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Priming Oil pump question

Explorer

Bronco Guru
Joined
Mar 2, 2008
Messages
4,390
Loc.
Raphine, Virginia
Getting my new engine ready to fire up so filled her up with 10w-30w oil and breakin additive. Priming pump with 1/2" drill and getting 80psi on mechanical gauge. I've done this before, but never noticed the oil pressure before. Of course it's the first time I've temporary mounted my gauges under the hood so I could watch everything. Is this normal? I didn't think just a drill would make that much pressure.
 

Viperwolf1

Contributor
electron whisperer
Joined
Aug 23, 2007
Messages
24,346
Sounds ok to me. 400 rpm drill speed is the same as 800 rpm crankshaft speed.
 

bmc69

Contributor
Bronco Guru
Joined
Jun 11, 2004
Messages
11,915
And remember..well over half of the oil 'consumers' are the roating journal bearings on cam and crank. They aren't rotating..they aren't consuming much...so its easy to build oil pressure when primming.
 
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