MCCULLOCH The official McCulloch thread

[Al Smith]

I've only got one sleeved engine which is a Mac125 C .I made and fitted the cylinder using a Lisle precisian hone to factory specs using grade 50 cast iron .Which I might mention is the same alloy Harley Davidson used on iron cylinders . It's been so long ago I have forgotten exactly how the compression was on basically a new engine .Since then,maybe15 17 years I have not ran that saw enough to even seat in the piston rings .In this portion of Ohio it's seldom you find a tree large enough to put a load on that big old redwood slayer .Too danged heavy to cut fire wood with unless you are 25 years old which is half a century ago for me .This spring I hope to fire up all my 100 plus cc saws just to blow the cob webs out so to speak .

 

[Al Smith]

I do have an 805 Mac with an 850 cylinder I managed to cook just with a straight gasoline prime,my fault entirely .I think the cylinder might clean up and just need a piston .If so I have enough parts to built another 82 cc engine .Worst case would be a sleeve which I can aleady tell is much more complicated than a reed valve engine . I might add I kept the original 805 cylinder that the chrome failed .That engine was made during the situation when hard Rodesian chrome was in short supply .Which was also when the bumpers for GMC cars would rust off in about 4-5 years .