I'll second Vance's calculations. If you refer to Richard Goodparts CR
chart, http://goodparts.com/tech_docs/TR6_Compression_Ratio.html, one that
gave very similar numbers to some little program my machinist used, you will
notice in the preceding notes that it already takes into account the 4.0cc
for the head gasket. Deck height of 0.015" is equivalent to about another
1.7cc which puts you in around 45.7cc, or around 9.4:1 CR.
Greg Dito
CD6250L
----- Original Message -----
From: "Navarrette, Vance" <vance.navarrette@intel.com>>
> Absolutely. Also, don't forget he made his calculations with a
> zero deck height, which is not the case for most of us. To get zero deck
> height you need to deck your block approx 0.015". The deck height adds
> another 1.7 cc by my calculation (probably wrong, but I try).
> If I assume that you have the std deck height (1.7cc) and use
> Kastner's 3.7cc for the gasket, I come up with 9.44:1, very close to
> what you originally thought. I think you are probably just fine.
> -----Original Message-----
> From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
> Behalf Of Lizirbydavis@cs.com
> Sent: February 24, 2005 4:15 AM
> To: tr6nut@sbcglobal.net; 6pack@autox.team.net; RazorBobSr@aol.com
> Subject: Re: FW: Are u kidding me???
>
> Hugh,
> Do you think Kastner was considering the extra 3.7cc volume when he
> described
> "finished cylinder head with valves seated" = 41.6 cc for a C.R. of
> 10.25:1?
> My combustion chamber volumes are 44cc. I figured (with stock bore)
> that my
> C.R. was about 9.4:1. If I add 3.7 ccs for the gasket, my ratio is
> significantly less than I thought. I didn't think he was adding in the
> gasket volume.
> Joe Davis
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