!!!!!!!!!!!! Look !!!!!!!!!!!!!
Thread Starter
8th Gear
Joined: Nov 2005
Posts: 8
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!!!!!!!!!!!! Look !!!!!!!!!!!!!
!!!!!!!!!!!! LOOK !!!!!!!!!!!!!
Beware of the promise of more HP. My friend had his head & cam package for over two years. Drove it back & forth to Fla 3 or 4 times over 25000 miles he has put on it.
THEN he meets someone that tells him I can get 30 more HP out of your car with tuning.
I'm the best around. Well my friend drops off his car for a tune. Gets a call that the head gasket blew. Well after the car is sitting in the shop for a few months thousands of dollars later This happens. WHY can anyone tell me what happen. Tuner is blaming prior head & cam package. he needs help he wants answers. The shop where the car is now does not want to get involved just wants to repair the car.
Jeff
Beware of the promise of more HP. My friend had his head & cam package for over two years. Drove it back & forth to Fla 3 or 4 times over 25000 miles he has put on it.
THEN he meets someone that tells him I can get 30 more HP out of your car with tuning.
I'm the best around. Well my friend drops off his car for a tune. Gets a call that the head gasket blew. Well after the car is sitting in the shop for a few months thousands of dollars later This happens. WHY can anyone tell me what happen. Tuner is blaming prior head & cam package. he needs help he wants answers. The shop where the car is now does not want to get involved just wants to repair the car.
Jeff
Supporting Tuner
Joined: Sep 2004
Posts: 51,896
Likes: 39
From: ================== Houston, Texas www.englandgreen.com ================== Necessary Evil™ __________
CI 6-7-8-9-10 Veteran
St. Jude Donor '05-'06-'07-'08-'09-'10-'11-'12-'13-'14
Originally Posted by Z06Doug
I'm just wondering why this has to be posted in every section...
There must be a point somewhere - but I couldn't be bothered to figure out what it is....
Team Owner
Joined: Mar 2002
Posts: 47,647
Likes: 1
From: Queens, New York Life begins at 183 mph....
St. Jude Donor '08-'09
To me, it sounds like they probably did some hard pulls on a dyno, the head gasket blew and now he's screwed. Can't blame the shop who did the H & C package, even if he used an inferior gasket, since that was 25k miles ago. Can't blame the tuner, unless they actually changed something physically on the engine without his consent. I think you're friend is gonna have to get some more HP the old fashion way, with a new engine!! 
Its probably not that bad, can't tell from the pic.
Its probably not that bad, can't tell from the pic.
Racer
Joined: Sep 2005
Posts: 429
Likes: 0
From: lincoln nebraska
if im seeing this right, it looks like it pulled the ring land off. This happens from excessive pressure or heat in the combustion chamber. Have you sprayed this motor at all? Sometimes rings butt and pull the land right off. That isnt the case usually w/ OEM LS1 shortblocks but just checking. It very well may have detonated but the odd thing is the knock sensors should have picked that up LONG before it detonated bad enough to take a ring land out. What cylinder is this btw?
Dave
Dave
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Drifting
Joined: May 2003
Posts: 1,715
Likes: 1
From: cAshburn VA
That is definately a piece of piston missing, you can see the ring is still intact.
Since it is at TDC you can't tell if there is any damage or prolonged scarring on the cylinder wall. Doesnt really look like a valve strike, hmm...
There are alot of details missing here. Like what happened between "getting a call that the head gasket blew" and "after sitting at the shop for couple of months and several thousand dollars later". I am assuming that the head gasket or gaskets were replaced? Was the compression ratio bumped? Did he keep the new tune or revert back?
More details will help you get better answers, or at least possible answers.
Good Luck!
Since it is at TDC you can't tell if there is any damage or prolonged scarring on the cylinder wall. Doesnt really look like a valve strike, hmm...
There are alot of details missing here. Like what happened between "getting a call that the head gasket blew" and "after sitting at the shop for couple of months and several thousand dollars later". I am assuming that the head gasket or gaskets were replaced? Was the compression ratio bumped? Did he keep the new tune or revert back?
More details will help you get better answers, or at least possible answers.
Good Luck!
Le Mans Master
Joined: Sep 2001
Posts: 8,840
Likes: 43
From: State of Confusion.
Could he have tried to get the thirty horses by tuning it and leaned it out too much and burnt the piston? Aren't there certain cylinders that burn leaner anyway? Just a guess! Good Luck!
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
Funny how I responded to this thread earlier today (would have been the first response), but now I see it was deleted..
Gee, all I said was this piston failure was probably due to a lean tune, in an attempt to make "free HP". GM tuned these cars rich from the factory for a reason, not by accident.
Gee, all I said was this piston failure was probably due to a lean tune, in an attempt to make "free HP". GM tuned these cars rich from the factory for a reason, not by accident.
Racer
Joined: Sep 2005
Posts: 429
Likes: 0
From: lincoln nebraska
dan if that is a piece of piston missing you are certainly correct on a lean condition. But on a N/A motor to be that lean and not have the Knock sensors retard timing 10 deg (max) Id bet they really desensitized the knock sensors or perhaps shut them off completely to make even more HP. With that said though, someone really had to screw up to pull a ring land off a piston on a relatively mild N/A setup . I run 11.2:1 compression and 13.2-13.3 AFR w/o any knock or other problems. I also run a very tight quench (.033") cold so that might help but still someone really messed up that tune. If he was running fine up till he brought it in for the "tune" then he knows who to talk to. This guy has head studs too so im pretty sure there was no HG problems here.
Dave
Dave
Race Director
Joined: Mar 2001
Posts: 11,405
Likes: 26
From: Whippany NJ
CI 6-7-8-9 Veteran
St. Jude Donor '08-'09
NCM Sinkhole Donor
Originally Posted by Dan_the_C5_Man
Funny how I responded to this thread earlier today (would have been the first response), but now I see it was deleted..
Gee, all I said was this piston failure was probably due to a lean tune, in an attempt to make "free HP". GM tuned these cars rich from the factory for a reason, not by accident.
Gee, all I said was this piston failure was probably due to a lean tune, in an attempt to make "free HP". GM tuned these cars rich from the factory for a reason, not by accident.
The tuner sounds like hes a moron and leaned it way out there. Now he blames the tuner. "yeah...its the the head/cam package that caused it to blow. ...I know its been 25k reliable miles and it only blew once i touched it....but yeah...its the package. not my tune!" 
your friend just got bent over with no lube! 
Drifting
Joined: Oct 2004
Posts: 1,975
Likes: 9
From: "Philly" Pennsylvania
I responded to a post with this picture recently but the poster made a geographical reference and mentiond a business name, but you couldn't figure out where he was referring to and he didn't fill out his biographical information just like "fried rice". These posts are a waste of time.
Le Mans Master
Joined: Dec 1999
Posts: 5,169
Likes: 6
From: Greenville SC
Originally Posted by Alex1217
To me, it sounds like they probably did some hard pulls on a dyno, the head gasket blew and now he's screwed. Can't blame the shop who did the H & C package, even if he used an inferior gasket, since that was 25k miles ago. Can't blame the tuner, unless they actually changed something physically on the engine without his consent. I think you're friend is gonna have to get some more HP the old fashion way, with a new engine!!
Its probably not that bad, can't tell from the pic.
Its probably not that bad, can't tell from the pic.
I can tell that's a broken piston from the picture!!!
I don't see any signs that the head gasket blew.
