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Mallory 4150 Fuel pump opinions

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Sportbike,

From what i understand these trucks have a return already correct??? So why can't he just hook up the pump inline near the tank and let it run through the stock lines? He has a guage so if the PSI is to high then upgrade the feed line. If after upgrading the feed line your still to high then go ahead and upgrade the return. But why spend all the $$ if its not needed. To the tank and back is well over $200 of hose and fitting EASILY.
Clark
 
Earles Fittings was closed before I drug my dead a$$ out of the house. Will have to wait untill next weekend now... thats when I am planning on doing the Bill K converter and VB. Going to be a wrench turning, tool throwing, nail biting, holloring and cussing time! Cant wait!!!!

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Always ready to help!
2000 2500 Red Sport quad cab, 4x4, K&N, DDI's, straight piped, boost, pyro and fuel pressure gages, Hot Power Edge, EZ box, mean looking set of 33. 5" tires, Snap On diamond tool box, Marine Corps window sticker, Semper Fi!

1972 340 Cuda'. Original tripple Black, 340 car w/air. Good clean car, super stock springs, Weld Prostars, shaker hood, strong 340 with a 727/4000 stahl, 4. 56... . Bombs away!
NRA Life Member
My Diesel Page
 
If anyone cares to see the direction sheet with a diagram on how it works, email me. I scanned it. I would post it but have not quite got that to work for me yet.

It might give some of you some ideas on how to do yours if you ever want to.

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Always ready to help!
2000 2500 Red Sport quad cab, 4x4, K&N, DDI's, straight piped, boost, pyro and fuel pressure gages, Hot Power Edge, EZ box, mean looking set of 33. 5" tires, Snap On diamond tool box, Marine Corps window sticker, Semper Fi!

1972 340 Cuda'. Original tripple Black, 340 car w/air. Good clean car, super stock springs, Weld Prostars, shaker hood, strong 340 with a 727/4000 stahl, 4. 56... . Bombs away!
NRA Life Member
My Diesel Page
 
Back to the top. I spoke with Mike at A. W. D. today and he checked my fuel pressure while my truck was there for a McLeod install, among other toys. Anyway, at near WOT my truck is reading 1-2psi's. I spoke with Mike about the Mallory 4150 and that's what I'm going to put in. I can't see driving around with a lift pump just waiting to die and taking the VP44 with it. I have A Spa gauge on order and will post the psi's from the Mallory when it(and the Gauge) are in.
Chad... Thanks for the heads up on what hopes to be a great pump.

Scott W.
 
I put the BG220 in today. I have it set to flow 13-14psi to my filter and injection pump. I did put the regulator/bypass in and t'd into the fuel return line from the injection pump. All is well so far. Took it for a short 10 mile drive to see how it worked. At full throtle all boxes on I was at 12 psi. I use to hit 1 psi at this point with the stock lift pump. I think this is going to be a good fix. The truck seemes to run better with it. Before it made noise but didnt go too far. Now you get some action with the revs it seems like. Very nice!
 
Chad, I am VERY interested in your ongoing evaluation of the new pump. Where did you mount the new unit? Also what other modifications if any have you done to the stock fuel system - fuel return, feed from tank to fuel pump, fuel pump to filter, filter to injection pump? How did you do for time and difficulty on the install?
 
I bolted it to the frame on the drivers side right before it (the frame) starts to curve up for the front end. Nothing was hard about it, just time consuming because there was no proven knowledge on the idea, and no one was for sure if the regulator was needed. Wasn't sure if the pump would be noisy or not, so I put a small piece of rubber between the pump and frame... the pump ended up being very quiet, but quiet to me and quiet to you could be two different things. I removed the factory lift pump (3 nuts and its gone). I cut the power plug in and spliced in some longer wires to run to the new pump... nothing difficult, just a hot and ground wire. I also removed all the banjo bolts (injection pump/fuel filter) on the fuel system and bored the tiny holes out to about twice their original size for better flow.

There are two fuel lines running from the tank to the engine. The top one is RETURN, and the bottom one is SUPPLY. They are aluminum lines 70% of the way to the engine from the tank, then they turn to a plastic line with rubber covers on the outside. I cut and spliced into the aluminum part of the lines. Nothing fancy. I am not going to go with any 1/2" fuel lines. That's too much money, and I have plenty of fuel now, that I need not worry.

Off the top of my head, here is what you will need. Not exactly sure on the NPT sizes (lots of cold and pain medicine in my head right now) but you will get the point.

3 foot of rubber 3/8" fuel line, 2 foot would probably do. I always go big.
10 hose clamps for the 3/8 line.
2 barbed 3/8 "T". One for the RETURN line, and one for the SUPPLY line. I will think of the rest as I type.

BG220 Electric fuel pump (street version) and regulator.
The pump takes two big o-ring style fittings. I dont know what size, I had a couple that worked in my private stock at home. I ended up rigging it up so that the end result was 3/8" barbed fitting on the "IN" side, and 3/8" barbed fitting on the "OUT" side.

