Chainsaw Repair

   
+1 lots of potential there.  with a sleeve, think the possibility of lowering the exh roof would also be available for a torque style build.

On that and in reference to a removable cylinder like a Stihl it's normally done by cutting the cylinder base .I had thought about building a "slugged" partly blind end cylinder liner for the 125 Mac but changed my mind because it's a fairly  rare saw .All I wanted it to do was run as good as a stocker which it does .

Slugging a cylinder is making a tapered top open in the middle  removable spacer done on old John Deere two cylinders running "hot farm stock" to raise the compression but that is in no way connected with chainsaws .

There's lots of old ideas that have been around for decades most people never heard of from days high compession pistons were not even thought of yet .But then again a 50 year old farm tractor and a chainsaw engine really don't have much in common .