yamaha banshee just wont freaking hit powerband

[luna2001xx]

i had to make a post because i couldnt find my answer but i just got this banshee current mods atleast that ik of is that it has 

dual full fmf pipes 

vitos adjustable timing stator 

380 jets

air box elimition kit running one big pod 

tors elimintion kit 

that should be about it but i had rebuilt the carbs and the pistons it has a air fuel mixture screw but got rid of them they would make the bike heavily bog with them on so the issue is the bike turns on when warm cant be cold or cant turn on at all... and when its only revs up perfectly but hit first gear and it dies down okay i thought i can live with that but then it cant  hit power band period itll start acting like it just dont exist so it makes me change gear and same concept basically so now im stuck and wondering what it needs also none of these parts i installed the previous owner did so if u have any suggestions anything helps 

 

[luna2001xx]

7 minutes ago, luna2001xx said:

i had to make a post because i couldnt find my answer but i just got this banshee current mods atleast that ik of is that it has 

dual full fmf pipes 

vitos adjustable timing stator 

380 jets

air box elimition kit running one big pod 

tors elimintion kit 

that should be about it but i had rebuilt the carbs and the pistons it has a air fuel mixture screw but got rid of them they would make the bike heavily bog with them on so the issue is the bike turns on when warm cant be cold or cant turn on at all... and when its only revs up perfectly but hit first gear and it dies down okay i thought i can live with that but then it cant  hit power band period itll start acting like it just dont exist so it makes me change gear and same concept basically so now im stuck and wondering what it needs also none of these parts i installed the previous owner did so if u have any suggestions anything helps 

 

oh i also forgot it was recently rebuilt and cant go very fast id say only like 35mph only 

[SKEETER]

Are your main jets big enough? Jfc

[luna2001xx]

Just now, SKEETER said:

Are your main jets big enough? Jfc

i think so cause cause when i bought a rebuild kit the jet was way smaller id say 280 around there it was generic so dont really have a full estimate the real on is 380 for sure 

[SKEETER]

Needs 27.5 pilots,  and 310'ish  IMO

[luna2001xx]

3 hours ago, SKEETER said:

Needs 27.5 pilots,  and 310'ish  IMO

ill purchase them and see what happens cause its impossible to even turn on and its not even that hot here i say its about 70 

[sangheraent]

are your filters clean? try it without a filter on to test it. Also make sure you dont have any exhaust leaks. i have also seen it happen when 1 piston isnt firing so possible fouled plug. 

 

380 is a huge main. my ported banshee at sea level in cold canada is only running a 320 main. 

[locogato11283]

380 main jet is huge. I am guessing you need to be in the 300-310 range. 27.5 pilots.

[luna2001xx]

1 hour ago, sangheraent said:

are your filters clean? try it without a filter on to test it. Also make sure you dont have any exhaust leaks. i have also seen it happen when 1 piston isnt firing so possible fouled plug. 

 

380 is a huge main. my ported banshee at sea level in cold canada is only running a 320 main. 

im running open air box pod just one huge one and exhaust leaks i dont seem to have one and i thought something was off about the jetting too ill try to switch those out 

[luna2001xx]

16 minutes ago, locogato11283 said:

380 main jet is huge. I am guessing you need to be in the 300-310 range. 27.5 pilots.

ill probably try the 310 maybe that might be it and are the 27.5 in a stock rebuild kit or would i have to rebuy those off somewhere else ik i sound like a noob but its my first banshee dont know too much about it 

[kawa110]

9 hours ago, luna2001xx said:

ebuilt the carbs and the pistons it has a air fuel mixture screw but got rid of them they would make the bike heavily bog

 

[gusto]

270-290 main

30 pilot

 

obviously your main is your problem

[luna2001xx]

Just now, gusto said:

270-290 main

30 pilot

 

obviously your main is your problem

alright ill try that out man ima taking notes of all that you think thatll make me hit my power band? cause havent been able to just basically revs out and thats the end of it 

[gusto]

Yep, I’d be surprised if your stock stroke stock cylinder main jet is over 300. If you have fmf fattys they like a bigger pilot like a 30, but I would def buy 27.5 also. Set your slide mid way and adjust from there.

report back

[gusto]

Also check the Toomey website for jetting advice, there’s great info