okay guys at this point i am frickin pissed off, i have been working on getting my piston in the head and it wont go in, i mean i bought a piston compressor that fitted but it had to much slack i had to go get a new one then it broke, like i am just soo fed up right now im ready to go nuts.
by now my frickin brand new piston is all scratched and dented up i hope that does not mess up the point of a new piston..
any ideas of how i can get it in or what the hell to do!!

 

I guess I'm not understanding the situation. If a piston is so large that it won't fit into the bore, how would the engine be able to run?

 

Did you mean a ring compression tool? If you do have the right piston, and the ring compressor is tight, you should be able to tap it in with the handle of a hammer or a block of wood. However, take the rings off and make sure the piston slides easily into the hole. Then report back.

 

Deej is right; don't force anything together. If it's "jammed" now, it will self-destruct in short order. (Patience, grasshopper.....)
Try a different type of ring compressor. Tighten to "snug," place over cylinder, and slide/tap gently tap with wooden or rubber-tipped hammer. DO NOT use a metal-faced hammer. Use a medium Scotch pad to lightly buff cylinder surfaces as needed.

 

good luck, keep us posted

 

as mentioned, verify that the bare piston will fit in the bore. Not sure how a ring compressor would break with a proper fitting piston and rings either. Let us know how it goes and good luck.

 

I've always used a plastic bottle cut down one side with a big jubilee clip as a ring compressor, but on singles you can just hold the rings by hand as you ease the piston in to the bore.

You need to check the rings in the bore off the piston anyway to check the ring end gap, so make sure that the naked piston fits. It should be snug, but not tight. Apply a little oil before trying it in the bore.

I have, very rarely, seen rings which have a zero end gap and these won't go in to the bore until a bit is filed off the ends. This how you set the correct end gap as well.

Rob