Melling oil pump - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 13 (permalink) Old 11-01-2007, 12:55 AM Thread Starter
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Melling oil pump

So I've been thinking of replaceing the low pressure oil pump on my truck being I've just reused it during the last overhaul. It looked OK but had a little scuffing on the tips of the rotor. From what little I've heard about it it is supposed to be a high volume pump. Is this correct? Or do they have a standard and high volume pump? Where is the best place to get them? How much do they typically cost?

'96 F-250 Extended Cab, GT'S injectors, GT'S intercooler install kit, custom turbo kit with a little HX40, Swamp's BIGEST oil.
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post #2 of 13 (permalink) Old 11-01-2007, 03:34 AM
 
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I got mine from O'Riley's for about $85. Supposedly all Melling offers now is the high volume unit (M208 I believe is the part number IIRC). The pump that i got form Ford in the rebuild kit was the standard pump, so i know it's still avaliable. Basically the difference is that the high volume unit has fewer lobes, but they are bigger and are supposed to move more oil. I've heard that they really only move more oil at higher RPM's, but i'm having decent luck w/mine. . .so who knows.

-Brad Desatnik
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post #3 of 13 (permalink) Old 11-01-2007, 02:15 PM
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replaced a few with oem ford, cheaper than a standard melling

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post #4 of 13 (permalink) Old 11-01-2007, 06:46 PM Thread Starter
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Napa quoted me $109 for it today.

'96 F-250 Extended Cab, GT'S injectors, GT'S intercooler install kit, custom turbo kit with a little HX40, Swamp's BIGEST oil.
466 on #2 only
739 with NČO

13.544 in 1/4 mi!

"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford

Yeah I can keep up!:Thumbup:
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post #5 of 13 (permalink) Old 11-01-2007, 07:14 PM
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Is this easy to do? How long does it take?

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post #6 of 13 (permalink) Old 11-01-2007, 10:26 PM
 
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It's not miserable to do. You have to pull the harmonic damper which means you'll probably need to pull the fan off unless you have a tiny puller (the fan is the worst part). With the damper off, there are 4 bolts that hold the pump to the front cover. When you put it back on, pack it w/vasoline or something similar (standard grease has been known to plug oil journals and burn up bearings, so use something that will break down in the oil), be sure that the part of the gear stamped "DAMPER" is not visible in the housing, then bolt it back up. It takes 30 minutes - 3 hours depending on how stubborn the fan is.

The best way i've found to get the fan off is to replace 2 of the bolts in the fan/water pump pulley with ones that are just a hair longer so you can get the fan removal wrench behind them to get a solid grab and keep them from slipping off the bolt heads (as the tool is designed to be used).

-Brad Desatnik
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post #7 of 13 (permalink) Old 11-01-2007, 10:27 PM
 
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Quote:
Originally Posted by gtspowerstroke
Napa quoted me $109 for it today.
http://www.oreillyauto.com/EW3/Displ...ycleCount=2417

-Brad Desatnik
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post #8 of 13 (permalink) Old 11-01-2007, 10:59 PM Thread Starter
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Man it sucks that there aren't any in Washington. I just went to NAPA and the one they have is not a Melling so I told him I didn't want it. Figure if I'm going to get one I might as well get the one that's going to flow more. I'll call around to a few different places and see what else I can find.

'96 F-250 Extended Cab, GT'S injectors, GT'S intercooler install kit, custom turbo kit with a little HX40, Swamp's BIGEST oil.
466 on #2 only
739 with NČO

13.544 in 1/4 mi!

"If you think you can do a thing or think you can't do a thing, you're right." Henry Ford

Yeah I can keep up!:Thumbup:
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post #9 of 13 (permalink) Old 11-02-2007, 12:57 AM
 
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Bob Riley says the guys at melling told him it isn't any more volume. It may be stronger, but....

It is shaped different, two less lobes, but larger IIRC.

Should flow a little more based on the way it looks.

You can get it from Dennis at ITP for 70 bucks.
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post #10 of 13 (permalink) Old 11-02-2007, 01:59 AM
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New motor has one... I wounder when I will see it...

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