Maintenance & Technical > KX500 Original

Steel-Sleeved Bore

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sandblaster:

--- Quote from: Hillclimb#42 on November 24, 2010, 02:38:38 AM ---Most people generally put a sleeve in because its cheaper. Most cylinders can be repaired and re-nikosil plated, but costs more. Nikosil lasts longer and disipates heat better. Using nikosil also has the advantage of using stock piston and rebuild kits. Hondas use sleeves and can be bored to correct imperfections, but have the over bore piston sizes readily available. Not sure how you get over bore Kawi pistons. I'm sure its being done, and would be what you need, if its already on the second set of piston and rings in that sleeve. The sleeve vs nikosil has been discussed at length on here in the past. ( Search function) From what I remember, the nikosil cylinders let you have a tighter tolerance between piston and cylinder, where the sleeved cylinders need a little more room for expansion/contraction, which should be fine as far as seizures, as long as the shop goes by the proper clearances.

--- End quote ---

+1
We disassemble several dirt bikes every week.
From what I have seen, plated cylinders last longer and provide better cooling.
It is common to see scuffed up cylinders and pistons in a sleeved application, whereas plated cylinders have a much smaller incident of galling and scuffing.

Kawasakifreak:
Thanks for the advice folks - that's made up my mind - think I'll pass on this example !!  :-o

seff23:
I've used a sleeved cylinder before and never had a problem. if the rest of the bike looks good and the price is right I'd buy it, but that's me

kaw rider:
poor cooling system and iron sleeve= alot of piston clearance.
great cooling system and aluminum cylinder= very little piston clearance.
great cooling system and iron sleeve= alittle more piston clearance.

JohnJr:
Hello, Ihave an 2001 KX-5OO, I have the sleave in my bike with a Wiesco Std. piston,V-Force reeds, stock jetting, 40:1 Blenzoil Premix, to me it runs the same as a Nicasil cylinder, it was CHEAPER that way,Just let it warm up and you wont have any problems,YOU CAN WAIT FOR IT TO WARM UP A LITTLE BIT,just try to hold on to it!!!!Have fun My friend

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