Maintenance & Technical > KX500 Original

87 KX500 piston swap

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monster malibu:
I need to swap the piston and rings in my 87 KX500 and was wondering if I can do the swap in the bike. I have roughly 2.5-3" of clearance between the head and the frame.  If I pull the head off, will I have enough room to get the cylinder off if I get the piston to it's lowest point? Is the exhaust valve bolted in the head, or will it just fall out when I lift the head off?  Sorry about all the questions guys, I'm just new to tearing bikes apart.

don46:
I don't know about an 87, but on the 89 you could change the piston with out pulling the motor. I would assume you could on the 87 as well, I've never had to pull a motor to change the piston.

BDI:
I have never seen a dirt bike that you could not service the top end In the bike. And If I had one I would burn It, twice. :x

monster malibu:
I was hoping I could do the swap in the bike. Is the exhaust valve bolted in the head?  Thanks for the quick replies guys.

Danger4u2:
This is a very good read, lots of info.
http://www.hallbergs.net/kx500/#41

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