Yes you have to hone it,.... honing the cylinder makes the cylinder walls somewhat rough so when the new rings break in they become seated to the cylinder walls. New rings are not perfectly round and need to be worn down to the shape of the cylinder walls which is caused all during the breakin process which is why the oil is usualy silverish after the first change. If you dont hone the cylinder your rings will not have a complete seal all the way around the cylindr walls causing loss of compression.
'03 400ex Kibblewhite valves and springs, 11:1, Stage 2, FMF.
'99 YZ 125 tricked out.
'93 Mustang GT Convertible
'57 Buick Special on air with 20's
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