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H22A Forged Piston DYNO RESULTS update 8-17-07

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Old 08-14-2007, 05:24 AM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

Originally Posted by c0mpl3x
i love the noobs that go 'zomg, i got my block bored to 93mm and i got 93mm pistons after i got the block bored, is it okay if the pistons wiggle?' in threads.
Well there was nothin like that happening here!
learn to ------- buy pistons, take them AND the block to the machine shop, then have them bore the block to the pistons, one cylinder at a time.
Well I dug deep into the friends with friend at the local strip tonight. I took off work and went to a friends house Billy Price that has the same pistons with different compression, same sleeves, same motor, same bearing brand, same block builder and assembler with the car on the trailer. I started up the car and it had the same sound as Billy's, but then after 5 min his went away and mine went away about 1 min after his, so we were curious and made a call. Well put it in his shop called the engine builder James Mount, and we went full force with trouble shooting the problem. We dropped the pan, splash guard, and took a light and shined it up to the sleeves and they looked legit but still could not see the pistons sides of course, we checked the oil under a micro scope, no shavings of aluminum. We pulled the plugs and James put his fiber-optic camera in each port and still everything looked ok. James noticed that the oil was dark for only having 1800 miles on it and we thought the turbo was coked up, checked the turbo and it's a lil coked but cleaning up with the fresh oil. He checked the rod bolts and they were ok torque wise. James said he set the specs the same as Billy's per Ross Piston. So we pulled the head and rotated the crank and the sleeves are not scarred. Piston tops were fine, valves were fine, the lash was fine prior to pulling it, so everything is ok.

I just got home 5:21AM and the motor is back together and and I just got done putting the fresh oil back in but I'm going to wait to start it cause the neighbors will get pissed. I'll update early am and take a vid of it.
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Old 08-14-2007, 05:25 AM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

Originally Posted by bitchasscracker
your wife is a coke ----- maybe that is the problem
haha your funny but seriously stop it.
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Old 08-14-2007, 05:31 AM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

Originally Posted by Dmc1
damn that sucks man.. like these guys are saying it has to be an issue with pistons slapping around in the bore when it's cold. when the motor warms up it probably all expands enough for it to go away. The only way of fixing it is buying oversized pistons and like they said have the cylinders bored to match the pistons.

and for the record IMHO his car is the only car ive seen where I actually halfway like the widebody kit. and all his work looks top notch on the body work. he just needs some more experiance with the motor side of things
---- It I started the car and and about 4 min the knock went away and I check the Hondata knock voltage and it reads only 1.14 voltes, I'm ordering a J&S knock sensor when I get up. I called Billy and he said his reads about 2.1 so I guess I'm safe. And EACH CYLINDER WAS BORED MATCH, what engine builder does not do that? Seriously I had a outstanding pro builder do it not some off the wall shop that claims it. He builds motors for alot of SCCA racers, i had to wait 4 months to get mine in.
And heres Billy car its at the end of my run from 2 years ago. http://videos.streetfire.net/video/b...0c005313fc.htm
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Old 08-14-2007, 06:59 PM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

Originally Posted by widebody93
I just got home 5:21AM





what were you doing till 5:21
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Old 08-14-2007, 09:01 PM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

How much compression are you running?

I never had any knock problems with our GE sleeved H22. 9:1 Comp CP Pistons...
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Old 08-14-2007, 09:10 PM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

88mm Ross Piston with 9:1 compression, total seal rings.
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Old 08-14-2007, 09:14 PM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

Originally Posted by bitchasscracker





what were you doing till 5:21
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Old 08-14-2007, 11:03 PM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

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Old 08-14-2007, 11:06 PM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

Originally Posted by widebody93
88mm Ross Piston with 9:1 compression, total seal rings.
Total seal sucks.
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Old 08-15-2007, 12:02 AM
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Default Re: H22A Forged Piston=knock? BIGDADDYVTEC HELP

Originally Posted by 92 4doorsleeper
Total seal sucks.
Rings arent sealing properly until warmed up (after heating up the rings expand a bit and seal up) Would be my guess. Seems to jive with all the other symptoms. That would give you a little bit more then avarage carbon build up in the oil and cylinder, and maybe Im thinking give your turbo a little coke job.

Probably not a severe compression loss

How many miles on this build? This may also just be the rings breaking themselves in
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