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<DIV><STRONG>Troy,</STRONG></DIV>
<DIV> <STRONG>I have three 1.40 Sports and all three of
them have required this modification. Buddy Brammer has two and Ray Rhodes
has 1 and all of theirs has required this modification also. The problem
does not show up until the engine has broken in and requires less fuel.
Since the Sport has the "L" carb on it, which requires more fuel at idle, mid
range, and at full throttle, there in-lies the problem. The Sport requires
less fuel at idle and at midrange than the "L" and is loading up at the idle no
matter how far out you adjust the low end screw. By opening up the hole to
1/8 inch, you effectilvely lean the mixture at low end because after enlarging
the hole, the engine will idle faster causing you to re-adjust your low end
travel point, meaning that you close the carb more, meaning less fuel being
mixed with the same air being taken in by the carb. I talked extensively
with Richard about this problem, and as he assured, the engine purrs at idle
better than any YS I have ever owned after the modification. As I
mentioned, we are 6 for 6 here in our area, and I talked to several people at
the Nats that had the same symptoms, and they were really happy to find a
resolution to the problem. My thinkling is that if you have one that does
not need the modification, then you have one that is using a lot more fuel than
the normal Sport for what ever reason. Our Sports are turning a 16x11 8700
to 8800 rpms (static) on average. Ray's turns a little less than my three
and Buddy's two. Just my two cents
worth...Larry</STRONG></DIV></FONT></BODY></HTML>