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<TITLE>RE: Opinions wanted ( analysis of the effects of spark advance variation on vacuum)</TITLE>
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<P><FONT SIZE=2>Ron, I limited to 900 RPm +/- 50 RPM, so 850 - 950 rpm.</FONT>
<BR><FONT SIZE=2>Sparks were sorted (as they vary too) and sparks with low data counts were dropped. </FONT>
<BR><FONT SIZE=2>-Christian</FONT>
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<P><FONT SIZE=2>RPM is more solid as vacuum increases (lower map) </FONT>
<BR><FONT SIZE=2>Taming a cam with 219/228 duration and 112 LSA at idle is fun indeed.</FONT>
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<P><FONT SIZE=2>-----Original Message-----</FONT>
<BR><FONT SIZE=2>From: Ron Schroeder [<A HREF="mailto:rjs@bnl.gov">mailto:rjs@bnl.gov</A>] </FONT>
<BR><FONT SIZE=2>Sent: Friday, September 21, 2001 11:35 AM</FONT>
<BR><FONT SIZE=2>To: gmecm@diy-efi.org</FONT>
<BR><FONT SIZE=2>Subject: Re: Opinions wanted ( analysis of the effects of spark advance variation on vacuum)</FONT>
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<P><FONT SIZE=2>At 10:04 AM 9/21/01 -0400, you wrote:</FONT>
<BR><FONT SIZE=2><snip></FONT>
<BR><FONT SIZE=2>>My theory was based on for the same given RPM (900 rpm) the spark </FONT>
<BR><FONT SIZE=2>>advance which yielded the highest vacuum would give the best fuel </FONT>
<BR><FONT SIZE=2>>economy.<snip></FONT>
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<P><FONT SIZE=2>How constant was the idle rpm held? Small changes in idle speed can give signifficant vac. changes.</FONT>
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<P><FONT SIZE=2>Ron Schroeder</FONT>
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