Quote:
Originally Posted by JimShortz
Interesting, ripcuda, that you got yours to run well with a 110, whereas I couldn't get beyond 105, even with a very open exhaust and filter, as well as being 1000' lower than you! I'm guessing that this is the impact of drilling my slow jet out from a 40 to more like a 45. People talk about this having some impact right across the rev range. I'm sure no expert - just trying to figure things out and learn...
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Yes, the pilot jet affects fuel mixture right on up the range to wide open. When you get to 1/4 throttle, the needle starts adding fuel to what the pilot jet is already delivering. At 3/4 throttle, the needle has done all it can, and from here on up, it's 100% main and pilot jet. The needle controls fuel flow through the main jet from 1/4 throttle to 3/4 throttle...ARH