jetting problems need help

[firemonkey]

Ok here we go. I am working on a friends 96 banshee that he just picked up from one of his friends. He knows the history of the bike it use to run on straight race fuel 110 octane, know we have converted it back to run 93 octane fuel. The bike is bored 70 over and the carbs are “hogged out” unknown to me is how big that is. FMF fatty pipes and the TORS and REV limiters are gone. The pilot jet was at 30 and the main is 290 the air screws are set at 2 turns out and needle jet set in the middle at 3, K&N filter with no box. All motor upgrades were done by a PRO. The bike use to run but they though it had a problem with the motor so they tore it apart and never was put back together so here is the problem 1. We can fire the bike by adding a little fuel in the cylinders but it will not stay running. We were told to bump up the pilot jet to a 32.5; we did with the same problem. Problem 2: Only 1 side of the motor with fire it seems to be getting fuel in the side that doesn’t fire. We were told to switch the slides in the carbs around thinking that the slides where placed in backwards. So we did that and know the side that was not firing is and the other side doesn’t fire. The side that fires is the side without the choke and it has been cold here in Washington and ideals good.

 

I am looking for help I have been working on shees a while and never have seen only one side of the motor fire or switching slides around and the other side will work and the other don’t. Is this a jet problem or carb settings?

 

thank you for the help

[shakar]

32 pilot might be big for an unported motor id stay 27.5 and maybe go up to 320 or 330 on ur main if it s that cold and ur around sea level. i think you can switch ur plugwires to oppisite sides and see if the prob with only 1 side running follows .

goodluck

Edited February 23, 2010 by shakar

[firemonkey]

32 pilot might be big for an unported motor id stay 27.5 and maybe go up to 320 or 330 on ur main if it s that cold and ur around sea level. i think you can switch ur plugwires to oppisite sides and see if the prob with only 1 side running follows .

goodluck

 

 

 

thank you i will try the jets a switch, with the plugs we know they are working because we switched the guts of the carbs around and the motor will fire and ideal on both side just not at the same time.