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raising compression on L92s

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Old Oct 17, 2006 | 07:51 PM
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Default raising compression on L92s

i have a set of L92 heads if i am not mistaken, they are 69cc. whats the lowest you can get these, 62 cc? what about getting them smaller, would welding the chambers be recommended? any info would be helpful, since i wanna bring the chambers down to at least 60cc.
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Old Oct 17, 2006 | 08:11 PM
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I'm running these on a 402 w/ 2cc pistons. Milling .030 of them brings me to 65cc and right around 12:1. WHat pistons are you running?
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Old Oct 17, 2006 | 10:15 PM
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Originally Posted by WKMCD
I'm running these on a 402 w/ 2cc pistons. Milling .030 of them brings me to 65cc and right around 12:1. WHat pistons are you running?
custom diamonds with a -7 cc dish
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Old Oct 18, 2006 | 12:22 AM
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No you would want a custom dome if you wanted TONS of compression.

Bret
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Old Oct 18, 2006 | 06:13 PM
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Originally Posted by SStrokerAce
No you would want a custom dome if you wanted TONS of compression.

Bret
i understand, but i wanted to find another way around changing pistons. i want to be @ 11.5:1 minimum.
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Old Oct 18, 2006 | 08:18 PM
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You could mill those heads quite a bit I've seen 100 thousands.
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Old Oct 18, 2006 | 08:20 PM
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I think the problem with milling past a certain point is the fitment of the intake. I think this was brought up here not too long ago.
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Old Oct 18, 2006 | 09:58 PM
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so would welding the chambers be another option?
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Old Oct 21, 2006 | 03:51 PM
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Originally Posted by 1QWIKZ
so would welding the chambers be another option?
Not a cheap one....

the RIGHT piston would be the key, but I'm not selling them and neither is anyone else.

Bret
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Old Oct 21, 2006 | 04:05 PM
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If you only want 60 CC on those heads Angle mill them. If you don't know someone who can angle mill well LAF@U
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Old Oct 21, 2006 | 10:52 PM
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I had mine angle milled to 64 cc with no problem.
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