jetting advice

[oldschoolyfs]

I am using the fmf exhaust and twinair filter with no lid on the airbox.
The carburetor is the stock banshee mikuni, with a 280 main.
Should i use a smaller size jet?
The left side banshee carb was connected to the right side carb by a rubber vent tube. Since i used one carb, should i leave this vent open or should i shut it?
Thanks.

 

[oldschoolyfs]

Its number 42.
Should i leave it open on the Blaster?
On the banshee, it connects the two carbs.

 

[Awk08]

The left side banshee carb was connected to the right side carb by a rubber vent tube. Since i used one carb, should i leave this vent open or should i shut it?
Thanks.

it needs blocked off, I'd glue/RTV a vaccuum cap over it

280 main is a good starting point for an FMF pipe, but not guaranteed to be correct, only plug chops can determine that..............
http://www.blasterforum.com/threads/how-to-plug-chop.53237/

 

[jus_me]

Is this a banshee carb on a Blaster? (By what post says we assume it is) If so than there are maybe a few other jetting issues you may want to address also. Jet needle, main jet, pilot jet etc..


There's a sticky in carb section with the stock Banshee jetting compared to Blasters ..

 

[oldschoolyfs]

Thanks for the replies.
When i bought my Blaster, it was fitted with a Kehin race carb, probably from a 250cc motocross bike. The carb had some issues and it was leaking very bad.
A friend of mine who owns a modified Banshee, gave me the stock Mikunis. I only used the left side carb because it is the one fitted with the choke knob. The jetting is stock. (for the Banshee engine).

 

[Awk08]

The jetting is stock. (for the Banshee engine).

that may not work, at least for the pilot jet, I think banshees use 30 or 28 pilots ?
you'll need to check and/or put a 32.5 stock blaster pilot on there.
needle difference ? our blasters like the stock blaster needle on middle clip position. you cross reference needle # on bike bandit schematics or carb parts warehouse.
that 280 main is a good starting point for plug chops