I Was Just Wondering.....

[Misfit138]

I was just wondering how I could tell if my motor has been bored & stroked.I was told the quad has been bored to a 440,but would like to know for sure.I have raced 450's & if I can't out run them I can run with them!What do u guys think?

[tri5ron]

pull the head, and mic the cylinder. that will tell you if it's bored or not.
once at that point, turn the engine by hand and put a mark at the bottom most and top most points of travel on the piston. measur this distance, and check it against your factory manual specs., this will tell you if it is stroked.

[Misfit138]

sounds good!Thanks alot!I'm not very smart on the motor part.