1stgensrx
New member
Looking for 2, 40mm mikuni carbs. Must be in good working order, complete, and come with throttle and choke cables. Please contact Darren @ 1 807 323 0572. Thanx
Yamaha Nutz
New member
if you have no porting done to the sled 38mm is the way to go a stock intake on 78-80 cylinders is to small for 40mm
Ported like crazy. I need 40mm
1stgensrx
New member
Found two sets for $100 on set of a parts carbs .....stock 38s and another set of 38s bored to 40mm with power jets. Bonus!!!. Thanx for all who responded
1stgensrx
New member
Thanx but i found a set of 38s bored to 40s with power valves locally plus a stock set of 38s for $80 .....good deal i think.
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srx440b
New member
Good deal but I seem to remember reading on here somewhere, I think it was yamiegod 3:16 recommended blocking off the power jet a upping the main by about 20 to make jetting more consistent and I think easier to dial in.