Re: oil pump not priming
[Re: siggie30]
#974458
04/18/11 11:34 AM
04/18/11 11:34 AM
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Joined: Oct 2009
Posts: 118 Sarasota, Fl
siggie30
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I am still stumped. I am thinking that there may be gaskets for the pump, but I do not have any or recall seeing any. Is there in fact a gasket that seats between the pump and the cap, and is there an o-ring that seats on the shaft? If so, then this would be the culpret.
Also, to confirm, I have cup plugs installed under the cam retainer(X2). The internal plug by the oil pump drive, the 2 rear external plugs, the plug under the oil filter, and the cap plug under the rear main. If there are more than that then they are all in.
Last edited by siggie30; 04/18/11 11:37 AM.
I don't even have 1/2 lift, but the other 1/2 is nitroused.
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Re: oil pump not priming
[Re: siggie30]
#974459
04/18/11 01:41 PM
04/18/11 01:41 PM
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Joined: Jan 2003
Posts: 75,099 A Banana Republic near you.
JohnRR
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Quote:
I am still stumped. I am thinking that there may be gaskets for the pump, but I do not have any or recall seeing any. Is there in fact a gasket that seats between the pump and the cap, and is there an o-ring that seats on the shaft? If so, then this would be the culpret.
Also, to confirm, I have cup plugs installed under the cam retainer(X2). The internal plug by the oil pump drive, the 2 rear external plugs, the plug under the oil filter, and the cap plug under the rear main. If there are more than that then they are all in.
I don't remember the factory installing a gasket between the pump and the cap , but someone mentioned it above so I think the aftermarket deemed one necessary at some point , can't answer the o ring on the shaft either but that doesn't jog anything in my memory either .
It has to be on the pickup side, it must be pulling air which is why it will not prime. Maybe the pickup tube ofthe pump housing is cracked ? Did you have the pump in the oil during your bucket test ?
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Re: oil pump not priming
[Re: Challenger 1]
#974462
04/18/11 08:23 PM
04/18/11 08:23 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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Post it when you find it, inquiring minds want to know. I'm dying to hear what it was
live every 24 hour block of time like it's your last day on earth
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Re: oil pump not priming
[Re: siggie30]
#974463
04/19/11 03:30 AM
04/19/11 03:30 AM
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Joined: Aug 2003
Posts: 43,317 Bend,OR USA
Cab_Burge
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Quote:
I am still stumped. I am thinking that there may be gaskets for the pump, but I do not have any or recall seeing any. Is there in fact a gasket that seats between the pump and the cap, and is there an o-ring that seats on the shaft? If so, then this would be the culpret.
Also, to confirm, I have cup plugs installed under the cam retainer(X2). The internal plug by the oil pump drive, the 2 rear external plugs, the plug under the oil filter, and the cap plug under the rear main. If there are more than that then they are all in.
did you use a set of main studs or aftermarket main bolts If so look very closely at the pump to stud or bolt clearance They can, and do, hold the pump from seating onto the main cap, don't ask me how I know that
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: oil pump not priming
[Re: RapidRobert]
#974464
04/19/11 08:55 AM
04/19/11 08:55 AM
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Joined: Oct 2009
Posts: 118 Sarasota, Fl
siggie30
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Quote:
bypass mini cup plug not driven up high enough. good there? time to take a look at the pump/rear main cap/pickup
I am curious about this cup plug under the main. When I installed it, I basically installed it flush or slightly recessed. Gathering info about this, I learned that on Chevy engines, the plug is driven pretty deep. Someone here mentioned that there is a ridge to stop the plug at some point. How deep should it really be? And would this prevent oil flow?
Last edited by siggie30; 04/19/11 09:48 AM.
I don't even have 1/2 lift, but the other 1/2 is nitroused.
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Re: oil pump not priming
[Re: siggie30]
#974465
04/19/11 09:12 AM
04/19/11 09:12 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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want it here to divert oil out to the filter rather than it going straight up to the horizontle main gallery
live every 24 hour block of time like it's your last day on earth
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Re: oil pump not priming
[Re: RapidRobert]
#974466
04/19/11 09:33 AM
04/19/11 09:33 AM
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Joined: Oct 2009
Posts: 118 Sarasota, Fl
siggie30
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Is there a stop? Is this why it is not priming?
I don't even have 1/2 lift, but the other 1/2 is nitroused.
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Re: oil pump not priming
[Re: siggie30]
#974467
04/19/11 10:57 AM
04/19/11 10:57 AM
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Joined: Jan 2003
Posts: 75,099 A Banana Republic near you.
JohnRR
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Quote:
Is there a stop? Is this why it is not priming?
If that picture is accurate it sounds like you don't have the plug in far enough and the oil is not going past the main cap and the pump is just dumping the oil back into the pan thru relief valve It would appear .
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Re: oil pump not priming
[Re: scratchnfotraction]
#974470
04/19/11 06:56 PM
04/19/11 06:56 PM
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Joined: Oct 2009
Posts: 118 Sarasota, Fl
siggie30
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I took the cap off and started driving the cup plug in. There is a passage about 2" or so in. I have not finished assembly to check yet, but will post when I finish. Thanks guys.
Edit: Yep, there was a gusher from the top of the block after pressing the plug in.
Last edited by siggie30; 04/19/11 08:14 PM.
I don't even have 1/2 lift, but the other 1/2 is nitroused.
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Re: oil pump not priming
[Re: siggie30]
#974474
05/30/11 01:16 AM
05/30/11 01:16 AM
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Joined: Jan 2003
Posts: 3,719 Space Station #5
471Magnum
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Space Station #5
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I'm dealing with the same issue on my 360/410 right now. Poured in five quarts and it won't pressurize (turning clockwise)
Removed the oil filter and adapter and found it bone dry.
Stuck a rod down the sending unit hole and hit the plug right where it's supposed to be.
I double checked to make sure all galley plugs were installed when I got the block back, so I'm certain that's not the problem.
Reusing this pump from my 340. Looked brand new and worked fine in the old motor.
Running a Kevko pan and pickup. Pick-up depth is right where is supposed to be.
Looking like I need to drop the pan to see what's going on.
-Jim
I can fix it... my old man is a television repairman. He's got the ultimate set of tools... I can fix it.
Currently Mopar-less
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Re: oil pump not priming
[Re: Theorio1025]
#974476
05/30/11 03:36 PM
05/30/11 03:36 PM
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Joined: Jan 2003
Posts: 3,719 Space Station #5
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I think my problem might actually be with the priming shaft. It was made from a big block intermediate shaft and the diameter is not reduced at the base like it is on a SB shaft. It's not dropping into the pump drive.
I've got a couple SB shafts I can use to make a new one.
Stay tuned.
-Jim
I can fix it... my old man is a television repairman. He's got the ultimate set of tools... I can fix it.
Currently Mopar-less
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