I have a Allis WD45 1955 that I have had for 15 years and use it about 20 hours a year. The machine runs real good and strong. It does smoke a bit when cold but tends to go away when warmed up.
Today I ran a compression check on all engine cylinders and got like 145 PSI out of every one. That is way more than what I would have expected. Does that sound right for wd45?