Seer's 2012 GT500

stkjock

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yup

IMAG0298.jpg
 

Seer

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It was way crushed before, with 28.5's in the back and BMR Springs.
 

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I know. Wheels weren't my first choice. But I don't.mind them.

I'm.going to call forgestar on Monday and custom.build another set of 20s. I hear they do two piece forged on custom orders.
 

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Replaced the Hushpowers with Borla S-Types. Not bad.
 

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Any more insight on your potential problem?

It happened a second time. Had the plugs looked at from a friend of a friend who is an engine builder for a NHRA funny car team.

It is not a piston making contact with the plug. Here is our theory:

One of the original plugs were defective and cracked under some detonation.
Ceramic from plug rattled around in the cylinder and basically acted like little pieces of buck shot.
Over time the ceramic got smaller and smaller.

The car is not exhibiting any behavior of a broken piston, stretched rod bolt, spun bearing etc. Basically the car feels perfectly fine once a new set of plugs go back in it. I toned down 93 tune to 18* of timing and 17 psi and it still popped a plug. Hence why we feel its foreign material in there.

So, I am doing another compression test today, and using my new color high res borescope that arrived today to see what/if any real damage. Then I am going to stick a small hose down the plug holes and suck out anything in there with my shop vac. After I stick a coat hanger down there with a rag taped to the end and clean up whats in there first.
 

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that sounds a bit risky

Of losing the rag? I was going to stick a hanger down there with tape facing out to pick up some of the debris. But I figured rigging up a shop vac with a skinny hose would work better.
 

stkjock

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yea, losing the rag or leaving a part of it in the cylinder. having the hanger "poke out" and scraping the bore? IDK - spit balling here
 

Seer

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yea, losing the rag or leaving a part of it in the cylinder. having the hanger "poke out" and scraping the bore? IDK - spit balling here

Hanger, long stick, straw etc.
 

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