on cars that are actually sensitive to the charging system's drag at full
charge you set base idle with lights turned on. then you get a bit high
idle with charging system unloaded.
throw in an advanced cam design and it gets even more "interesting". your
carbs are probably spot on!
chuck.
hmmm i guess i fool around with too many small bore cars !
-----Original Message-----
From Chris King <cbking at alum.rpi.edu>
To: spridgets@autox.team.net <spridgets@autox.team.net>
Date: Friday, June 18, 2004 9:36 PM
Subject: Carb tuning
>As I was adjusting the carbs today (after adding heavier springs per
>Daniel1312's reccommendation, and adjusting the valve clearances), I
>noticed something odd, at least to me. If I let the car idle for a
>minute or so, and then rev the motor, there's a small cloud of fuel that
>spits back out the carb throat. That would tell me the carb is rich, but
>it seem to be just fine per the "lift the piston" method. What am I
>missing?
>
>As an aside, I also noticed tonight that the car idles lower with the
>headlights on (~900 rpm) than with them off (~1200 rpm) 900 rpm with
>this cam sounds like the engine wants to stall, but it keeps running.
>Any thoughts?
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