2012, 08:38 AM
#20
Drifting
Did springs and retainers come with the cam? What failed the spring or retainer? Most dropped valves are spring related and if it was after market springs you may get some help there. Comp had a bad batch of 918 springs a few years ago and helped some guys with repairs. Springs with a high lift cam have a short life anyway so they could just be tired and broke. Like me tired and broke.