Mallory pump installed

[WAYNE]

Finally got the mallory pump installed ( thanks Willie) along with a fram hpg 1 filter. We ditched the factory return line, used the factory feed for a return , ran 1/2" (-8 an) aeroquip high pressure hose from the tank to the stock filter, from the stock filter to the vp44 3/8" (-6 an ) was used.

The stock lift pump wasnt too bad , but I wanted more volume with less pressure loss for future power upgrades. Once everything was installed and running the mallory pump was so quiet I couldnt tell if it was on. The factory lift pump harness was tapped for power , and a seperate relay run for the mallory pump.

Stock fuel pressures were: idle 11 psi, 70 mph cruise 9 psi , w. o. t.

6 psi, edge box 3-4 psi.

Mallory pump : idle 11. 5 psi ( factory pump setting) 70 mph cruise 11 psi, w. o. t. 9. 5 - 10 psi , edge box on the max setting 8. 5 - 9 psi.

Im verry happy with the performance and would recommend this set up for anyone with plans for serious power.

 

[cap-n-cray]

Pics and details

Let us in on the details. Pics and numbers?

 

[BIG BOB]

Wayne,



My Mallory 140 has been on since July 8th. It has worked flawlessly. Since I changed for the Hot PE and EZ to the PE Comp, my fuel pressure readings are as follows:



Idle 12#



Cruzing 11#



WOT 7+#



Picture of Mallory installation:



http://content.communities.msn.com/TheWhiteObsession/shoebox.msnw?action=ShowPhoto&PhotoID=29

 

[Bigsaint]

Me too, me too !!!!

Well, I'm on my second one now, but that's a long story . Anyway, my second Mallory is rocking strong since Memorial Day weekend. Nice thing about them is they are rebuildable, cost me $50. 00 to have the first one repaired. Mine's set at 13 psi's @ idle, I can drag it now lower than 6 psi's or so at WOT with the showerheads on all boxes on warp speed. One word of advice, if you are going to adjust the deadhead on the Mallory, always do so with the truck running ( and after you take a drive for 10 miles or so).

 

[John]

lucky me!

I'm right in the middle of my Mallory electric fuel pump (model #4140M... Marine) installation. I'm just awaiting a replacement component (System 1 billet aluminum in-line fuel filter) that I received damaged.



Another trick piece I purchased (I have yet to install), a Painless Wiring Fuel Pump Relay Kit (part #50102). The kit includes a relay, relay socket assembly that is prewired (each wire is marked for easier hookup), a circuit breaker and required installation hardware. A relay by itself would be cheaper however, this product is pretty trick. In addition, if the relay has to be replaced it would be a lot easier to unplug the damaged one from the Painless Wiring assembly than to remove each wire individually. This, along with a project box to house same should make for a very sano installation.



..... he!!, I better get goin', I've only got seven days left until Dyno Days!

 

[WAYNE]

Hey big Bob, my setup looks almost identical to yours, except I used the fram filter. Do you know the g. p. h. flow of the filter you used? I just realized mine is 90 g. p. h. with the pump being 140 i'm not sure how much of a restriction it is. Even still, it cant be significant because the pressure barely drops.

 

[redneckdr]

filter

big bob:

i too would like to know the filter, number, and source... ... i like it!!

wayne:

if you run more than 90 gph through your rig, you must be making some serious power. i'd like to see your fuel tank... ..... i know, this setup is on a fuel tanker???

herb

 

[WAYNE]

No fuel tanker but seriously, the mallory puts out 140 g. p. h. @ 12 p. s. i so I didnt want it to have to suck too hard through a filter that didnt match the flow. I think sometimes it's more the volume that counts than the pressure. Some guys have 15 psi at idle, but can easily suck that down to 8 psi thats a seven psi loss. At least on my truck with this setup i've only seen a 3 psi loss max. Remember less pressure = more volume ( to a certain extent )

 

[BIG BOB]

Wayne and redneckdr,



The filter I used is a Racor 645R30. It is rated at 45 GPH. I talked with Mallory about this filter. With their approval I purchased it. Mallory stated that as long as it was 50 micron or less it would be fine for the lift pump. They also stated that 45 GPH would not hurt the pump. As far as the restriction, with the testing Bill Kondolay and MoparMuscle did on the consumption of fuel of the Cummins, the maximum fuel consumption is somewhere around 30 GPH at WOT! That still leaves me 15 gallons of fuel to cool the injection pump per hour if I was running at WOT! That will never happen. You can only pump so much fuel through your lines, I don't think you could run 140 gallons through them in an hour. All in all I think things are very well balanced. I only loose a maximum of 5# of pressure at WOT with 450+ HP.



