Crack a Diamond piston, pics inside....

[WSLN 6]

Pfff...who needs progress anyway. All comments welcome.

Same cylinder that torched the GN1 head a bit. (#2)

 

[bison]

Looks like the same spot that another member had failure. The piston was machined too thin in that area and prone to failure.

 

[DailyDrifter]

Could be the top ring gap.

 

[WSLN 6]

All rings looked normal, was .020 gap.

 

[bison]

http://www.turbobuick.com/forums/engine-tech/308688-broken-diamond-piston-pics-why.html

 

[WSLN 6]

Ya I saw those. I'm sure that this piston would end up looking like the one with the window in it if I ran it again.
Maybe it is time to order up som CP's or something.

 

[Grumpy]

Maybe it is time to order up som CP's or something.

"Maybe" ?? any idea how old the pistons are ???

 

[WSLN 6]

They are 2 years old, have about 2000 miles on them.

 

[tta1240]

i just put a set of diamonds in my car,i hope this does not happen to me

 

[Mike Licht]

Call Diamond ask for Nick let him take a look 586 792 6620

 

[Grumpy]

They are 2 years old, have about 2000 miles on them.

well like Mike said give Diamond a call. I just looked at my slip an we got a set in 2004. Has about 30k on the motor. 15k was buy Melissa that we beat the hell out of it.

 

[dr_frankenstein]

how did you determine it had a crack? random compression test?

A.j.

 

[WSLN 6]

Was just cleaning them up to assemble the short block...

 

[Cme2fly]

They are 2 years old, have about 2000 miles on them.

Any news on the pistons? Please update this thread if you find out anything through Diamond.

 

[84BuickGNYorkPA]

Looks like a defect in the piston, not a crack, just my opinion.... I'm sure you would have seen that though, during the initial assembly process.

Chuck

 

[WSLN 6]

Well defect or crack it's unuseable. It pushed the top of the piston crown up, so something must have happened when I blew the head gasket. No matter now I guess, hunting down some JE's as we speak. First race of the year is on Sunday, I may not be ready.....lol

 

[87we410877]

Yup that was my link in there with the other diamond piston broken. From what ive herd, when you call diamond they tell you they have a new design and will sell them to you. So basically you become diamonds trial and error department at your own out of pocket cost.

I think im going to go with CP's.