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Vasoline for oil pump replacement #1759853 02/21/15 09:30 PM 02/21/15 09:30 PM
Joined: Jul 2012 Posts: 102 pensacola, fl 5 53fopar OP member
53fopar OP member 5 Joined: Jul 2012 Posts: 102 pensacola, fl	Getting ready to do my 904 to 518 tranny swap. Since the tranny will be out, thought I'd do the rear main seal and oil pump. Thinking of doing a high volume pump to bring the oil pressure up a little. Might as well do a chrome oil pan too. Hell, it's only money.... Anyone used the "pack the pump with vasoline" trick? Does it avoid having to pull the dizzy and prime?

Re: Vasoline for oil pump replacement [Re: 53fopar] #1759854 02/22/15 12:27 AM 02/22/15 12:27 AM
Joined: Nov 2004 Posts: 1,708 S. Il. U.S.A. 5spdcuda top fuel
5spdcuda top fuel Joined: Nov 2004 Posts: 1,708 S. Il. U.S.A.	Probably not necessary, but I always do it on small blocks since I don't want to have to pull a freshly sealed oil pan even if it's still on the engine stand much less in the car. Most of time simply spinning the pump with a hex shaft will suck oil without any vasoline or other help, but I don't want to chance it. Big blocks with their external pumps I am not that concerned about. On big blocks I just make sure they have some oil in them. I've never seen where the vasoline does any harm.As far as avoiding the need to pull the distributor and drive gear is concerned, so long as the engine already has oil in all the galleries,bearings, etc. then no you don't have to do it. If it's a fresh unfired engine then yes do it. Last edited by 5spdcuda; 02/22/15 12:33 AM.

Re: Vasoline for oil pump replacement [Re: 53fopar] #1759855 02/22/15 02:57 AM 02/22/15 02:57 AM
Joined: Jan 2003 Posts: 18,409 UPPER MICHIGAN, MARQUETTE COUN... N NITROUSN I Live Here
NITROUSN I Live Here N Joined: Jan 2003 Posts: 18,409 UPPER MICHIGAN, MARQUETTE COUN...	First of all high volume may do zilch for your pressure. If your intentions are to increase the pressure you should be looking as to why your pressure has dropped. Vasoline was a old time pump packing when a rebuilt engine may sit for a while.

Re: Vasoline for oil pump replacement [Re: NITROUSN] #1759856 02/22/15 02:51 PM 02/22/15 02:51 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Oil pumps are constant volume pumps, meaning for a given rpm they pump a given volume of oil. They really don't make pressure, just flow. So, it is the flow restriction downstream that determines what the pressure is at the outlet of the pump. If the flow restriction decreases, the pump pressure will decrease. That's what happens when clearances open up. The only way to get increased pressure through a fixed restriction is to pump more volume. That's what the high volume pump does. It's Pumping 101. So if your oil pressure is decreasing because the clearances are opening up, a high volume pump should crutch the situation and allow you to get more miles out of that set of bearings. R.

Re: Vasoline for oil pump replacement [Re: dogdays] #1759857 02/22/15 02:59 PM 02/22/15 02:59 PM
Joined: Nov 2007 Posts: 21,819 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,819 Kirkland, Washington	Quote: Oil pumps are constant volume pumps, meaning for a given rpm they pump a given volume of oil. They really don't make pressure, just flow. So, it is the flow restriction downstream that determines what the pressure is at the outlet of the pump. If the flow restriction decreases, the pump pressure will decrease. That's what happens when clearances open up. The only way to get increased pressure through a fixed restriction is to pump more volume. That's what the high volume pump does. It's Pumping 101. So if your oil pressure is decreasing because the clearances are opening up, a high volume pump should crutch the situation and allow you to get more miles out of that set of bearings. R. : correct

Re: Vasoline for oil pump replacement [Re: Pacnorthcuda] #1759858 02/22/15 03:54 PM 02/22/15 03:54 PM
Joined: Jul 2012 Posts: 102 pensacola, fl 5 53fopar OP member
53fopar OP member 5 Joined: Jul 2012 Posts: 102 pensacola, fl	Yeah, I am guessing the cam bearings are the problem. Pressure isn't awful, about 5psi at idle when hot. In he summer I switch to 20W50 to keep pressure up. With all my money going in the transmission swap, I don't have the money to do the motor this year. Not burning any oil yet. I think it will hold up another year, maybe more, before needing a re-build. Not really looking for a racing pump, just improvement over OEM. I was checking into rear seals and get a lot of conflicting information. Rope or rubber? Silicone or not? Off-set the two halves or line up with the bearing cap? And I thought it would be simple..... Also, what's the experience with the chrome oil pans? Leaky junk? Any better brands?

