I have a 2002 banshee with fmf pipes, single k and n filter with no airbox lid, boost bottle, reed spacer, timing plate at +3 or 4. i bought it used already set up. it has 310 main jets, didnt look at the pilot jets yet because i need a smaller screw driver.
does that sound right? it runs ok, doesnt foul plugs, doesnt have too much power in the low end at all, and 1/2 throttle and up just bogs like crzy.
but 1/4 or 1/3 throttle it makes nice smooth clean power.
i have at apart, tell me what to do! [img]i/expressions/face-icon-small-smile.gif[/img]
thanx

 

btt

 

310's sound reasonable for the set-up....asuming it's not ported and the lid is off. What do the plugs look like?

 

lid is off, its NOT ported. i am gonna go do a complete plug test right now with new plugs.
but the other day, I put new plugs in and rode all day maybe 5 hrs and they were pretty clean, just light tan.
is it possible that 24:1 yamalube gas mix is leaning it out too much? (used that for the break in) it was brand new, mods were done but it wasnt even broken in yet. now that it has about 10 hours on it i was thinking about going to maybe gold spectro and 32:1.
any more advice, thanx people.

 

I have ran Yamalube in previous Banshee's at 32/1 with no problems at all.....no-one runs 24/1. I would jet up until the plugs start turning dark....not tan (sutty dark and you will foul plugs). A lean bog with your mods and 310 mains sounds odd....but every machine is different.

 

so before i jet up, ya think i should drain all the 24:1 and just try 32:1 and see if that fixes it?
thanx again mang!

 

I don't think 32/1 is gonna do the trick......but would re-mix too 32/1 anyway just too take that potential problem from the equation.

 

I've got about the same mod on my Banshee and have 300 mains at sea level up to about 1000 feet. I have always used Yamalube 2R at 40:1 ratio or Belray MC-1 at 50:1 with no problems. Every machine is a little different so you are pretty close with what you have setup minus the premix ratio.

 

i just came from NACS racing, I went in person and spoke with doug, he told me that the 310 is way to rich and gave me 260s and 270s, I am about to put them in, I showed him the plugs, he said rich. sound right?

 

I would agree 310 should be close I have 300 in my shee and it works good I have the stock pilot and just adjusted the air screw to clean up bottom end.