Quote:
Originally Posted by xlint89
Tom from Syc Powersports has tried to convince me that a 26mm is still too big to use for most of the "built" GY6's. He feels (and is probably right) the stock 24mm carb is more than enough for these small engines. I'm hard headed and have to learn for myself sometimes.
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I agree with him, The 24, properly set up and jetted does fine for most motors out there. The intake and exhaust tracts have got to be punched out to handle the flow of anything larger or you'll create a bottleneck which can hurt more than it helps.
I've always felt the tract sizes should match the flow capabilities of the carb, (24mm carb-24mm tracts), etc. but I could be off- base with that logic.