Maintenance & Technical > KX500 Original
KX500 COMPRESSION LOSS
monster malibu:
I FINALLY GOT MY BIKE BACK TOGETHER!!!! Thanks for the dual ring piston swap info guys, the new wiseco fit perfectly. I got a Clymer repair manual for my bike and got the KIPS exhaust valves in the right position for reassembly and it fired right up. I got up today excited to ride and it's raining, I AM NOT HAPPY!!! Thanks again guys, Bob.
Johnniespeed:
Hi MM
You mentioned that the previous owner said to rejet when adding the Moose spacer. I added a spacer to mine, and did not change jet. The mixture did not change on mine, but what did happen is that the power seems to be moved to a lower RPM .
In my opinion the spacer did not cause your meltdown. I would however be real concerned about having the jetting right and about not having any intake boot or crank seal leaks. On a red bike of mine, I had piston meltdown after a corner broke off a reed.
I am hoping you will find the source of meltdown before you loose another piston.
John
monster malibu:
Do you think the melt down couldv'e been caused by a overheat problem? When I pulled the coolant line off the water pump to start the tear down, I only got about a half a cup of water/coolant to come out.
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