I agree 100%. It had to have been extremely hot in there to do that to the head. Did you log air/fuel by chance??
TFS 215 Head MELTED!!!! WTF???
I think its a combo of all of your suggestions. Next time the stand alone is getting c16! The tune will be checked out just to make sure. Also I was just about to re-tq the head bolts before this happend. But this time everything is getting re-tqed a few times just to ensure that everything is perfect!!! Thank all you guys for the info.
Well ... We have run more comp. and way more gas on the same TFS heads with no problems at all. With that amount of nitrous I don't see the need for O-Ringing either. We have run .051 Cometics 11.5:1 comp. and a 400 shot on a LS2 with ARP Bolts on the heads with no problems at all !!!
Teching In
Joined: Jun 2024
Posts: 8
Likes: 4
I know this is a really old thread but I just ran into the exact end result with the same parts with the difference being mine is boosted. Anybody else experience this and have a known solution? Mine is also not showing any signs of knock. I have the log of the failure and it does not show signs of being lean. (.8 to .81 lambda) I'm gonna chase to theories, reinstall, and hope for the best unless you guys know of a permanent solution.
I'm gonna look very closely at the size of the bore bevel/chamfer at the top and see if the gasket is over hanging either the bore or combustion chamber at any point. I'm gonna have my injectors checked, cleaned, then re-checked in hopes of finding a semi plugged injector for cylinder number 5 which was the failure point on mine.
What would you guys do?
I'm gonna look very closely at the size of the bore bevel/chamfer at the top and see if the gasket is over hanging either the bore or combustion chamber at any point. I'm gonna have my injectors checked, cleaned, then re-checked in hopes of finding a semi plugged injector for cylinder number 5 which was the failure point on mine.
What would you guys do?
Last edited by ac house of go fast; Jun 17, 2024 at 08:31 AM.
I know this is a really old thread but I just ran into the exact end result with the same parts with the difference being mine is boosted. Anybody else experience this and have a known solution? Mine is also not showing any signs of knock. I have the log of the failure and it does not show signs of being lean. (.8 to .81 lambda) I'm gonna chase to theories, reinstall, and hope for the best unless you guys know of a permanent solution.
I'm gonna look very closely at the size of the bore bevel/chamfer at the top and see if the gasket is over hanging either the bore or combustion chamber at any point. I'm gonna have my injectors checked, cleaned, then re-checked in hopes of finding a semi plugged injector for cylinder number 5 which was the failure point on mine.
What would you guys do?
I'm gonna look very closely at the size of the bore bevel/chamfer at the top and see if the gasket is over hanging either the bore or combustion chamber at any point. I'm gonna have my injectors checked, cleaned, then re-checked in hopes of finding a semi plugged injector for cylinder number 5 which was the failure point on mine.
What would you guys do?
Since it was never asked all those years ago when this thread was started, I have to wonder what rpm people were trying to spray at. At 5000rpm, a 200 shot is no big deal, but at 2000 rpm a sudden spike in torque of over 500lbft will burn some **** down.
Teching In
Joined: Jun 2024
Posts: 8
Likes: 4
I know, still an old thread but I would like to update my findings. Turns out I did find evidence of knock when I started cleaning the deck surface. The evidence (besides the obvious whole in the head) was just above the top ring stopping point on the bore. It was so slight I overlooked it with a bore scope and barely could see it with the head off. The true problem I believe was the head gasket was the exact size of the widest part of the combustion chamber. Obviously I missed it during preliminary inspection steps of the heads/parts. I spoke with Cometic and they were able to provide the xring? gasket that set the gasket back an additional .035" from the combustion chamber largest point.
Repaired/welded the head and only had to mill .003", reinstalled it and now it lives on pump E85. All good for the last 4,000 miles.
Repaired/welded the head and only had to mill .003", reinstalled it and now it lives on pump E85. All good for the last 4,000 miles.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
