question about bore size

[678fastblaster]

if a cylinder is bored over 68mm is that to much and will it overheat fast?

 

[calcium12]

umm.. do you mean 0.60 or 60 mm ?? 60mm is HUGE

 

[calcium12]

if a cylinder is bored over 68mm is that to much and will it overheat fast?

only bore when you have to...it doesnt give you a huge increase in power...you can do other things for the money

 

[678fastblaster]

no cause im about to buy this cylinder from this guy and the cylinder size is 68mm and i was wondering if that is to much and it overheat fast from it being to thin

 

[calcium12]

idk what the stock is...but yes it could overheat

 

[678fastblaster]

damn it man i need a top end so i can get it running agian

 

[shawnsadler]

66mm is stock... i currently run 67.5mm and it's fine..
68mm is the biggest i would go on a 200cc topend...
if you get it resleeved for a 240 kit it should be like 72mm i think...

 

[678fastblaster]

so 68mm should be fine? cause im trying to rebuild it as fast as i can

 

[shawnsadler]

yes.. MAKE SURE YOU FOLLOW THE BREAK IN PROCESS... i just rebuilt my old cylinder and didn't follow them and now i have my 67.5 and it runs great... get a good piston for it...

 

[678fastblaster]

thanks man for all of your help

 

[shawnsadler]

yep.. feel free to ask anything anytime.. i've had my blaster since 92.. so i know about every bolt on it... if i can't help you there are a hundred others on here that can.. good luck and hope all goes well