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Re: Engine sits for about a weekend and have no oil pressure. [Re: AndyF] #2752289
03/15/20 07:06 PM
03/15/20 07:06 PM
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Sammy Offline OP
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Originally Posted by AndyF
That could work. I use the small Mopar 409 filters on my stuff these days. The little filters fill up with oil faster and they are stronger since they are smaller. Screw one of those on there and see if it solves the problem.


Going to try that.
Thanks
This problem started with this Moroso break in oil filter. Think it is a fine micron filter element.

Re: Engine sits for about a weekend and have no oil pressure. [Re: lewtot184] #2752290
03/15/20 07:06 PM
03/15/20 07:06 PM
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Originally Posted by lewtot184
the dual swinging pick-ups have issues sometimes. I always used the static dragster pick-ups. that being said i'll be the odd man out here. try a different filter first before dismantling the mechanicals. I've had trouble with drain back on every wix, napa, k&n, and I hate to say but baldwins too. baldwins used to be top notch. the anti-drainback in the wix, etc, etc, doesn't work when the filter is in the horizontal. people will argue this but I doubt most people know or understand drain back. currently i'm using purolator pl30001's without issue. other brands may work too. a $10 test is where i'd go first.


Never had a problem with Wix oil filters. This just started with the Moroso oil filter.

Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2752300
03/15/20 07:29 PM
03/15/20 07:29 PM
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Originally Posted by Sammy
Originally Posted by lewtot184
the dual swinging pick-ups have issues sometimes. I always used the static dragster pick-ups. that being said i'll be the odd man out here. try a different filter first before dismantling the mechanicals. I've had trouble with drain back on every wix, napa, k&n, and I hate to say but baldwins too. baldwins used to be top notch. the anti-drainback in the wix, etc, etc, doesn't work when the filter is in the horizontal. people will argue this but I doubt most people know or understand drain back. currently i'm using purolator pl30001's without issue. other brands may work too. a $10 test is where i'd go first.


Never had a problem with Wix oil filters. This just started with the Moroso oil filter.



I have used the Milodon dual line swinging pick up on my Hemi for over ten years and always used the Wix filters . Never a problem.

Mark


http://marsh-racing.com/Mark%20Mahorney-Allstate.htm
1996 Ram 1500 Sport
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1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
Re: Engine sits for about a weekend and have no oil pressure. [Re: Hemi Allstate] #2752400
03/16/20 12:30 AM
03/16/20 12:30 AM
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I have the exact same problem with my swinging pickup, -12 external line, and Indy Billet Oil pump, and I will try the Purolator one...worth a try.

Mark

Re: Engine sits for about a weekend and have no oil pressure. [Re: lockjaw-express] #2752510
03/16/20 12:06 PM
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the problems that the OP originally layed out are exactly problems I have experienced with filter drain back. the oil will drain out of the filter to the bottom of the threaded connection. that doesn't mean there "couldn't" be an air leak, but I seriously doubt that pressure would pick back up/normalize by mechanical priming if the system wasn't air tight. I've built milodon swinging pick-up engine combo's without issue, BUT the joint where the pick-up swings can leak air if not always covered in oil and that's why my preference is a static pick-up.

Re: Engine sits for about a weekend and have no oil pressure. [Re: lewtot184] #2752565
03/16/20 03:42 PM
03/16/20 03:42 PM
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Originally Posted by lewtot184
the problems that the OP originally layed out are exactly problems I have experienced with filter drain back. the oil will drain out of the filter to the bottom of the threaded connection. that doesn't mean there "couldn't" be an air leak, but I seriously doubt that pressure would pick back up/normalize by mechanical priming if the system wasn't air tight. I've built milodon swinging pick-up engine combo's without issue, BUT the joint where the pick-up swings can leak air if not always covered in oil and that's why my preference is a static pick-up.



Just to mention, I do run a Moroso 3 quart accumulator. Even after turning it on and getting 24 psi out, the pump still won't prime.

Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2752577
03/16/20 04:17 PM
03/16/20 04:17 PM
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Originally Posted by Sammy
Originally Posted by lewtot184
the problems that the OP originally layed out are exactly problems I have experienced with filter drain back. the oil will drain out of the filter to the bottom of the threaded connection. that doesn't mean there "couldn't" be an air leak, but I seriously doubt that pressure would pick back up/normalize by mechanical priming if the system wasn't air tight. I've built milodon swinging pick-up engine combo's without issue, BUT the joint where the pick-up swings can leak air if not always covered in oil and that's why my preference is a static pick-up.



Just to mention, I do run a Moroso 3 quart accumulator. Even after turning it on and getting 24 psi out, the pump still won't prime.


You stated this started with a new filter - a Moroso - have you tried another filter yet?
As for the pickup sucking air - how is that possible when the pan’s oil level is above the swinging pickup ?

Also, the greatest contributor to a pump’s inability to prime is too much face clearance. Make sure no difference is a trans pump or engine oil pump. That and too much “resistance” to flow on the output side - hence your reduced micron level Moroso filter.

Been using Mildon systems since the late 60’s and never had an issue with any swinging pickup.

Last edited by Transman; 03/16/20 04:25 PM.
Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2752590
03/16/20 05:19 PM
03/16/20 05:19 PM
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Originally Posted by Sammy
Originally Posted by lewtot184
the problems that the OP originally layed out are exactly problems I have experienced with filter drain back. the oil will drain out of the filter to the bottom of the threaded connection. that doesn't mean there "couldn't" be an air leak, but I seriously doubt that pressure would pick back up/normalize by mechanical priming if the system wasn't air tight. I've built milodon swinging pick-up engine combo's without issue, BUT the joint where the pick-up swings can leak air if not always covered in oil and that's why my preference is a static pick-up.



Just to mention, I do run a Moroso 3 quart accumulator. Even after turning it on and getting 24 psi out, the pump still won't prime.


Now that is a weird problem. I've had problems with dual line Milodon systems before but I've never had one that wouldn't prime once the accumulator was turned on. In fact, the best band aid for the Milodon non-prime problem has always been to use an accumulator. I'm thinking that you're going to have to take the system all apart and inspect it closely. You must have something more out of whack than the typical Milodon system.

Re: Engine sits for about a weekend and have no oil pressure. [Re: AndyF] #2752817
03/17/20 12:01 PM
03/17/20 12:01 PM
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central il.
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I had a crack in my internal pickup and it did that.

Re: Engine sits for about a weekend and have no oil pressure. [Re: AndyF] #2752904
03/17/20 06:50 PM
03/17/20 06:50 PM
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Andy, I have my 2qt Accumulator providing oil to the back of the block where the oil pressure sensor goes...is there another location that would be better? I have the Indy Blue Billet oil pump on my hemi, and a single -12 AN hose going to an Indy swinging pickup.

Thanks, Mark

Re: Engine sits for about a weekend and have no oil pressure. [Re: lockjaw-express] #2752926
03/17/20 07:57 PM
03/17/20 07:57 PM
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Originally Posted by lockjaw-express
Andy, I have my 2qt Accumulator providing oil to the back of the block where the oil pressure sensor goes...is there another location that would be better? I have the Indy Blue Billet oil pump on my hemi, and a single -12 AN hose going to an Indy swinging pickup.

Thanks, Mark


this is what I use.

easy and effective

https://www.summitracing.com/parts/...l-sr4yUpfOwXIk6J0V5zKcuqSogaAhBJEALw_wcB

Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2752933
03/17/20 08:35 PM
03/17/20 08:35 PM
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Morrow, OH
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Originally Posted by Sammy
Originally Posted by lockjaw-express
Andy, I have my 2qt Accumulator providing oil to the back of the block where the oil pressure sensor goes...is there another location that would be better? I have the Indy Blue Billet oil pump on my hemi, and a single -12 AN hose going to an Indy swinging pickup.

