Question about 2011 kawasaki KLX 250
Recently some 500 miles ago i replaced the cylinder but after riding some miles Piston skirt touched the cylinder from both side. crosshatch isn't visible in skirt area of cylinder only.Pistons rings haven't seated yet. how can it be possible while all manufacturers give proper clearances between Piston and cylinder. i never overheated or abused this motorcycle. in this case what should i do ?? ride the bike till rings seating, is there any scope for rings seating after this incident or open the cylinder and hone it with oversize rings ??
If it is a water cooled engine the ring gap at the bottom of the cylinder should be around .010"
rings have to be installed the correct way up or the compression doesn't help push the rings against the cylinder walls for effective seal
piston skirts will touch the cylinder walls as the pressure pushes the piston to one side as it pushes the piston back down the cylinder
I have to ask did you put an old piston back in the new cylinder
was the new cylinder standard size or over size
what was the ring gap before you fitted them to the piston
did you use new rings or the old ones --maximum rin gap is .025"
rings don't wear in , just wear out
why did you replace the cylinder in the first place
was it because of low compression or taper wear
as silly as all this seams it is all very relevant to your question
Posted on Mar 11, 2016
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Posted on Jan 02, 2017
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