Bigger carb, bigger engine

[hurtank]

so a local shop owner, also a good mate of myne is fitting a new engine in my Pitbike. i have a little 50cc pitbike that i brought a few years ago. and recently i managed to get a valve fire out so hard the adjuster nut managed to find its way to my camshaft. or something like that :S

Anyways. he said to me he wants to put a 120CC engine in for the same price as fixing the valve and stuff +my 20% discount (i saved his bike at motorcross and he doesnt think hes made it up to me) so with the 120cc engine he reckons it will do around 55, he said with a bigger carb and my new performance exhaust it should pick up around 65. which would be brilliant out on the dirt.

I am confused though. can anyone explain to me how a bigger carb could help with speed? at the moment the carb is really small which i know about. but i still dont get how a bigger carb will do anything but ruin my pitbikes fuel efficiency

[Colin the Bear]

The carb for a 50 will supply enough fuel mixture for a 50. A 120 needs more. A larger engine is not the way to go for fuel efficiency but it is the way to go for performance. Performance comes at a price

Edited September 13, 2009 by Colin the Bear

[hurtank]

thanks collin the beer