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head milling question.....searched but kind of a specific question *helo

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Old Jun 2, 2005 | 12:08 AM
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Default head milling question.....searched but kind of a specific question *help*

head--
i just picked up a ported p72 head with crower valvetrain, ITR cams, and AEM cam gears

block---
jdm GSR stock 10.6:1 pistons

to make the most out of this setup i'd really like to have the head milled. i was thinking a little over 11:1 is all that i'd want

i'm pretty sure 30thousandths and 2 layer stock HG would get me there, but i don't know how to adjust the cam gears.

So here's my Q's
-any idea what my compression would be?
-would i run into clearance problems?
-how much to i advance each cam gear?

i really need some concrete answers on this, i'm trying to get it together in two days, and i probably won't take it off again once it's on there.
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Old Jun 2, 2005 | 08:57 AM
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up.....need an answer on this soon
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Old Jun 2, 2005 | 08:59 AM
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Default Re: head milling question.....searched but kind of a specific question *help* (thehatchninja)

cam timing retards 1 degree per .010 that you mill.....if memory servves me right
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Old Jun 2, 2005 | 12:47 PM
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Default Re: head milling question.....searched but kind of a specific question *help* (SUPERNATURAL)

so i need to advance both cams 3 degrees. Can anyone confirm this?
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Old Jun 4, 2005 | 10:12 AM
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Default Re: head milling question.....searched but kind of a specific question *help* (thehatchninja)

ok, i called around to some machine shops yesterday. prices were from 40-50 bucks. I decided to go with the closest one, that quoted me $45. The valves were left in there, since i dropped in off at about 5:30 friday afternoon it's going to be ready on monday.

any guess what my compression will be using a stock HG?
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Old Jun 4, 2005 | 12:49 PM
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Default Re: head milling question.....searched but kind of a specific question *help* (thehatchninja)

.030 shave on an 10.6 to 1 H22 using stock head gasket yields around 11.4 to 1. The compression calculators are very easy to use. might want to give it a try. Just my two cents.
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Old Jun 4, 2005 | 08:28 PM
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Default Re: head milling question.....searched but kind of a specific question *help* (Honda_Tengoku)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Honda_Tengoku &raquo;</TD></TR><TR><TD CLASS="quote">.030 shave on an 10.6 to 1 H22 using stock head gasket yields around 11.4 to 1. The compression calculators are very easy to use. might want to give it a try. Just my two cents.</TD></TR></TABLE>

thanks....don't know how to adjust for a milled head on the compression calculator.
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