Originally Posted by doyll
Oil at high pressure? 35-60 psi is definitely not high pressure.
Most internal combustion engines I've worked on (thousands of them) have rod bearing, crank shaft bearings, etc., and few of them are using needle bearings / roller bearings.
But please feel free to believe what you want.
And for the record 2 of my original TY-140 fans are bottom case fans. Oh!, and the TY-143 has ball bearings.
Ever worked on 2-strokes? Ever worked on any singles?
Thousands of engines? WHERE?