Mr. Lister and others that have access to the original engines .....engines that now, thanks to Mr. Lister and his excellent pictures, is something I lust over daily...
Us on this side of the pond with rather crude Indian copies have a few questions about how the original designers handled certain problems. Are ya'll (Southern US for 'you folks') up for a few questions to help us out?
In case that answer is 'sho nuff' or something similar I'll pose a few that has me wondering ....
Is the oiling system a 'boost oil to gravity feed holes' system, or is oil actually pressurized into the bearings?
(My lathe is a Jap copy of a Clausing-Colchester and feeds all bearings by tiny copper tubes that drizzle oil into them by gravity.)
Is there oil pumped to the valve train? If so how does it drain back?
It looks like the oil pump is mounted externally and operated by a plunger opposite the fuel pump tappet.....how is that oil pump tappet sealed against oil leakage?
.....or, is the oil pump internal and that's just a manifold I see in the pics?
What main bearings are in the originals? TRBs or babbit or bronze, or?
Is there a difference in the main bearings between the spoked flywheel engine and the heavier genset flywheels? Is the bottom end the same or re-inforced in some way?
Can you tell what material the pinion gear is made of?
Are the valve guides bushed in any way or plain cast iron?
Are you tired of questions yet?

Pictures of such things as valve trains, bottom ends, cams and hardware would be much appreciated, as time permits.
I think it would be great to closely compare the two engines to see what shortcuts were taken by the frugal Indians....and what can be restored...... without a foundry. The castings in those original engines are PERFECT!! Look at those flywheels!. LOOK at the counterweight on the flywheel. Mine is three times that size...I wonder why?
Thanks in advance..it's terrific to have access to international knowledge and I don't even have TV!!