whan are the pros and cons of a 330 and 310 big bore kit

[mudrat]

what are the pros and cons of a 310 kit over a 330 kit

[drag lt guy]

330 is gonna make a considerable more amount of power is what I've heard.

[socket17]

altho the 330 puts out more power.. its puts more stress on the lower end.. drive train etc..

[mudrat]

have you herd any thing bad about the bolt on 330 kit from esr

[SandGeek]

Pros: Bottom line, Torque. You can bog it more, shift it less. Its a little more forgiving to ride, there is a much broader sweet spot. Dare I say almost 4 strokish.

Cons: The initial set up is expensive to do right. You have to be thorough. Bigger carb, the right pipe, porting to really feel its potential. Expect to pay a little more for pistons, not bad but still more.

Outside of cost, there are not a lot of cons. A well ported 330 on race juice is not going to produce enough power to do harm to the rest of the bike so everything should still be reliable.

If your not having a reputable builder do it, make sure you have someone knowledgable over seeing your project. If everything is matched up it will be a huge improvement. There is nothing worse then throwing a bunch of money at something and not have it just right.

My 2 cents
sg

[socket17]

250rrunner i think had the 330 kit on his r and that thing walked all over banshees.. ported banshee hell even a zilla with a street bike motor.. those kits do make some really good power.

[mudrat]

what about the 310 kit

[trx]

will it depends what u do on your 250r

if u like hillshooting and killing banshees
get a 330r kit


if u want very good playing power for everything and still want to hit thows high rpms get the 310r kit