Maintenance & Technical > KX500 Original

Help needed again, KIPS.

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IcemanK5:
I was checking the KIPs set up on the 90 KX500.
When I pulled the cap off the rod that open and closes the exhaust valves was loose. Looks like the srew that holds the assem. together had come loose. The rod was loose in it's housing.
With it being loose I think that the right side valve may have rotated out of sync.
The bike has good powe, but you dont feel the power jump from the power valves.
I did check to make sure that the rod was working with the motor running, checked out fine.
I know there is a window in the head to veiw the power valves and that it is hard to get to behind the fram of the bike.

Question:
If I where to pull the motor and look into the veiw port can the valves be put back into sync. without pulling the head???

Also can a head on a 90 be bored out for a new piston??

Thanks for your help.

Kurt

kaw rider:
take some pictures and post them o, here so we can see if any parts are missing.

dave916:
remove the exhaust , with the exhaust off look up the exhaust port with a small torch to check the valves, manually move your kips rod by hand to see if all three valves are moving freely , the two outer valves will be in similar position if timing is correct [ when you pull the kips rod fully  the centre valve should raise and the two outer valve should expose the exhaust sub ports
if you have problem with valves the engine cylinder will have to be removed ,
you may be able to retime  the clutch side valve by removing the kips rod bush       

Friar-Tuck:
 Some of these may give you an Idea of how it should be put together.
 (Be advised the previous poster may be referencing a "Flashlight"  not a propane type "torch".)
http://s69.photobucket.com/albums/i75/Friar-Tuck/KX%20500/Kips%20Valve/

http://www.kxriders.com/coppermine/displayimage.php?album=259&pos=5

 Tuck\o/

Danger4u2:
Having bikes with low hours I have never totally taken apart a K5 motor, until today.  A few weeks ago I blew out one of the fork seals on my AF bike.  I've been saving for a re- valve and spring change for my weight and riding style.  I removed the forks and shock and as I stood there looking at the bike I decided to remove the motor.  I had talked to Stewart a few months back about "fresh'n'ing" the motor.  So today was the day.  Having Stewart give me the 101 on motor dismantle I feel I learned allot.

IcemanK5,
I would think if the KIPS valves are installed properly and they are not worn they can't get out of time.  If I'm wrong you guys can chime in.  I learned what I thought was an inspection port, I think your calling it a view port,  is a cover for the 2 bolts of the KIPS valve.  If we are talking about the same thing it's the plate with 2 bolts above the exhaust pipe hole.

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