Comp 918 failure caused #6 piston to disenegrate :(

581/588 the springs r supposed to be good to 600...

Damn dude! Sorry to hear the bad news! Makes me want to change out my springs, (PAC) but they have about 20k on them!

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Originally Posted by 06 4.8

Well my dad said take this negative and turn it into a positive..
l

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Wise old man!!!

difficulty is opportunity in disguise!

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Originally Posted by 06 4.8

Well I took off work yesterday to tear my motor apart and found the #6 exhaust valve spring broken, then once i got the head off I looked doen in the block and where a piston is supposed to be i found one chunk about the size of a chicken nugget the rest were so small they fell into the oil pan im assuming. When it happened it completely chewed up the head and ate the spark plug. looking down in the cylinder hole u can see that it chewed up the crank and the cylinder wall was demolished.

Well my dad said take this negative and turn it into a positive..
Hello reman longblock LQ9!!lol

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Were these the original design 26918s, or the recent, higher-rate 26918s?

All the chevrolet geared performance websites need stickies on comp 918s. After reading about the first ones I said no way am I gonna risk my motor. Patriot dual golds for me.

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Originally Posted by zeake

All the chevrolet geared performance websites need stickies on comp 918s. After reading about the first ones I said no way am I gonna risk my motor. Patriot dual golds for me.

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They've killed a few Hemi's too

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Originally Posted by Frenchy

They've killed a few Hemi's too

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so have i. lol

I've got comp duals on my heads.... I'm almost positive that I read that comp/pac are made by same company?