i was wondering what i need to do to my carb. to get every thing running good. what size jets and any thing else should i change. also where can i get them from any internet sites that anyone knows of. abouth how much do they cost
thanks to any one who can help.

 

You should post this in the yamaha forums. You ll get alot more help in there. Sorry I cant help ya.

 

Main jet should probably be somewhere between 260 and 280 with the needle lifted to the 4th position. On my Banshee with Pro-Flow Uni setup (no lid) and Paul Turner Hi-Rev pipes, I was running the needle in the 4th postion with 290 mains.

I always got my Mikuni jets from FTZ. I live about 15 minutes from them. Yamaha dealers should have some in stock. I don't know where you would find them on the net.

Almost forgot to tell you, I left the stock pilot jets in mine (25). Tried 30 pilots and it was too rich. You can special order 27.5 pilots, but I don't think it is necessary.

Daren

 

I have T-5's, Twin Air air filter, V-Force 2 reeds, cool head, and some mild porting on mine and 280's were plenty. Now I run methenol.

 

The one thing that I have not seen mentioned is altitude...... My stock bike with a k&N filter w/no airbox lid and pipe's, I ran 310 mains in the stock carbs at sea-level up to 1000ft.

www.rockymountainatv.com sells jet kits for all bikes.

 

What pipes are you Running because if your running toomeys you sould be using a 280 main jet.

 

toomey recomends with their pipes that you run a 280 from sea level to 2500ft and 2500 and up to around 3500ft use a 270 then the higher the altitude you sould go down one size.

 

Need help getting my banshee.... It has stock carbs with 220 main jets it seems not to have the power off the line like it does with 200 Mains. But I have t3 pipes,boost bottle,200 watt stator new coil and Cdi, I also just rebuilt the top end still @ 64mm piston? Please help im at 5000 ft

 

I just can't seem to find the right jetting I trust 240 and 260 it Boggs worst

 

are u adjusting your air fuel ratio???