Attention: TDR Forum Junkies 
TDR Magazine issue 51 has on page 153 an interesting note by Kevin Cameron about a prototype opposed piston 2 stroke cycle diesel engine putting out 325 HP at 2000 rpm and weighing only 270 lbs. The design reminded me of an elegant opposed piston marine diesel with a similar configuration made by the British firm Doxford. There is a nice sketch of that engine in the 1965 edition of the Diesel and Gas Engine Catalog, and if someone will tell me how, I will post a scanned image of it.
It has been my impression that Fairbanks Morse was unable to solve the problem of hot exhaust gas pyrolizing the lubricating oil that must coat the lands of the exhaust ports exposed by the exhaust side piston. I was once told that in locomotive engines this would cause build up of coke like chunks that would flake off periodically and cause grass fires along the right of way. The EMD (and Detroit Diesel) 2-stroke engines use poppet valves that do not require lubrication right where the hotest exhaust blast is.
Lou Klauder
It has been my impression that Fairbanks Morse was unable to solve the problem of hot exhaust gas pyrolizing the lubricating oil that must coat the lands of the exhaust ports exposed by the exhaust side piston. I was once told that in locomotive engines this would cause build up of coke like chunks that would flake off periodically and cause grass fires along the right of way. The EMD (and Detroit Diesel) 2-stroke engines use poppet valves that do not require lubrication right where the hotest exhaust blast is.
Lou Klauder
