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post #1 of (permalink) Old 01-20-2004, 10:12 PM Thread Starter
 
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What should I expect when I prime my engine?

Just got my engine back together; it's still on the engine stand. When I prime my new high volume oil pump, should I expect to see oil squirting from my push rods/rocker holes with my valve cover removed?

If so, it's not happening. I did feel the increase in drag, after the oil started flowing, then let the drill run for several minutes straight.

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post #2 of (permalink) Old 01-20-2004, 10:41 PM
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Re: What should I expect when I prime my engine?

Never had the pleasure of a 258... but 304 and lots of Chevy in years gone by. I don't think I ever tryed to watch but always had oil under the valve covers when I stopped to look.

Are you turning the correct direction?

I would think the short answer is yes you should see oil.

Somebody jump in here!
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post #3 of (permalink) Old 01-20-2004, 10:55 PM Thread Starter
 
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Re: What should I expect when I prime my engine?

</font><blockquote><font class="small">In reply to:</font><hr />
Are you turning the correct direction?


[/ QUOTE ]

I sure hope so, same direction as dist rotation: clockwise.
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post #4 of (permalink) Old 01-21-2004, 07:58 AM
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Re: What should I expect when I prime my engine?

It's a long path from the pump to the rockers. After going through the filter, the oil enters the main galley that feeds the crank mains, cam bearings and lifters. The lifters actually pump the oil up the pushrods to the rocker arms. I guess that eventually the pump could get oil up there, but it would take a long time.

I've heard of engine builders filling the pushrods with oil before putting them in the engine. I suspect thet most of it would drain out before the rocker arm got put on and tightened down, sealing the top. But who knows.

Anyway, don't be surprised if no oil gets to the top end until the engine runs for a minute or two. Just make sure that everything up there is well oiled before you start it up.
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post #5 of (permalink) Old 01-21-2004, 02:45 PM
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Re: What should I expect when I prime my engine?

Ditto...I primed my 304 for about 1 minute before it pressured up (60# on the gauge)...about 5 minutes under pressure....and barely had trickle out of the top end... [img]images/graemlins/smirk.gif[/img]

I hosed everything down good with a oilcan full of 30W prior to firing it up though. While I still have some lifter noise (yeah, who has an AMC V8 that doesn't), it's been going strong with no problems to date. It sure is a relief to see the gauge spike up using a drill.
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post #6 of (permalink) Old 01-21-2004, 11:46 PM
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Re: What should I expect when I prime my engine?

Guess that why the old farts that I learned from always told me to also rotate the crank slowly while priming the pump. It's nearly a two man job.. but prime a little crank a little... prime a little..... nevermind

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