on cars a lot of work! never seen it done on bikes, but i'm sure its same. goodluck if you want to rebuild. But ebay for those parts? i dunno about that one. ebay only good on some things but engine components? cheap price, cheap material? know what i mean?!? **kaboom**

 

Thanks for all your advice riceboy. I posted an ad on craigslist for a used motor I got a reply from a guy with a motor that had electrical problems and has 36,000 miles on it for $250 I guess ill go check it out. hopefully ill be able to run a compression test and take a look at the oil and plugs

 

no prob. and goodluck w/ everything, hope you get it up and running!

 

Ya me too Ill let you guys know how it turns out

 

So go the new used engine yesterday it was in time and things were looking good till i checked the compression cylinder 4 has zero compression so Im guessing a bent or stuck valve if thats the case that works perfect for me I can just swap my head on that engine but will have to see what the damage is when I take the head off tonight Ill keep updating...

 

Ok so I figured out there is a stuck or bent valve I thinking gonna swap the head from my other motor on there my question is do I need to replace the piston in the picture below?

 

the only way to know is re-check the compression on the engine again. it should be around 178psi.

 

I figured the piston was bad and sinc its already out might aswell go through the engine to check for anymore damage so I started to take it apart and now I have the case split on that engine. This is my plan It seems like it will work but please anyone with knowledge on this chime in. I'm going to keep the whole bottom end of the "new" used engine besides the pistons reusing the rods from that engine then Im going to put the pistons and upper crank case on the bottom end of the new engine. Only thing I'm questioning is the wrist pins should I use the wrist pins from the motor in my bike or the new motor? or does it even matter? I'm just worried about the different ware on the parts.