jetting.

sev

Member
Jan 27, 2009
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Luck
i just got my blaster bored 2.00 over, and ported and piped im running a 240 for a jet now on my stock carb i was wondering if thats big enough for now or if i need to go bigger (keep in mind its winter in WI, and its about 5-25 avg now or if that would even matter)
 
well with the mods on my machine im running a 260 main (stock carb)
also colder temps mean more fuel ie. bigger jet
do a plug chop and that should get you started
remember this... running lean can do damage to a motor but running rich will only fowl plugs
 
55 is right, start with a 300 or 310 and work back if u need too. With those mods plus cold weather ur just asking for trouble if u get on it with that 240 in there. Your going to want to change your pilot and needle too if u haven't already.
 
whoever ported it should get you straightned out ..who better to ask than the shop tha t did the work the y would know what jetting their motors favor