Interesting thread, but SAITO (both FG36 and 20 GAS engines) have the connecting rod without needle bearings, The FG 36, does not have plain bronze bushing on connecting rod at piston side. Directly the aluminium with only one oil hole, and bronze bushing on crankshaft side. No wear on con-rod at 20:1 oil (break-in) or 33:1 (after break-in).
I'm testing a 140 glow engine converted to ignition, running petrol, and also no wear on bushings at 5% oil (motul 800) after 8 liters (maybe 2 gal. ?) . Performs awesome, starts at first-second flip, idle is low and steady, ...... The major problem was the muffler pressure tap, and melted tygon tube, until i replace by neoprene tube.
I've tested a perry gas pump, but at lower pressure level it pumps too much fuel. Also i've made some minors changes to the engine in order to lower compression ratio, needles adjust , enlarge the oil holes on connecting rod, etc.


Regards