got this ns3 form a buddy. i just wanted to know what you guys thought about it. i am really in ? if this is actually an ns3 piston and sleeve. i am really kinda dissapointed and wouldnt want to think my buddy would screw me.

sleeve#1

sleeve#2

sleeve #3

sleeve# 4

crank

bottom of sleeve has some marks on it that i believe caused some scoring on the piston.

looks like a modded rs12 to me, worn out i must say..

piston. pretty messed up. good deal? i am thinking, no.

oops, here is the pic.

With those scratches on the side of the piston the engine will lose some compression.. The engine I "blew" today was worn, but not as this one I'm afraid I'll have to say..

i sanded the scratches out pretty good with some 1000 grit. the guy said he will get it pinched if it needs it. i am going to see if i can get it to run. if not i will go that route. either way it will need to be pinched pretty soon.

It's an NS12s3....You can tell by the crank and piston. Don't squeeze it until it really needs it.

how much did you pay also what is outside dim of crank if 11.0 it is s3 if 11.5 it is ns I hope you didn't give much more than $50 it looks to be in bad shape.

oh I justed look again the carb bolt tells it is a ns