Re: Vasoline for oil pump replacement [Re: 53fopar] #1759859 02/22/15 04:10 PM 02/22/15 04:10 PM
Joined: Nov 2007 Posts: 21,819 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,819 Kirkland, Washington	Quote: Yeah, I am guessing the cam bearings are the problem. Pressure isn't awful, about 5psi at idle when hot. In he summer I switch to 20W50 to keep pressure up. With all my money going in the transmission swap, I don't have the money to do the motor this year. Not burning any oil yet. I think it will hold up another year, maybe more, before needing a re-build. Not really looking for a racing pump, just improvement over OEM. I was checking into rear seals and get a lot of conflicting information. Rope or rubber? Silicone or not? Off-set the two halves or line up with the bearing cap? And I thought it would be simple..... (Quote) (Quote) Cam bearings are very lightly loaded. Odds are that its the rod and/or mains. The HV pump IS the band-aid for that issue. As far as the rear main, get the Orange Viton seal maid by Superformance. Yes offset the split in the housing. Don't worry about a knurled crank or not--I put one on a knurled crank and it does not leak a single drop! I hate cars that leak!

Re: Vasoline for oil pump replacement [Re: 53fopar] #1759860 02/22/15 06:31 PM 02/22/15 06:31 PM
Joined: Jan 2003 Posts: 25,757 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,757 Rio Linda, CA	Packing the rotors and drive shaft with Vaseline seals the rotors and improves suction for initial startup. The INTERNET, the MISinformation superhighway

Re: Vasoline for oil pump replacement [Re: John_Kunkel] #1759861 02/23/15 11:37 PM 02/23/15 11:37 PM
Joined: Sep 2011 Posts: 2,042 colorado S savoy64 top fuel
savoy64 top fuel S Joined: Sep 2011 Posts: 2,042 colorado	some use the engine assembly grease as pump packing----dont let your wife find your black fingerprints on the vaseline.....

Re: Vasoline for oil pump replacement [Re: savoy64] #1759862 02/25/15 04:49 AM 02/25/15 04:49 AM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Yeah, and K-Y jelly will drip out! R.

Re: Vasoline for oil pump replacement [Re: savoy64] #1759863 02/25/15 11:56 AM 02/25/15 11:56 AM
Joined: May 2003 Posts: 15,487 Florida S scratchnfotraction I Live Here
scratchnfotraction I Live Here S Joined: May 2003 Posts: 15,487 Florida	make sure the type of assembly greese you use is formulated not to clog the filter. I use the Vaseline in a used pump if I have it off and a new pump if it is a fresh build with cam break in. assenbly greese/break in lube on everything else.

Re: Vasoline for oil pump replacement [Re: scratchnfotraction] #1759864 02/26/15 01:02 AM 02/26/15 01:02 AM
Joined: Dec 2008 Posts: 2,782 USA J JoesMopar master
JoesMopar master J Joined: Dec 2008 Posts: 2,782 USA	Don't you need a hardened intermediate shaft when you use the HV pump? I thought they also had a radius on the shaft as well?

Re: Vasoline for oil pump replacement [Re: JoesMopar] #1759865 02/26/15 01:14 AM 02/26/15 01:14 AM
Joined: Nov 2007 Posts: 21,819 Kirkland, Washington Pacnorthcuda Too Many Posts
Pacnorthcuda Too Many Posts Joined: Nov 2007 Posts: 21,819 Kirkland, Washington	Quote: Don't you need a hardened intermediate shaft when you use the HV pump? I thought they also had a radius on the shaft as well? Do you NEED it? Well no, but it's a pretty damn good idea. Radius on the shaft is what identifies a hardened shaft from standard.

Re: Vasoline for oil pump replacement [Re: Pacnorthcuda] #1759866 02/26/15 03:50 AM 02/26/15 03:50 AM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	Vasoline is for something other than engine builds. Yep,it's been printed for years but c'mon guys. Prime your engine and drop the distributor and go. Vasoline??? Really?? I could only guess that was printed for folks that would spend hours getting a build to fire? I dunno but I'm certain Gibbs,Roush,R&M,etc would not consider such crap ever enter a good engine.

Re: Vasoline for oil pump replacement [Re: goldmember] #1759867 02/26/15 03:53 PM 02/26/15 03:53 PM
Joined: Jan 2003 Posts: 25,757 Rio Linda, CA John_Kunkel Too Many Posts
John_Kunkel Too Many Posts Joined: Jan 2003 Posts: 25,757 Rio Linda, CA	Would you start a new engine with no assembly lube? Then don't turn a new pump without lubing it internally. Sure, oil will work but Vaseline clings better and will dissolve in the oil. The INTERNET, the MISinformation superhighway

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