WANTED: Top end rebuild kit

98% sure i need to rebuild the entire top end of my 81 xj50 Maxim. need valves (maybe springs and lifters), gaskets, rings. not getting compression over 100psi on 3 out of 4. #3 is at 70psi, 1 is at 80psi, 2 is at 90. 4 is 125lbs. way too low, correct? 25500 miles, the pipes are bluing at the the head from excessive heat. lame. anyway, would like to buy a kit NOS or OEM, or used parts that include everything i need. pm me if you have what i need.

 

hey i have a head from a 82 xj550 maxim with 9k miles on it. it has all the valves and springs still in it. the bike ran great when i pulled them off no problems with it at all i dont know if this is wat ur after but ill sell the hole head to you for cheap

 

What size Maxim?

I have a xj750 top end I could be talked out of. The cylinders have been bored with new Yamaha piston kits to match, all gaskets except for the base gasket (ripped it). Valves are reseated with new stem seals; cams are used but look great. If interested I can get you pictures and more details. It won't be cheap but it will be a lot less then buying the parts new from the dealer (I still have the receipt from the parts and work).

 

BUMP

do the parts the previous people mentioned fit an 81 xj650 Maxim

 

What makes you think you need rings? It may just be your head leaking compression your rings may be fine it could just be the head screwing things up. If i were you id pop it off and take a look youll know what you need to do once the heads off.

 

pull the head. relap the valves and get new valve seals..have you ever checked the valve clearances?