The method that I have used on automotive engines is to take an old
distributor shaft with no cam gear on it. Remove the distributor from
the engine block, chuck the old shaft in a 1/2 drill, stick it down the
shaft hole until it engages the oil pump and spin away. I have been able
to develop full oil pressure on new engines that way. Would a similar
concept work on a magneto shaft hole?

Dave Hyde wrote:

David O wrote:

Lycoming's service instruction 1241c (still active) addresses the
subject of pre-oiling after overhaul,

Thanks to all - I have the service instruction, I was looking for
other ideas on pressurizing the system. Bought a sprayer today,
if it works I'll use it, if not I'll just cold-crank the engine.

Acro/tailwheel refresher starts tomorrow.

Dave 'one-armed paperhanger' Hyde


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Bruce A. Frank, Editor "Ford 3.8/4.2L Engine and V-6 STOL
Homebuilt Aircraft Newsletter"
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