New Oil Pump - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer New Oil Pump

Print Thread

New Oil Pump #3059460 07/15/22 04:35 PM 07/15/22 04:35 PM
Joined: Mar 2012 Posts: 29 Plano, TX hkestes OP member
hkestes OP member Joined: Mar 2012 Posts: 29 Plano, TX	Have a Magnum 360 in my 37 Plymouth and the oil pressure has been slowly dropping over the past year or so. So, I have purchased a new high volume pump as a precaution. My question is, I know you need to prime a new pump on a newly built engine to make sure the bearings etc are oiled properly before starting. Do you need to prime the pump on a currently running engine? Would it be best to crank it a few times to build pressure with the coil wire off so that it doesn't start? Seems like something I should know, but don't.

Re: New Oil Pump [Re: hkestes] #3059466 07/15/22 04:53 PM 07/15/22 04:53 PM
Joined: Aug 2003 Posts: 43,097 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,097 Bend,OR USA	I would never use the SB Chevy racer trick of grinding on the starter to spin the motor over long enough to make oil pressure, NEVER I do prime all my new motors with a 1/2 drill motor and then spin the motor over with all the spark plugs out with oil pressure to ensure all rotating parts get oiled before starting On your deal I would pour some oil down the oil pickup while holding it and use the proper size Allen wrench to spin the pump over to suck that oil into the pump and let it squirt out the passage going to the main cap oil passage Don't forget to use a new gasket and torque both bolts down Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: New Oil Pump [Re: Cab_Burge] #3059469 07/15/22 04:58 PM 07/15/22 04:58 PM
Joined: May 2019 Posts: 6,215 nowhere S Sniper master
Sniper master S Joined: May 2019 Posts: 6,215 nowhere	To simplify things . You will need to pull the distributor anyway, so bolt up the pump, button up the pan, put oil in it and before you reinstall the distributor use a pump priming tool (length of 5/16 hex stock, spin it CW for a small block and it will prime the engine for you. The tool https://www.amazon.com/Genuine-Mopar-P4286800-Priming-Shaft/dp/B000CIZZGY Only reason to turn the engine over would be to get oil up to the rockers on a NEW build, no real need for what you are doing.

Re: New Oil Pump [Re: Sniper] #3059571 07/16/22 12:19 AM 07/16/22 12:19 AM
Joined: Oct 2005 Posts: 4,941 WI Dcuda69 master
Dcuda69 master Joined: Oct 2005 Posts: 4,941 WI	Doesn't matter if you're going to spin the engine or spin the pump. ALWAYS put some oil in the pump and spin it BEFORE mounting it to the engine. Dry pumps will not pump oil. I usually take the cover off the pump, make sure it's clean inside...then oil it up and bolt it in.

Re: New Oil Pump [Re: Dcuda69] #3059615 07/16/22 09:15 AM 07/16/22 09:15 AM
Joined: Sep 2003 Posts: 19,307 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,307 north of coder	way back in the day, we took the pump apart, de-burred and polished the castings, then filled the inside with STP or vaseline. today, that may not be the stuff to fill the pump with, but that is what we did a long time ago.

Re: New Oil Pump [Re: moparx] #3059635 07/16/22 11:16 AM 07/16/22 11:16 AM
Joined: Jan 2003 Posts: 25,726 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,726 Rio Linda, CA	I never install a pump right out of the box. Disassemble, clean, lube the inner rotor shaft, and pack with Vaseline. The INTERNET, the MISinformation superhighway

Re: New Oil Pump [Re: John_Kunkel] #3059674 07/16/22 02:14 PM 07/16/22 02:14 PM
Joined: Jan 2003 Posts: 10,696 North Dakota 6PakBee I Live Here
6PakBee I Live Here Joined: Jan 2003 Posts: 10,696 North Dakota	Originally Posted by John_Kunkel I never install a pump right out of the box. Disassemble, clean, lube the inner rotor shaft, and pack with Vaseline. "We live in a time when intelligent people are being silenced so that stupid people won't be offended".

