Cylinder No. 7 Disaster
Cylinder No. 7 Disaster First run at track after FAST install and this is what happened. It's really hard to see it but the cylinder wall is also split. Unbelievable. How does this happen?
Here's some more pics. The only thing I see with the head is a couple of nicks on one of the valves from the pieces of broken piston bouncing around in the chamber. Also, the two small pieces of piston were found inside the intake. How the hell did that happen?
Here's some more pics. The only thing I see with the head is a couple of nicks on one of the valves from the pieces of broken piston bouncing around in the chamber. Also, the two small pieces of piston were found inside the intake. How the hell did that happen?
Teching In
Joined: Feb 2009
Posts: 29
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Did you clean the chamber and piston to inspect it? or this was the way it look when you opened it?
If this was the way it looked when opened, it looks like a lean condition.
How did the plug looked? Maybe the injector went out.
If this was the way it looked when opened, it looks like a lean condition.
How did the plug looked? Maybe the injector went out.
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Usually those pistons do that because of ring butting due to high pressure/temperature in the cylinder. I know that #7 cylinder has distribution issues with the factory intake but you said you are running the fast intake. Did you check the injector o-ring on that cyl? You may have had a vacuum leak on that hole. Oddly enough I have a piston on the bench next to me that looks identical to yours. It was caused by a clogged injector.
Usually those pistons do that because of ring butting due to high pressure/temperature in the cylinder. I know that #7 cylinder has distribution issues with the factory intake but you said you are running the fast intake. Did you check the injector o-ring on that cyl? You may have had a vacuum leak on that hole. Oddly enough I have a piston on the bench next to me that looks identical to yours. It was caused by a clogged injector.
Bad tune would have likely gotten more than 1 cyl.
"Distribution problems"?
Looks to be a topic in this thread:
https://ls1tech.com/forums/generatio...inder-7-a.html
"Distribution problems"?
Looks to be a topic in this thread:
https://ls1tech.com/forums/generatio...inder-7-a.html
Last edited by Old Geezer; May 20, 2009 at 03:04 PM.
i think he's saying it could have run rich or it could have run lean?
i'm thinking cooling issues (coolant lines) have something to do with the #7 or at least contribute to.
on a side note: my level 6 brute (bobdoless) savagely RAPED your level 12. you couldn't even take my dog out.
i'm thinking cooling issues (coolant lines) have something to do with the #7 or at least contribute to.
on a side note: my level 6 brute (bobdoless) savagely RAPED your level 12. you couldn't even take my dog out.
Bad tune would have likely gotten more than 1 cyl.
"Distribution problems"?
Looks to be a topic in this thread:
https://ls1tech.com/forums/generatio...inder-7-a.html
"Distribution problems"?
Looks to be a topic in this thread:
https://ls1tech.com/forums/generatio...inder-7-a.html
