Listers,
Thanks again for all the feedback last week on the carbs that won't idle
below 1500 rpm.
After a week delay, I finally got back to the Spitfire carbs. We had a WKA
divisional to run last Sat and Sun hence there was no time for the Spit...
but that's another story.
The butterfly does seem somewhat loose on the front carb. I loosened and
centered the butterfly in the shaft and then tested. There is light getting
around the butterfly but it looks even on all sides; maybe a little tighter
at the top. I checked the clearance using the same flexible feelers I use
to check piston clearance and it is between .002 and .003 all around. I
scavenged a butterfly from a parts carb and it measures out the same way.
Is there a spec for this clearance? Is .003 too much? Some air has to pass
through or you wouldn't be able to crank or idle it... right?
Tim Benner
1965 MKII
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