OMG My Engine is Toast

[ikessky]

How do dyno sheets prove that the engine was properly tuned? Show me the sensor readings and data logging and then maybe someone here will believe you.

I'm done with you and this thread. It is obvious that you did everything right and that this issue is someone elses fault. This board should be paying you for being a pioneer in the 660 world.

[zofo61]

Well I have Dyno sheets to proove otherwise! What do you have?

I have a car that runs...thats what I have!

Post those dyno graphs that show the fuel trims in boost with a 1 bar map...............

and the MAF table that calculates the sliding scale for fuel in boost .

Show me that

[john_V63400]

OK......I can do that guys
I need to get my sheets sent to me from method MotorWorks..Fresno, then I will upload them.

i apreciate everyones concern, help, knowledge, opionions, I really do. But my engine didnt break because of tuning.

[ikessky]

Maybe it didn't break solely because of tuning, but it probably had a factor in it.

I hope you find the root cause of what happened here. And I was serious that I wouldn't go back to your mechanic.

[bszopi]

I personally don't think the guys dyno-tuning your engine knew what they were doing...

http://www.60degreev6.com/showpost.p...4&postcount=64

When I dynoed my car they didnt believe me when i told them Im missing my MAF cause they said it reads its air from the MAP.
They said usually cars only have 1 source of air volume reading.

http://www.60degreev6.com/showpost.p...0&postcount=58

How do you VE tune a boosted app with a 1 bar MAP?

You don't because you can't.

[sprucegagt]

Looks like someone had a nasty case of KNOCK. Yes I said KNOCK because dyno tuning in one gear does not simulate WOT while shifting. We all know if you have enough KNOCK, then the weak point in your valve train will be found the hard way. In your case it was the cam pin. Grand Ams are bad for having some high KR readings when shifting at WOT. Proper street tuning would of fixed this issue. Got any datalogs from your dyno tuning? I'd love to see the LTFT readings.

[john_V63400]

I personally don't think the guys dyno-tuning your engine knew what they were doing...

http://www.60degreev6.com/showpost.p...4&postcount=64



http://www.60degreev6.com/showpost.p...0&postcount=58

that was my bad I misunderstood him

[john_V63400]

Looks like someone had a nasty case of KNOCK. Yes I said KNOCK because dyno tuning in one gear does not simulate WOT while shifting. We all know if you have enough KNOCK, then the weak point in your valve train will be found the hard way. In your case it was the cam pin. Grand Ams are bad for having some high KR readings when shifting at WOT. Proper street tuning would of fixed this issue. Got any datalogs from your dyno tuning? I'd love to see the LTFT readings.

Possibly, but what would make the cam gear just stip out of place?

[sprucegagt]

Harmonics

[El_Diablo]

or a shock load....

[Superdave]

those look like stock pistons to me...


Oh the mystery of the flipped valve..

In for pics of the heads, Combustion chamber side. If that valve flipped in the cyl that way, the head should be completely shattered.

[kflo 93 gt]

That's what I'm thinking Dave, that head has to be totally dominated...

[El_Diablo]

i think we need more pix

[john_V63400]

The head is shattered, Immean theheads were owned.

Those for the last time are forged Arias dishtop pistons.

[zofo61]

i think we need more pix

^^X2

I want to see the head that valve came from................