It's been done before. The nice way to do it is to use half the
cylinders as an engine and half for compression. You have to have a
different grind cam or do the reed valves thing.

Jason D. wrote:
I was wondering if this would work this way:

Take a 4 stroke 2 cylinder or 3 cylinder (under 1L) and put modified
head with reed valves and use external oil pump to pressurize engine's
oil passages for lubing purposes. Spin engine say 200 to 300 rpm for
noise control via series of pulleys and standard 3/4 or 1 hp motor.
Yes, the modified motor will have flywheel to dampen shocks to keep
lights less flickery. Only to pressurize air tank to 100PSI, still
one stage through.

This is exactly what I can do when this oppority comes up and easier
to rebuild with standard parts instead of trying to deal with unusual
stuff.

Lets bounce off ideas & comments.

Merry xmas & Cheers,

Wizard