OZ_872 said:
With the 2-stroke the oil that provides lubrication for the cylinder is mixed with gas, therefore diluting the super slippery characteristic of synthetic oil so glazing of the cylinder isn't as much of an issue. On a 4-stroke however, the rings may not seat in and instead polish or glaze the cylinder walls. Cylinder wall glazing isn't a deposit left on the cylinder wall, but rather a displacement of cylinder-wall metal. This happens when the high spots of the cylinder wall crosshatch are not cut or worn off by the piston rings, but rather are polished and rolled over into the valleys or grooves of the crosshatch. This leaves a surface that oil adheres to poorly, against which the rings cannot seal well. Compression is lost and oil seeps past the rings causing oil consumption, and the only cure is to tear down the engine to physically restore the cylinder-wall finish by honing.
bravo-guy
New member
Put in the new rings, put the motor back together, pull the cord (or turn the key, haha) and put the hammers down! Mineral or Synthetic doesnt make a difference during break-in, when i put new rings in my Bravo, i put the motor back together, dropped it in, and went on, I didn't do anything to "properly" break in the new rings, but hey, it was a Bravo, a lil' old 250 single cylinder putting out 25hp, your talking about a high power 700 triple!!! Theres a bit of a difference, but personally i'd just pull the cord and go, dont worry about it all. My 2 cents.