What jets to run

[Sage177]

So I picked up an 03 blaster. It's got a Vito's .40 bore kit, fmf slip on but I'm getting the full pipe, and I run mesh over the air box. The guy I bought it off did not take care of it. I just got done stripping it to frame and making sure everything is tight. I'm down to the carb. It runs great but I want to have the correct jetting what jets should I run? Is there a kit I can buy?

 

[MURPH]

we need to know what ur elevation and temperature is first.

 

[Sage177]

Oh yeah my bad. I ride from about 60f to about 500. And in the summer it's about 70deg and in the winter from 30 to -30deg Fahrenheit.
I'm not too worried about the winter because I don't ride much. But I do like to rip around a little on my street. Is there a jetting that works best in cold weather?

 

[Blaaster]

If you ride at all in the really cold weather the jetting should be increased to avoid a lean mixture.

Steer away from jet kits they seldom contain the correct size jets.

Grab a handful of genuine jets #270 through #330, start big and plug chop to confirm.

 

[tbrooks]

^^^^yep, do you have a vitos 240 kit or is it bored .40 over, there is a big difference. Is the oil injection still on or is it premix

 

[Sage177]

Well the guy I bought it from said it was the Vito's kit, is there any way to check? It's premix now but I bought the oil tank and I'm makin it back to Injection

 

[Blaaster]

It's premix now but I bought the oil tank and I'm makin it back to Injection

Great choice!

 

[MURPH]

If ur cylinder is stock it would say y1 on the side of the intake by the reeds if it is a vitos all there would be is a couple horizontal lines in the casting..they r also silver here is a pic of my Vito 240 cylinder if u zoom in u can c the lines

 

[Larry's Shee]

Would also help if you listed your pipe and air filter setup