How do I know if I need a new cylinder/bore

[Brenden Duso]

I have an 02 blaster that I bought blown up , I’m pretty good with my two strokes as I’ve done a good bit of rebuilding and have a few 2 smokers I ride frequently , the only thing I haven’t done is had to replace a cylinder but by the looks of the one I have here I think I may have to or bore it , what’s the best way to tell if the cylinder is out of wack or no good ?

 

[speedyslyder]

depends what bore the cylinder is at?
need to measure the bore digital calipers is the cheapest way but.
you need to have a qualified shop look at it.
bore gauge out of round taper ect.
IF you want it done right contact http://www.kenoconnorracing.com/
stock blaster cylinder is 66mm.

 

[speedyslyder]

And don't buy a chinese cylinder kit offline....
it wont work....
needs to be oem cylinder or vito's/airsal ECT

 

[Larry's Shee]

Pics?
Max bore is 68.25 IIRC
Only bore enough to clean it up. Nothing gained by going to Max bore.