250 Barrel Conversion To 300

[crusoe123]

Hi,

So what is the score, can I just simply bore out a 250 barrel and replate.

I know why don't I buy a 300 bike or barrel, thought I would get in first.

How about the ports are they in the same position on all three capacities. 250, 280 and 300.

Thanks in advance.

[baldilocks]

No you need a 300 barrel

[wright4d]

I've just done the opposite to a 2011 300 Gas Gas and just changed barrel, piston and head insert it's really straight forward so going your way should be no problem

[crusoe123]

Have you sold the 300 barrel?

Thanks

[shercoben12]

yes you have to use the correct size barrel piston etc. i think gasgas uk do a cylinder exchange service. where you gave them your old parts and pay abit and you get the correct size or whatever one you wanted.  give gguk a call and you will get an answer.

or alternatively give R and T a call (south yorkshire) , they have it on their website as doing it 

Edited August 12, 2015 by shercoben12

[wright4d]

No I still have it to put back to original state when I eventually sell it 

Have you sold the 300 barrel?

Thanks

 

[steve_earle]

It's cheaper to tune the 250 than buy a new barrel and piston. How much power do you want? You can make a 250 more lively than a standard 300 if needed.

[lineaway]

 Funny, he never even said what year!  Without knowing what he has you cannot give advice. A newer 250 runs very good.