upgrading too 28s

[dusty_v141]

Hey peps Just bought some mikuni 28mms should i have too go up in jets or will they be the same.

[locogato11283]

if they are anything like keihins then they will prolly stay about the same.

[dusty_v141]

ok man thanks. they will be here tomorrow i think so ill put them on friday. i cant wait! i got my twist throttal yesterday and i just piad a guy for some yfz 450 shocks with the dual spring on them.

[AKheathen]

i would start 2 sizes higher. and about the twist throttle- it's been nice knowing ya, lol

[dusty_v141]

lol ill be ok grew up on dirt bikes. i own a motocross track and its about 1.2 miles long. when i start riding i can go a whole lap and then my thumb is killing me. after that i can go half a lap before it starts hurting again. but i can jump on a bike and im fine.

[smokin 421]

i love my twist throttle had one for 9 years and im still running it on my 421

[springer]

i went from stock up to 34's and actually had to go down a few sizes.

[vulvafan537240]

i hated the twist throttle that came on my banshee when i bought it. that was one of the first things i changed. i saw my life flash before my eyes a few times lol. but ive never ridden bikes either so....

[AKheathen]

well, remember that it's not just the bore size that changes it. when you go from stock carbs with the emultion tube setup to an aftermarket carb with the needle jet/airjet. the draw on the jet changes a bit, too. as well as slide design cutout pitch, and bore design

[dusty_v141]

well i got the 28s put on this past weekend and they rock!!! i had too go up from a 310 too a 340 or 330 when it gets a little warmer. i also have 60 pilots in them and the needle in the middle clip. they opened my porting up alot. my throttle respons was also greatly improved. i reckomend upgrading from stock as soon as you can aford it. thanks for all the help guys.