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Old 09-23-2011, 02:24 PM
teejmcdee teejmcdee is offline
Motorized Bicycle Newbie
Join Date: Apr 2011
Location: Carlsbad
Posts: 3
Default Spark Plug/ Expansion Correlation Question

Hey guys! I have a question about the way an expansion chamber affects the mixture/jetting & fuel ratios, etc. I just put on the newer NT speed carb (incredible by the way), and am looking at adding an SBP expansion chamber. But I've read that I'll have a richer mixture. Would that mean I need to:

-thin out my mixture - if so, to what?
-move the clip on the little carb pin -if so which way?
-get a different spark plug to take advantage of the expansion and carb?

Any help you can offer is greeEEatly appreciated; I'm new to all this stuff, and am loving learning, but have a long way to go.



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