"Dave Hyde" wrote in message
...
Anyone got any suggestions on how to pre-oil
a Lyc. O-320 before its first run?

Dave 'it might just be a train' Hyde


We use a pre-oiler here. We adjust the airpressure to the oil-filled tank
to cruise pressure and run the pressure oil from a line on the tank to the
oil galley on the engine. Then we watch until the oil gauge shows the
pressure we want. Which is higher in a Lyc than in a Cont. But it seems to
me 30 psi should do it.

I know an engineer-restorer who has made his own pressurizer from a handheld
pump-type insecticide sprayer. He welded or soldered a screw-in fitting
onto its business end. I saw him get 20 pounds on an old Continental
before cranking it, which is fine.

I may have pressurised mine a little too much because I fouled my plugs.

For a new engine or newly rebuilt engine the manifest weight of authority
hereabouts is that you should pressurise with a pre-oiler before cranking
the engine.