[Fot] Subject: Colortune spark plugs

[Catpusher at aol.com]

I first tried the colortune after the then "The Autocar" had a  positive 
test of it in the early 70s.
For a street car with SUs (or Stroms) it is great, because a  production 
car with SUs has the proper mixture set at idle, and the properly  maintained 
carb deals with the rest.  I have used it to help tune (the  carbs are the 
last thing to adjust) a few hundred cars.  My  1967 tow  car would make the 
Calif emission testers look on in wonder with the 3 SUs  purring away with 
very low emissions, and it still purrs at 257,000  miles. You can see a 
fraction of a SU "flat" adjustment.  Applied  physics. 
 The instructions make it clear that it is not to be used at high  
RPM/load.   NFI
 
Hardy
 
From:  sherry robyn <sherryjimmy6116 at att.net>
To:  fot at autox.team.net
Subject: [Fot] Colortune spark plugs

Is anybody  using Colortune spark plugs to any advantage?  Jim in Folsom,  
CA