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RE: Compression and head shaving

To: Walt Philipson <wphilipson@nc.rr.com>
Subject: RE: Compression and head shaving
From: "Robert M. Lang" <lang@isis.mit.edu>
Date: Mon, 25 Nov 2002 12:59:02 -0500 (EST)
On Mon, 25 Nov 2002, Walt Philipson wrote:

> Bob,

Hi All.
 
> Isn't it (Volume at BDC)/(Volume at TDC)=CR  ?

Yep it is. My error. Thanks for pointing it out.
 
> You have to add the cylinder volume to the combustion chamber volume to get
> the total volume at BDC. So wouldn't the CR for a 41cc combustion chamber
> and 410 cylinder volume (swept volume) be:
> 
> (410+41)/41=11  ?

That is correct.

> Walt Philipson
> 74  TR6

regards,
rml
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