Re: New Oil Pump [Re: 6PakBee] #3059747 07/16/22 09:09 PM 07/16/22 09:09 PM
Joined: Jan 2003 Posts: 15,268 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,268 Omaha Ne	Originally Posted by 6PakBee Originally Posted by John_Kunkel I never install a pump right out of the box. Disassemble, clean, lube the inner rotor shaft, and pack with Vaseline. X4 www.tandmautomotive-omaha.com

Re: New Oil Pump [Re: TJP] #3059903 07/17/22 12:31 PM 07/17/22 12:31 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	On a side note bolt up the pump to the cap barely snug then install the intermediate gear shaft then torque the pump bolts. this gives you dead on hex shaft alignment. Just my OCD talking! live every 24 hour block of time like it's your last day on earth

Re: New Oil Pump [Re: RapidRobert] #3059916 07/17/22 01:09 PM 07/17/22 01:09 PM
Joined: Oct 2005 Posts: 8,853 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,853 Ontario, Canada	Quote this gives you dead on hex shaft alignment If the long snout on the pump doesn't give you proper alignment, the shaft sure as hell isn't. Not to mention torquing the pump to the block !!

Re: New Oil Pump [Re: Stanton] #3059938 07/17/22 02:35 PM 07/17/22 02:35 PM
Joined: Sep 2003 Posts: 19,307 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,307 north of coder	when installing the pump to the block, i like to use a priming rod [just a length of 5/16" hex rod or long reach t-handle allen key] to check for binding. try the rod with the pump just snug, then torqued up. you can tell immediately if it binds. if so, you need to find out where and why it's doing so. this doesn't happen all the time, but i have run into this a time or two. so for as long as it takes to check this, it's well worth doing [in my opinion]

Re: New Oil Pump [Re: moparx] #3059978 07/17/22 04:35 PM 07/17/22 04:35 PM
Joined: Oct 2005 Posts: 8,853 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,853 Ontario, Canada	Quote you can tell immediately if it binds. if so, you need to find out where and why it's doing so. I've never had a stock pump bind. I've never had an aluminum pump that didn't bind !!!

Re: New Oil Pump [Re: Stanton] #3060001 07/17/22 05:43 PM 07/17/22 05:43 PM
Joined: Mar 2011 Posts: 3,068 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,068 Michigan	Originally Posted by Stanton Quote you can tell immediately if it binds. if so, you need to find out where and why it's doing so. I've never had a stock pump bind. I've never had an aluminum pump that didn't bind !!! Did you run a red Road Runner/GTX at Grand Bend back in the late 90’s - early 2001 time frame?

Re: New Oil Pump [Re: hkestes] #3060117 07/18/22 08:55 AM 07/18/22 08:55 AM
Joined: Jan 2003 Posts: 1,753 Windsor, ON, Canada D Diplomat360 top fuel
Diplomat360 top fuel D Joined: Jan 2003 Posts: 1,753 Windsor, ON, Canada	Unless I missed it, no one has mentioned the tank based pre-lube setups yet. Allstar Performance Oil Pressure Primer Tanks ALL10535 I picked up a used EL05 (which is a lot like this Melling Prelube Engine Oiler Tank Kits MPL-201 part) when a local machine shop was closing down. I haven't used it yet, although it appears to be literaly child's play easy! So my point being: once you have it all assembled and on the SB the pump to distributor drive is all aligned (and you do not want to touch it anymore) you could certainly take the tank based approach. I've used the hex-shaft before during on-stand engine assembly, and that was great. However, you are tied up spinning the drill and that means you are not turning the engine, and/or observing the oil-flow. For that reason I picked up this tank and the intent is to plumb-it-up (tank feeds into the block oil pressure sensor passage), turn the valve to start the flow and go inspecting things as the pressure drains out of the tank and eventually the oil flow stops. Heck, taking that a step further one could argue that this would be a good way to prep for the season's start as you take your ride out of the garage and get it road ready...I have never done that before, and the old 360 motor did not seem to suffer for it...but heck, an extra 1/2 hr. of care would seem to go a long way to get the oil up into all the necessary passages, so why not?

