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Old 09-23-2013, 12:07 PM   #1
venxxxxx   venxxxxx is offline
 
Join Date: Sep 2013
Posts: 20
70cc upgrade - jetting issue ?

I upgraded my scooter to 69cm^3 last night. I had to milled down the crank a bit to fit it: got an eton beamer and i bought a typical JOG cylinder upgrade.
But anywho, I kept everything else stock and this morning I cranked it up rode it around to break it in.

Power and throttle improved but only does 30mph. Is it just the breaking in process thats limiting the speed ? or do I need jetting (increase fuel ?)

My old 49cc cylinder can do 35mph.

What do you guys think ?



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