I hate to be a spoil sport
but you guy are making a big deal out of getting these old flatties to power you carriers and trucks
They where installed in such, to power them from point A to B and there was never any big deal ( ger done)
they are what they are and they are not race engines
the mercury engine is the better because of the stroke but the 85 HP was alright in the trucks and carriers
When the military done a rebuild it was because the engine got tired
they took it out sent it back for new rings and bearings and kicked it out the door, very seldom a flatty needs a valve job other than lapping them in
and putting them back where they came out of
Now I am at 4 cents
