Toomey B1/jetting

[Fast6hand]

Alright guys. Just got a B1 exhaust. Looking for a good starting number for main jet with my mods. Right now there's a 330 in it. I'm at sea level.

 

[Blaaster]

Start the plug chop at #330 and plug chop back.

If the weather is not too cold you may end up at #310.

 

[Fast6hand]

Start the plug chop at #330 and plug chop back.

If the weather is not too cold you may end up at #310.

Weather is getting hot. I think we're the only place in U.S. that isn't freezing besides Arizona. Anyway, there instructions call for a 310. And I'm assuming that's a complete stock engine. So yea, I'm gonna start at 330.

 

[Blaaster]

Toomey recommends #310 but that is with holes drilled in the air box lid.

 

[Fast6hand]

Toomey recommends #310 but that is with holes drilled in the air box lid.

Right. And I'm running a CFM airbox and uni-filter. I really just want to make sure if I plug chop the 330 it will be sufficient, and not to lean. I've read on the jetting thread, some people were running 340-360. But they may of been in higher elevations at colder temps.

 

[Blasturd]

Right. And I'm running a CFM airbox and uni-filter. I really just want to make sure if I plug chop the 330 it will be sufficient, and not to lean. I've read on the jetting thread, some people were running 340-360. But they may of been in higher elevations at colder temps.

Higher elevation would require smaller jets not larger.

 

[michael dobey]

If I'm about 800 feet above sea level what jet should I use for a toomey b1?