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-   94-98 2nd Gen. 12V (http://www.competitiondiesel.com/forums/forumdisplay.php?f=87)
-   -   Which oil pump to run? (http://www.competitiondiesel.com/forums/showthread.php?t=198075)

BCH 10-17-2017 04:04 PM

Which oil pump to run?
 
Like the title says I'm trying to dicide which oil pump to buy for my 12 valve. I've tried searching and haven't had much luck on the topic. I'm sure getting a cummins pump would be just fine but from what I can tell they are made in China and they are way more money than the Melling pumps which I believe are made in the USA. Any advice would be appreciated.

9724VF350 10-17-2017 04:20 PM

OEM is china. They're like $105ish. I've run many of them and never had a problem, several at 5k+ rpm.

bigstacks95 10-17-2017 05:23 PM

Mine is a Melling and runs well keeping up with a Peterson external relief valve over 5k RPM

Justappumped24v 10-17-2017 05:48 PM

Quote:

Originally Posted by BCH (Post 2640001)
Like the title says I'm trying to dicide which oil pump to buy for my 12 valve. I've tried searching and haven't had much luck on the topic. I'm sure getting a cummins pump would be just fine but from what I can tell they are made in China and they are way more money than the Melling pumps which I believe are made in the USA. Any advice would be appreciated.

I have an open box never used cummins one I'll ship to you for 80.00

Stox5225 10-17-2017 08:42 PM

I upgraded to the 24v pump when I rebuild. It flows more/better. It is a OEM Cummins pump


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BCH 10-17-2017 09:19 PM

That was going to be my next question. Are all new pumps "upgraded" 24v style pumps or are there still standard 12v pumps?

9724VF350 10-18-2017 06:31 AM

Quote:

Originally Posted by BCH (Post 2640042)
That was going to be my next question. Are all new pumps "upgraded" 24v style pumps or are there still standard 12v pumps?

They're all upgraded pumps.

BCH 10-18-2017 08:23 AM

Ok, thanks. Is it a good practice to pack the pump with an assembly lube to assist with priming?

BigPapa 10-18-2017 08:39 AM

Cummins calls for the same oil pump from '94-'02, 3937404.

Snedge 10-18-2017 08:56 AM

Quote:

Originally Posted by BigPapa (Post 2640089)
Cummins calls for the same oil pump from '94-'02, 3937404.

That part number changes to 4939587 and is the upgraded (standardized) pump. 88-02 Dodges.

BigPapa 10-18-2017 09:10 AM

Well, there you go. Straight from The Man.

tornado112 10-18-2017 09:33 AM

Im interested in seeing first hand how the upgraded pump effects oil pressure.

CorneliusRox 10-18-2017 11:59 AM

Quote:

Originally Posted by tornado112 (Post 2640102)
Im interested in seeing first hand how the upgraded pump effects oil pressure.

Sounds like you're buying two pumps and measuring back to back on the same engine with similar conditions then! :hehe:

BCH 10-18-2017 09:30 PM

Any input on if using assembly lube to help prime the pump is a good idea or just unnecessary step?

CowboyEdition 10-18-2017 10:17 PM

I always pack the pump with assembly grease before installation. Helps prime the lube system.

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BCH 11-06-2017 07:49 PM

Can anyone give me an example of an assembly lube that can be used in the pump to prime it? Most of the lubes that have the textures that I assume would work are listed as transmission assembly lubes and im not sure if that's something that can be used?

CowboyEdition 11-06-2017 07:58 PM

I use John Deere Extreme Duty Synthetic grease. Part number is TY25744.

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BCH 11-06-2017 08:53 PM

Great, ill give that a try. Thank you!

JWhite 11-06-2017 09:51 PM

Lubriplate #105. It's just a white lithium assembly lube.

Hell just dump some Lucas oil stabilizer in it.

Cflanery88 11-07-2017 12:28 AM

Driven assembly grease is some pretty amazing stuff.


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