help me get a baseline on jetting

[tobaccogrower]

it's a 89 blaster. .20 over wiseco, getting trail ported, full fmf gold fatty system. what should i start at for a baseline jetting? i know how to dial in a carb. just want some opinions so i can get it close. thanks!!!

 

[01blaster_freak]

270 or 280 main jet.

 

[1badblaster]

it's a 89 blaster. .20 over wiseco, getting trail ported, full fmf gold fatty system. what should i start at for a baseline jetting? i know how to dial in a carb. just want some opinions so i can get it close. thanks!!!

what filter are you running? air box lid on or off?

 

[tobaccogrower]

i'm not sure what kind of air filter it has it's oval and has a outerwears on it. more then likely leave the airbox lid on.

 

[1badblaster]

I would say 240-250 on the main, stock pilot should be fine, 3rd clip on the needle and about 1 1/4 turns out on the air fuel screw should put you in the ball park of where you need to be.