My 93 has gone from 904, to 944, to 966 all with 41mmFCR's installed. In that time the main jet has not been changed. The needle was raised sometime ago 1 notch and that continues to be the setting the bike likes for nice roll on.
About being lean and an additional 44 CC's. I'm not a tech and did not stay at a holiday inn. Still though, why would a carb care that you made the cylinder diaplacement larger?
Open the airbox, flow the head, scavange the exhaust with a spiffy header, and I can see moving more air then the main jet can spritz fuel into, but just beefing up the jugs?
Any explanation would serve to enhance my limited knowledge.
Yes, I have had to run premium gas with the 944 in the summer. I've been trying 89 with the 966 when conditions allow.
Gary
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