Looks like I lost #7 piston

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05-13-2008, 09:24 AM

#71

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Quote:

Originally Posted by trever1t

I was really expecting to see pieces of the piston...

Atleast your honest bill...i was thinking lean detonation on the piston and messed up head

Dustin

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05-13-2008, 09:25 AM

#72

KySilverado

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Quote:

Originally Posted by KySilverado

I'm betting this won't be the normal broken ring land you see on the stockers. I don't like the look of the #7 plug. All the others look okay. Wondering if you didn't seize/break a ring.

Quote:

Originally Posted by trever1t

I was really expecting to see pieces of the piston...

I wasn't. Not with forged pistons. Thats the insurance you buy with them.

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05-13-2008, 09:29 AM

#73

trever1t

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My experience is limited, I have seen pistons like those ^ on my Harley when I was running too much CR...a few times :-(

What is the fix?

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05-13-2008, 09:36 AM

#74

Wilde Racing

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Quote:

Originally Posted by trever1t

I was really expecting to see pieces of the piston...

Like I said the 2618 pistons don't break, they deform...

I'm with Ky, What was the piston to cylinder clearance set at?

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05-13-2008, 09:37 AM

#75

Wilde Racing

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depends on how deep, but the fix is not good, I think the cheapest of which would be a new block and one new piston....

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05-13-2008, 09:48 AM

#76

KySilverado

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Quote:

Originally Posted by Wilde Racing

depends on how deep, but the fix is not good, I think the cheapest of which would be a new block and one new piston....

Yeah sorry Chris. This is the worst you would expect to see with the cylinder wall damage.

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05-13-2008, 09:49 AM

#77

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Quote:

Originally Posted by KySilverado

Yeah sorry Chris. This is the worst you would expect to see with the cylinder wall damage.

so it kinda looks like something seized...or well started to!

Dustin

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05-13-2008, 09:59 AM

#78

KySilverado

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I would check clearances. The more I look at the pictures IMO, considering a top notch builder, I think the dang plug electrode caused all this. Broke off. Powdered up a bit, few bigger pieces got down into the rings, screwed them up and they rolled over. A nice piston ring, electrode sand paper.

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