Maintenance & Technical > KX500 Original

Is there any difference between the engine in an 87 kx500 and a 98 500?

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liilpa09:
Well...I really messed up this time. I somehow managed to crack off a piece of the casing when OVER-tightening my oil drain bolt!!! :cry: the chip/crack is on the left side casing and as a result the bike leaks oil. i can't believe i did this.
Anyway, a new crankcase (they only sell them in sets) is about $450! so, i was just thinking of buying a new engine instead and keeping the one i have now as a spare and just putting the new engine in. There's one on ebay but is an 87. Just wondering if there are any differences, OR if anyone has an engine they're looking to sell please let me know ASAP.
my email:
liilpa09@aol.com

hangtime:
I'm not sure if they are different but here is a "buy it now" that seems like the answer. http://cgi.ebay.com/ebaymotors/KX500-KAWASAKI-1999-KX-500-99-ENGINE-CASE-RH_W0QQcmdZViewItemQQcategoryZ35595QQihZ011QQitemZ320045401050QQtcZphoto

Paul:
They sell them in sets because they are a machined matching set.

Johnniespeed:
liilpa09 ,why not disassemble the engine and bring the left case to the best welder in town? I am guessing the price of gaskets and welding will be a fraction of the price of a used motor.  Or if the crack is very small, you could try retapping the hole to a larger thread size and use a larger aluminum sealing washer, with the hope of the larger washer will cover over the crack.  And on a last resort the crack could be grooved with a die grinder and jb weld epoxy applied to the crack. You would be amazed how well JB weld sticks to a rough clean surface.
  Any way you choose, I hope you get it up and running soon. Let us know how it works out. Oh and by the way, I have found my local Acura dealer has a great selection of aluminum sealing washers from small to large, I use them all over my Isetta.   John

kx666:
do you have pics? i dont see why it couldnt be welded, there are rods out there for welding metals trditonaly thought to not be weldable (muggy weld is one brand i have used, very user friendly and turnedout awsoem). if the threds are badly damaged you could always use a heli-coil.
i hope this helps,\
~steve

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