Thread: PRE-OILING problem

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Hi again everyone.

Thank you thus far for all your replys to my questions.
Well since my last post, I went ahead and installed a new "stock" pump on my 327. Before running the engine, I attempted to pre-oil the valve train, but only got one side to oil. After rotating the motor a few times I tried again with the same results.
Could there be some hidden blockage that prevents oil to one side of the lifter galley? If so, is it serious? Hopefully the engine's idle will be enough pressure to sqeeze out any gunk that may have been hidden and impossible to get at. I want to be sure the motor gets lubbed right away at start up.
Also, I don't plan to run the motor at 2000 rpm at start up as the cam and lifters have a few miles on them already. Any body ran into this before?

Jerry

It is very common in small blocks. Just give the tops of the valves/rocker arms and pushrod seats a squirt from an oil can and fire it up. You will more oil squirting around than you know what to do with, after about three-four minutes of running.

Hi Denny,

At least 30 sec. to one full minute, more than long enough I thought.

Jerry

Well, I tried using the drill motor for quite a while and still no oil on one side, but I wonder if a slight blockage will just cause the oil to find the easiest way, thus going to one valvetrain that is not slightly blocked.
Also, I am using a 1/2 inch drill, and Don't know if it has to hi speed, but I am sure it is much slower turnning than say, a normal idle?

Jerry

Richard, any ideas on why one side is not oiling?

Denny,

all 3 galley plugs have not been touched, and are in place. Maybe on initial satrt up, I'll shut it down, then pop the v/cover a take look.Don't know what else to do otherwise.

Jerry

I'll give it a whirl , thanks

Jerry

To get oil to the right side galley, you must use a priming tool with a disturbutor housing. If you look at the housing, you'll see that at the bottom the right side oil galley is part of the distributor. If the housing isn't used, it creates a large leak. Just take an old distributor, grind off the teeth of the gear, remove the mech. advance and grind the upper shaft to fit your drill. Instant primer.
By the way, if you look at a Chevrolet/GM distributor gear, there is a small drilled hole to the side of the gear next to the roll-pin hole. This hole is the index for the distributor rotor. For the ignition timming to be correct, this hole must line up with the rotor.

If you look at the disrtubutor gear itself, and the relationship of the gear teeth to the rollpin, you'll see that the rollpin hole is in a different location in relationship to the gear teeth. Many years ago (in my early days), I worked on a '65 Malibu SBC that would missfire and stumble. The end result was the gear was miss-indexed. On a HEI ditributor, the magnetic pole piece will be out of time, causing weak spark (primary ignition breakdown). Many years ago we ran a test on a Sun distributor machine and found that the indexing was important on primary ignition (the actual results as to spark are long time forgoten - believe it delt with reserve spark/ gap in distributor causing missfire between cylinders). We always looked for the index mark whenever disassembling a distrubutor and all GM's had the mark (if they didn't, the rollpin was off-center so the gear would go on one way ). I always figured the General wouldn't havve spent the money putting the index mark on the gear if it wasn't needed, so why fight it.

I rebuilt a HEI distibutor last year and honostly never noticed an index mark.Completely tore it down and replaced everything I could. Just put #1 tdc, eyeballed the rotor in place,stabbed it and then just made adjustments on the timing. Interesting though.

And I thought I was complicated.

Not talking about you Denny

Originally posted by DennyW
That small 3/16" or less index mark is what they use to originally line up the reluctor, pole piece, pickup peak to the proper relation to each cylinder. Then, they drill the gear and shaft to hold it there. If you take it a part for repair, the roll pin is drilled off set, so it will only fit the right way. What they had at that time was someone not lining them up properly. I believe I have a tech bulletin somewhere on that explanning the fix. Man, I can't type right, hahaha.

denny it will go back the wrong way, trust me it will. i lost a 25.00 bet on that one time

Hehe ran right on down to harbor freight and got me 1 of them pre oilers !!!!3 buckaroos and stuck it right on in place ,hit that baby on high and woohoo we had struck oil,or should I say we got struck with oil..DONT FORGET to put the oil sending unit in that little hole in the back .I think it may have put a little oil in orbit I am not sure but there was about 4or5 quarts in her now theres not enuff to get prime started again and I need a new bag of shop rags and I am not sure if I will ever get paint to stick to the drywall now either!!!!

Originally posted by 350
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i think i agree.