The regulator has 3 holes (IN, RETURN, P/O). The "P/O" is a pressure gage port. I blocked this hole off with a pipe plug. On the RETURN and IN holes, I put 3/8" barbed fittings on each.

Cut the bottom fuel line about 6" from the new pump and connect the pump "IN" port and bottom line with a couple hose clamps and 7"-8" of rubber fuel line. On the "OUT" side of the new pump connect it and the other side of the bottom line you just cut with more rubber hose and hose clamps. You now have plumed the pump inline with the "SUPPLY" line to the engine.

Go forward about a foot and cut the SUPPLY line again. Put a barbed 3/8" "T" in place utilizing the rubber hose and clamps again. With the "T" facing up, run a rubber hose from it to the "IN" port of the regulator, which is mounted between the RETURN and SUPPLY lines to the engine. Now go to the "OUT" port of the regulator and run some hose up to the "RETURN" line. On that "RETURN" line cut it and plumb in the other barbed "T", and hook the hose from regulator "OUT" to it.

I 'm sure I made it sound more complicated than it needs to be, but all you are doing is putting the pump on the SUPPLY line. Putting the regulator on the SUPPLY line down stream from the pump. Run a hose from the regulator OUT port to the RETURN line. The hardware you use to accomplish this is up to you.

Once you have it all set up, adjust the regulator so that the injection pump sees about 12-13 psi of fuel.

Let me know if you dont get any of this.

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Always ready to help!
2000 2500 Red Sport quad cab, 4x4, K&N, DDI's, straight piped, boost, pyro and fuel pressure gages, Hot Power Edge, EZ box, race transmission, Barry Grant fuel system, mean looking set of 33. 5" tires, Snap On diamond tool box, Marine Corps window sticker, Semper Fi!

1972 340 Cuda'. Original tripple Black, 340 car w/air. Good clean car, super stock springs, Weld Prostars, shaker hood, strong 340 with a 727/4000 stahl, 4. 56... . Bombs away!
NRA Life Member
My Diesel Page
 
Articat,
You must be reading my mind again... I am watching Chad's progress as well.

This kind of stuff pays for the annual TDR fee!

If you start ordering parts, let me know so we can double it up!

David

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99' SB 4x4 : DDI's, HOT PE, SPA dual gauge, ESPAR, Line-X OTR, Ladder bars, AMSOIL, etc (GPS,Cell,CB,... . )
Green Monster
 
The Mallory 4150 is what HVAC is running, it is internally regulated, so no need for the 3rd port (bypass outlet). I guess when it reaches the regulated pressure the excess is bled back to the intake side of the pump or something, instead of externally through the 3rd port. I think what Chad has done is a very good setup, but those wanting to do less plumbing the 4150 should work well for them. That is what I will probably do when my tank-mounted OEM lift pump starts to fail. I will probably drop the tank and mount it inside the frame rail, for protection. I also read (probably on the TDR) that it should be mounted below the top of the tank level (to aid in priming, also less aeration tendency I suppose).

Vaughn


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'01 2500 QC Shortbed 2wd, 6-speed, 3. 54LSD, Cab & Fog lamps, Camper & Tow Pkg.
BOMBed: RV injectors, PS Boost module, Amsoil air filter, straightpiped exh. , Aeroquip 3/8" fuel line w/tank mounted lift pump, AutoMeter Sport Comp gauges, Line-X'd, Amber turn signal conversion.
Mildly BOMBed Performance: 0-60 @ 10. 0 sec. ,
40-60 @ 5. 5 sec. ,
0-100 @ 24 sec.
 
I think the last email I got from HVAC on this, he said use the regulator. About 7 out of 10 people said to use it. I like it now because I can adjust the rate of flow. With the regulator off, I was getting 20 psi of fuel pressure... thats a wee bit too much. Turn the set screw and you got it at 12psi. Thats more like it!

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Always ready to help!
2000 2500 Red Sport quad cab, 4x4, K&N, DDI's, straight piped, boost, pyro and fuel pressure gages, Hot Power Edge, EZ box, race transmission, Barry Grant fuel system, mean looking set of 33. 5" tires, Snap On diamond tool box, Marine Corps window sticker, Semper Fi!

1972 340 Cuda'. Original tripple Black, 340 car w/air. Good clean car, super stock springs, Weld Prostars, shaker hood, strong 340 with a 727/4000 stahl, 4. 56... . Bombs away!
NRA Life Member
My Diesel Page
 
Chad, does the BG pump prime when turning the key like the old OE lift pump?

My float in the tank is bad again so the tank will be coming down again soon and I will probably change pumps.
 
Bart, I wouldn't put another pump inline unless there was a regulator between it and the injection pump. I don't think it is good for the injection pump to run more than 13-15psi at it all the time, and you would probably be well past that at idle. Another issue is wiring in the 2nd pump, if you use the same power supply I would definitely wire in a relay since 2 pumps would probably overload the circuit.

Vaughn
 
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