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Date:         Tue, 7 Mar 2006 12:45:48 -0500
Reply-To:     Al Brase <albeeee@MCHSI.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Al Brase <albeeee@MCHSI.COM>
Subject:      Re: "enough" vs "too much" monitoring,
              was: permanent fuel pressure gauge
Comments: To: John Rodgers <inua@CHARTER.NET>

Funny, that cylinder monitoring thing was called "Colortune". I have one. It consisted of a spark plug with clear glass insulator which conducted the light of combustion out of the cylinder. An a small mirror to see it better. Not surprisingly, it is not ver much different than the flame color in a gas furnace. Blue-white is lean and yellow orange is rich. The only practical use of such a thing is to set the mixture at idle. It would be pretty diffficult to put one's face down by the spark plug while the engine was under full load. (Well, it was the 60's and it WAS made in Britain!) But still kinda neat. Al Brase


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