Alright, wondering what you guys are using for your Thruxtons. I would say the preds are about the same as the Bubs in air flow - so with the NARK, Bubs and Snorkle removed I was sent 42 / 135's - sound right?
Hey, Whithurst youre going to get one million awnsers for that question. I'm telling you Rick in the shop says 155 main jet with maybe a 150 minimum. On the pilot he says a 45. as far as the air screws we make em' perfect with our exhaust gas analyizer here at work. Remember someone in Montana is going to have totally different advice for you. You have to factor so many different variables with jetting. We've done enough research here to get it right for our conditions in Southern California.
Be thankful if you only get a million answers. For what it's worth (custom pipes). 140/40/3 turns/1 shim/3mm drilled slide. Dyno says 69bhp. Mixture perfect. Sea level, 60% humidity. Hey, it's easier than folks make out. Good luck.
135/42, 3 turns out and that is perfection for me with a NARK, K&N 's . AI gone, ProCom module, ignition wires, coils, iridium plugs, 93 octane gas, D&D pipes (loud but no popping) and hi-flow petcock with big lines. can't remember anything else-she really runs good. No problems so far except when going to high altitudes it is too rich (6,000 feet).
you should be real close with that set-up depending on where u live.
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