Perhaps you should first explain to some members like Larry what a snowmobile is and why indeed they are relevant. I have been promoting this tech for some time now (well over two years) on this sight only to be discounted by wackos like Larry and his downunder sidekick Aushole. BTW, that engine puts out 163 hp, not 155..... Having test-ridden a few sleds powered by this engine (with considerably more saddle time on the smaller 600 cc version), I can attest that it runs spot-on and pulls like a freight train. F**k V4s, bring on the DI two-strokes I say ! The touring guys can keep the V4s, they are smooth after all.......
BTW, the outer crank bearings are sealed (and run in special IsoFlex grease). Everthing else (including the guillotine in the 3-stage power valve) gets oil fed by an electronic oil pump (for ultra-precise calibration and dramatically reduced consumption). NO smoke, no smell, and better fuel consumption than a four-stroke. Two-smokes no more!