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310 qs's verse just 250
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Posted by: beobe99

Hey guys whats up.. I just bought another 250r project and received acouple top ends for it... 2 250cc and one 310 non-power valve. (I have carbs for both).. I will be doing mostly trials and maybe hare scrambles..

310 non-pv pro-cross with MP porting/polish... I imagine it feels real nice, and god dam the cylnder looks better then the 250.. BUT would it be to much for just trails/hares.. (dont worry i can ride and handle it but would rather not have to "take it easy" threw the trails) Would rather not waste a nice *** 310 on how i ride.. the reason I say waste is because I could clearly sell the 310 and use the money for others upgrades or maybe just go 265... (plus the 310 needs a hone or mild bore) and the 250's are ready to go...

310 worth it? is the TQ much better low end? should i sell it? anyone interested hehe!?

Also any good recomendations for bore/hone/piston/and carb pre-jetting companies if i keep this?

Thanks guys, and sorry if I seem oblivious here. Ive built 3 R's and never had to mess with building the engine or choosing engine size. I always had a complete engine or just needed to assemble top end.

Posted by: beobe99

some pics

Posted by: beobe99

the sleeve (I would think its just needs a hone)

Posted by: 250Renvy

I'd be interested in the cylinder. How much are you thinking? Do you need any parts for trade?

Posted by: beobe99

No clue on price yet, I guess I'll take offers.. IF i do sell it you would get the piston also (not really usfull but whatever.. also if the exhuast flange fits my stock 250 cylinder Id be keeping that.

quote:
Originally posted by 250Renvy
I'd be interested in the cylinder. How much are you thinking? Do you need any parts for trade?

Posted by: cdrookie

def keep the 310. don't know who MP is, but check the size and if it can be bored out do it. a hone job won't be enough. any local machine shop can bore it out, it's not a big deal. but go with c-leigh if you want an "expert". he can also check the porting too see what type it is and report if necessary.

Posted by: beobe99

Thanks cdrookie, you helped me out with both posts..