Maintenance & Technical > KX500 Original
Boring the kx500
umberto:
My bike is at 88 mm, which was done when Millennium Technologies re-sleeved my cylinder. They put in a LA sleeve and then bored it to 88 mm to fit the Wossner piston I already had. I purchased my running 1988 engine off eBay, and it came with a cylinder that was sleeved with a 1989 and up sleeve and had no KIPS valves at all. I purchased another head with KIPS valves and it was already sleeved and bored to 88 mm, but it was worn out. I only rode the stock bore 1988/1989 sleeve head a little bit before redoing he engine, and I don't remember a ton of difference in vibration between the stock bore head and the 88 mm head. My bottom end was done when I bought the motor off eBay, and it looks to be welded and balanced, so I may not be the best person to comment on vibration. When the carb is set up correctly, it really rips.
ninja:
--- Quote from: sugilite on February 13, 2016, 09:31:23 AM ---... worth the extra expense of getting a cylinder re-plated in my opinion. 8>)
--- End quote ---
Yup, stock bore & re-plate recently on the last conventional fork '89 :evil:
Foxx4Beaver:
--- Quote from: sugilite on February 13, 2016, 09:31:23 AM ---I "sleeved" mine out to about 530cc and really regretted it. It never made as much power as the standard one and noticibly loses power as it gets hot. I'm putting mine back to standard as a result - worth the extra expense of getting a cylinder re-plated in my opinion. :-)
--- End quote ---
who did the work?
mine's not sleeved...and makes considerably more power than the standard squared motor, with the way I had Pinnsonault set it up.
sandblaster:
--- Quote from: Motorrad on February 13, 2016, 06:25:45 AM ---91mm bore on my bike.
--- End quote ---
Mmmmmm.... Special :-P
Tim short:
Thanks for the responses
do i need to do anything to the head if i put a 87mm piston in ?
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