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[QUOTE="Rich Rohrich, post: 1373938, member: 16241"]
You can't hurt the engine from running too lean a pilot jet, and in almost all cases that will be true of the needle position as well as long as the needle jet has enough area to feed the main at WOT, but that's easy to verify. For the type of riding conditions most will encounter the worst that comes from being too lean on the pilot is a hesitation/bog. If you get way too lean on the needle it will be obvious from the performance most of the time. Worst case on the needle posiiton being too lean is possibly some spark knock in low speed, high load situations where the throttle is open past 1/2 and maybe a throttle run on coming down from high speeds.

No one ever broke an engine from running too lean on the pilot. Lean is good in the low speed portion of the fuel curve.

It's rare that jetting done on a dyno will translate correctly to a real world riding situation. Jetting is about matching the fuel curve to a load sequence, and duplicating real world loads on a Dynojet type setup is nearly impossible. You can get it in the ballpark, but razor sharp jetting takes work in the real world.
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