benoyracing
New member
I am doing some technical research and my notes say that the Viper had Mikuni TM33 carbs. Can anyone tell me, with certainty, what series Mikuni main jets go in these carbs? Any help is appreciated. Thanks!
mopar1rules
Active member
the small round head, which is 102/221
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benoyracing
New member
thank you for the reply. I see in the Yamaha microfiche that there are many what I would call "oddball" sizes for these jets listed as optional parts. Sizes like 148.8 and 156.3? I am also seeing the more commonplace sizes in 2.5 increments? In the aftermarket, I only find the 2.5 increments available. Are the commercially available Mikuni 102/221 jets in the 2.5 increments the same jets? For instance, if I order a Mikuni 102/221 main jet #150, is the same as the Yamaha part# 362-14231-30-00?
Thank you for your help!
Thank you for your help!
mopar1rules
Active member
Yamaha is the only place to get those "oddball" jet sizes, like 146.3, 148.8, 151.3, etc. FYI, the stock viper main jet is 156.3.