Thanks, Mark


this is what I use.

easy and effective

https://www.summitracing.com/parts/...l-sr4yUpfOwXIk6J0V5zKcuqSogaAhBJEALw_wcB


I use the Canton equivalent........

https://www.summitracing.com/parts/ctr-22-565


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Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2752938
03/17/20 08:44 PM
03/17/20 08:44 PM
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I've got a Moroso, maybe it is a Canfield, 3 quart oil accumulator I've not taken out of the box since buying it from a local boat racer years ago. I'm planning on using a 12 AN line plumbed into the oil line going back to the block from the remoted mounted oil filter with a male #12 AN T fitting up
I did use one of the Morrso 3 quart accumulator on another motor years ago and plumbed it with a #6AN line to the back of the block, but decided since then to use the larger size line plumb into the front of the block instead of the smaller size oil passages at the rear of the BB Mopar blocks work shruggy


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Re: Engine sits for about a weekend and have no oil pressure. [Re: Cab_Burge] #2752951
03/17/20 09:20 PM
03/17/20 09:20 PM
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Wind Gap,Pa.
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Sammy Offline OP
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I think I have to reroute my rear -12AN line tomorrow.
Looks like its pitched downward not up.
This might be my problem.
Not sure why I would have plumbed it this way.
Wont know for sure till I get it up on jacks.

Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2752968
03/17/20 10:04 PM
03/17/20 10:04 PM
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Sam post what ends up fixing it. My thought is that your current setup worked fine & now SOMETHING has changed/sprung a leak


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Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2753003
03/18/20 01:35 AM
03/18/20 01:35 AM
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Hi Sammy,

I have an all aluminum Indy Hemi...that adapter would kick out the filter into the radiator. My -12 AN line comes straight out the back of the pump and runs on an angle down to the rear pan/swivel pickup on the back of the pan. I will see if I have a picture to post.

Thanks, Mark

Last edited by lockjaw-express; 03/18/20 07:44 AM.
Re: Engine sits for about a weekend and have no oil pressure. [Re: lockjaw-express] #2753112
03/18/20 12:26 PM
03/18/20 12:26 PM
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I had that problem in the eighties and Kendall green oil cured it. That stuff would cling to anything! Too bad it is gone!!!


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Re: Engine sits for about a weekend and have no oil pressure. [Re: gregsdart] #2753165
03/18/20 02:57 PM
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Originally Posted by gregsdart
I had that problem in the eighties and Kendall green oil cured it. That stuff would cling to anything! Too bad it is gone!!!


Lucas oil has that green thick oil, although it is a 60w, & it is green smile


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Re: Engine sits for about a weekend and have no oil pressure. [Re: CSK] #2753214
03/18/20 05:44 PM
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Now I'm really baffled.
Got a loop in the line at the back oil line.
Front line goes up and over pump, so that one definitely holds oil in the filter. Tightened up all the fittings again. I was able to tighten them up more for some reason.
I started it up and now only 3 days and it lost prime.
Turned off ignition and turned it on and it took about 20 seconds to get oil pressure.
I did use the oil accumulator and got 25 psi shot into the motor.
But oil pressure did not go up quick enough for my liking.
Wondering if they make a 1 way check valve for the bottom oil line?
Going to try again tomorrow and if I lose prime again I'm going to change out the oil filter back to my trusty WIX.

Re: Engine sits for about a weekend and have no oil pressure. [Re: Sammy] #2753226
03/18/20 06:25 PM
03/18/20 06:25 PM
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Originally Posted by Sammy
Now I'm really baffled.
Got a loop in the line at the back oil line.
Front line goes up and over pump, so that one definitely holds oil in the filter. Tightened up all the fittings again. I was able to tighten them up more for some reason.
I started it up and now only 3 days and it lost prime.
Turned off ignition and turned it on and it took about 20 seconds to get oil pressure.
I did use the oil accumulator and got 25 psi shot into the motor.
But oil pressure did not go up quick enough for my liking.
Wondering if they make a 1 way check valve for the bottom oil line?
Going to try again tomorrow and if I lose prime again I'm going to change out the oil filter back to my trusty WIX.


Sammy, mine does the same with the Wix and Mobil1 filters, and mine does what yours does, exactly. I am now thinking the filter is full, but the oil in the pump drains back into the engine and loses its prime. In the summer heat, I sometimes get pressure right away.

I am thinking if there is a way to prime the engine with the accumulator off of the front of the oil pump...maybe that would work???

Mark

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