| Re: Restart a 403 [message #324610 is a reply to message #324606] |
Wed, 04 October 2017 13:18  |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
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JohnL455 wrote on Wed, 04 October 2017 11:40None of this addresses the cam lobes and lifter faces. Cranking slowly is the worst thing as no oil gets slung from the crank up to those surfaces and you are dry metal to metal. Using a drill on oil pump does not get that accomplished either unless it runs down from upper valve train on those lifters allowing it. The best and easiest way is to buy several gallons of oil, fill it till it comes out the breather you removed, drain it, put 5 qts back in and go. Crazy, but beats wrecking cam.
John,
While your fear is not unfounded, it is a very well thought. As it happens, a lot of the lubrication of the cam lobes (for a Detroit V engine) comes from oil running down the cam followers (lifters/lash adjusters. The cam followers are always on a primary oil feed line. As it happens, in Olds engines it has to go to the front of the crankcase and come back. That is not a lot different than many others. This is why I always required that lube oil pressure on an new (I mean really new, like the prototypes of a new family) be maintained for at least two full minutes at pressure before the engine was cranked. Trust me, the follower fit in the crankcase is not so good that it won't droll oil down to the cam, but it does take a while to get there.
You can do this with the oil pump, but we usually used a primer which is nothing but an air over oil can and fittings to couple to the engine lube oil gallery. We would put oil pressure on the engine for that two minutes and then always pull the engine through 2 (I really mean 2 - 720°) before anything else was done.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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