Greetings,

Ijust purchased a n.i.b. OS.61 SF ring engine that has never been run (ran?) Ihave always had ABC engines and this is my first ringed engine. The engine turns over fine, is in great shape, etc. Idisassembled to verify the "no runtime", and oiled it to make sure everything turns over smoothly. It is obvious this has never run, including break-in. What Ido notice when I install the glow plug is there seems to be very little, almost no compression. Is this normal on a ringed engine? Perhaps the ring needs to seat with a run-in? I did not remove the piston/liner assembly as this is obviously new with the rest of the engine. Before Ifire this up, I wanted to check on this. My ABC version of the .61 SF is an awesome and reliable engine with plenty of compression.

Appreciate any feedback.