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going from copper to OEM HG: how will this effect my tune?

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Old 11-04-2005, 03:31 PM
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Default going from copper to OEM HG: how will this effect my tune?

I am about to switch from a copper headgasket to an OEM hadgeasket.

I am hondata tuned and was wondering how much this change in gasket thickness would effect my tune? I have no clue what thickness my current copper gasket is....

Also, should i spray the OEM HG with copper spray for a better seal or is that just a myth??
Old 11-04-2005, 04:01 PM
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whats the difference in size?
will it raise or lower compression?
Old 11-04-2005, 04:04 PM
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i wont know for sure until i pull the head and measure the current gasket thickness with a micrometer.

Would on be preferable to the other? (raise/lower)? My compression is currently 8.5:1....
Old 11-04-2005, 08:15 PM
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bump, copper spray? Effect on tune?
Old 11-04-2005, 08:24 PM
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Default Re: (turbotime)

im pretty sure a lower compression ratio (thicker gasket) will make your current tune run richer while a higher cr (thinner gasket) will lean you out some. someone correct me if im wrong
Old 11-04-2005, 08:28 PM
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i think the compressed thickness of an OEM style FLEPRO gasket is 0.30in according to summitracing.com. So as long as my current headgasket is thinner than that i will be ok? (maybe a lil rich)

How mich thinner would the OEM HG have to be in respect to my current copper HG to lean me out to the point of detonation/problems?
Old 11-04-2005, 09:20 PM
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Default Re: (turbotime)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">i think the compressed thickness of an OEM style FLEPRO gasket is 0.30in according to summitracing.com. So as long as my current headgasket is thinner than that i will be ok? (maybe a lil rich)

How mich thinner would the OEM HG have to be in respect to my current copper HG to lean me out to the point of detonation/problems?</TD></TR></TABLE>

pretty sure .030" is stock thickness. so maybe you are lucky and your tune wont be effected at all.
Old 11-05-2005, 03:11 PM
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ok so the copper HG is 0.043 thick, if the oem is 0.030 compressed how lean will this make the tune?? Anything i can do to richen it up?
Old 11-05-2005, 08:45 PM
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbotime &raquo;</TD></TR><TR><TD CLASS="quote">ok so the copper HG is 0.043 thick, if the oem is 0.030 compressed how lean will this make the tune?? Anything i can do to richen it up?</TD></TR></TABLE>

that im not too sure about. maybe someone with more experience sould chime i here. is there some type of equation to figure this out
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