Maintenance & Technical > KX500 Original
Project "I needed to clean the air filter so I blew the motor"
Motorrad:
85.97mm bore
.017" ring end gap
.040" custom base gasket
sandblaster:
Isn't that ring end gap a little large?
Motorrad:
--- Quote from: sandblaster on December 27, 2013, 01:28:45 PM ---Isn't that ring end gap a little large?
--- End quote ---
larger than Id like.
but your hard pressed to get any tighter with off the shelf rings and pistons. hell last JunkCO (wiseco) piston I had around, specd in at .025"
the only way I have been able to get tighter than .017 is custom hand fit rings. which only my bike see;s as its alot of work
Motorrad:
now someone ask the garage gremlin where he put the base and head nuts.
Motorrad:
in a cut off top coke can. good place gremlin.
.0140" in the hole deck hight.
which will bump the compression up a smidge to 13:1 even.
and drop the squish clearance down to around .044"
all "ISH" based off the old numbers on the motor.
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