Another reason I chose the Racor 645R30 is because of it's size, I didn't want it hanging down below the frame of the truck.



If you order this filter, order 645R10, this has a 10 Micron filter (last two numbers of filter are the micron rating). 10 Micron is recommended for our injection pumps. I ordered 3 10 micron filters today, retail is $24. 00 with the 25% discount that they gave me, the cost was $18. 00 each. These filters are still rated at 45 GPH.



When I ordered my Racor 645R30 from Mid-Atlantic Engine Supply Corp. The list price (which everyone else wanted to charge me) is $121. 00. Mid-Atlantic gave me a 25% discount. Filter was $90. 75 plus shipping. This included the housing and filter.



Mid-Atlantic Engine Supply Corp.

1-856-829-7798



Just ask for the 25% discount, they will give it to you.

 

[DGFoster]

Can you use the 4140 m in the stock location,or does it need to go back by the tank,and does it hook to the stock fittings?. . Dave

 

[redneckdr]

filter

big bob

thanx for the reply. i had looked at several filters and rejected 'em for that very reason--didn't want it hanging below the frame rail. now, any one know a source for an electric shutoff? i want to put one back by my pusher, to serve as an extra security feature. shut that puppy off and with a hidden switch some low life might get her to run, but not far!! would help in case of a"run on", too maybe. so far after quite a bit of searching, i haven't located a shut off valve. tank switching valves, yes ,simple shut off's, no.

 

[Bigsaint]

Back by the tank

Dodgeboyz, you need to move it back by the tank, mounted on the frame. Your going to splice into the inbound hardline back by the tank, and you can just use rubber fuel line if you wish to hook up the Mallory ( you will need 3/8" NPT to 3/8" barbed fittings) or you can swap out to braided SS line and use a compression fitting to adapt the hardline to the braided hose end.



Scott W.

 

[John]

Originally posted by Dodgeboyz

Can you use the 4140M in the stock location,or does it need to go back by the tank?

Mallory requires ANY of their electric fuel pumps to be mounted within 4' of the fuel pickup. So, to answer your question, no, the Mallory fuel pump can't be mounted in the stock lift pump location... it must be mounted back by the fuel tank. Besides, that's where you want to mount any electric fuel pump... back by the fuel tank, as electric fuel pumps push fuel much more effeciently than pulling it.

 

[Ray Torresdal]

painless wiring ....

John, where did you find the "painless wiring fuel pump kit"?? Ray

 

[redneckdr]

wiring kits

ray t:

i don't know where john got his "kit", but a lot of parts stores sell a "female" base for the relays. the female base has the pigtails already integrated into the base, to connect to the hookup wires. btw, are you THE ray t, of banjo bolt fame? if so, thanks. bought the bolts at genos. now just gotta get the money for the gauges.....

 

[John]

Painless Wiring Fuel Pump Relay Kit

I purchsed the Painless Wiring Fuel Pump Relay Kit part #50102 from Jeg's (sorry Willyslover... first time I've purchased from them in many years... I usually deal with Summit however, they had everything I needed in stock). The kit also includes a circuit breaker instead of a fuse. The down side... they seem pretty proud of it at $26. 95. Actually, I added the kit at the last minute while placing my order, thinking I may use it... if not, I would have returned it. It turns out I like it, I'm going to install it, case closed.

 

[WAYNE]

Hey big Bob thanks for the info on the filter, guess i'm ok then. My filter is rated at 90 g. p. h and filters down to 10 microns.

 

[LFarrar]

hay guys, my lift pump R. I. P. died today have negetive pressure. only 4k miles,is it worth having dc fix or go to the mallory right off the bat,and can you pump through the stok pump?????

 

[B. Gill]

quite a few members chose to replace ourselves and forget about DC. and to answer your 2nd question no you will need to bypass the stock pump as it will resist fuel flow. do a search for lift pumps and you will find lots of good info. hope this helps

bob

 

[Bigsaint]

Earl's pre-filter

I just took my Earl's filter out today for an inspection/cleaning (5000 miles). Seem's to be doing the job, a fair amount of sediment on the screen, which I cleaned with a couple of shots of brake cleaner. Also got around to putting a compression fitting on the hardline ( I had the -8AN braided line slid over the hardline and hose clamped, think it was sucking some air). Took a good bath in diesel, feel like a million $$$ right now



Scott W.