Re: New Oil Pump [Re: A727Tflite] #3060126 07/18/22 09:44 AM 07/18/22 09:44 AM
Joined: Oct 2005 Posts: 8,853 Ontario, Canada S Stanton Don't question me!
Stanton Don't question me! S Joined: Oct 2005 Posts: 8,853 Ontario, Canada	Originally Posted by Transman Originally Posted by Stanton Quote you can tell immediately if it binds. if so, you need to find out where and why it's doing so. I've never had a stock pump bind. I've never had an aluminum pump that didn't bind !!! Did you run a red Road Runner/GTX at Grand Bend back in the late 90’s - early 2001 time frame? Nope, not me.

Re: New Oil Pump [Re: Diplomat360] #3060260 07/18/22 03:03 PM 07/18/22 03:03 PM
Joined: May 2019 Posts: 6,215 nowhere S Sniper master
Sniper master S Joined: May 2019 Posts: 6,215 nowhere	Originally Posted by Diplomat360 Unless I missed it, no one has mentioned the tank based pre-lube setups yet. Allstar Performance Oil Pressure Primer Tanks ALL10535 I picked up a used EL05 (which is a lot like this Melling Prelube Engine Oiler Tank Kits MPL-201 part) when a local machine shop was closing down. I haven't used it yet, although it appears to be literaly child's play easy! So my point being: once you have it all assembled and on the SB the pump to distributor drive is all aligned (and you do not want to touch it anymore) you could certainly take the tank based approach. I've used the hex-shaft before during on-stand engine assembly, and that was great. However, you are tied up spinning the drill and that means you are not turning the engine, and/or observing the oil-flow. For that reason I picked up this tank and the intent is to plumb-it-up (tank feeds into the block oil pressure sensor passage), turn the valve to start the flow and go inspecting things as the pressure drains out of the tank and eventually the oil flow stops. Heck, taking that a step further one could argue that this would be a good way to prep for the season's start as you take your ride out of the garage and get it road ready...I have never done that before, and the old 360 motor did not seem to suffer for it...but heck, an extra 1/2 hr. of care would seem to go a long way to get the oil up into all the necessary passages, so why not? You could make one out of a garden sprayer for a heck of a lot less.

Re: New Oil Pump [Re: Sniper] #3060293 07/18/22 05:02 PM 07/18/22 05:02 PM
Joined: Jan 2003 Posts: 1,753 Windsor, ON, Canada D Diplomat360 top fuel
Diplomat360 top fuel D Joined: Jan 2003 Posts: 1,753 Windsor, ON, Canada	Originally Posted by Sniper Originally Posted by Diplomat360 Unless I missed it, no one has mentioned the tank based pre-lube setups yet. Allstar Performance Oil Pressure Primer Tanks ALL10535 I picked up a used EL05 (which is a lot like this Melling Prelube Engine Oiler Tank Kits MPL-201 part) when a local machine shop was closing down. I haven't used it yet, although it appears to be literaly child's play easy!... You could make one out of a garden sprayer for a heck of a lot less. Absolutely you could...I bought mine used for under $50 so it fit my budget perfectly, but as you said, this is not a complex setup: tank, couple of valves, etc...when I got mine, having looked it over I thought: "hmm...old propane tank would do just fine"!!! lol

Re: New Oil Pump [Re: Diplomat360] #3061511 07/21/22 09:00 PM 07/21/22 09:00 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	you might consider some porting/deburring on the new pump. there are some major obstructions that you can improve on with minimal effort live every 24 hour block of time like it's your last day on earth

Re: New Oil Pump [Re: RapidRobert] #3061547 07/22/22 03:18 AM 07/22/22 03:18 AM
Joined: Jan 2003 Posts: 27,451 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,451 So Cal	Originally Posted by RapidRobert you might consider some porting/deburring on the new pump. there are some major obstructions that you can improve on with minimal effort I did that

Re: New Oil Pump [Re: autoxcuda] #3061614 07/22/22 12:12 PM 07/22/22 12:12 PM
Joined: Sep 2003 Posts: 19,307 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,307 north of coder	that looks good.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1