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Go Back   Dodge Cummins Diesel Forum > 3rd Gen. Dodge Cummins 03-07 Common Rail Forums > 3rd Gen. Performance Parts Discussion > Lift pump questions: mechanical vs electric
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Thread: Lift pump questions: mechanical vs electric Reply to Thread
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Topic Review (Newest First)
09-06-2013 04:42 PM
907aumick
Lift pump questions: mechanical vs electric

Is anyone running an assassin mechanical pump on there daily driver? If so how is it performing any issues and would it work good with my setup?
01-03-2013 12:40 PM
TCDiesel Yep.. At this time Fuelabs and I have had little to No contact,I won't fully support or endorse until that happens,There products do look promising.The cost needs to be consider, But if the only compliant you have is the cost at times thats good.BC its gin's and smile's after that.
01-03-2013 11:36 AM
RyeThomas Yeah brother I was real excited about Fuelab, and boy were they hard to find info on. One of the supporting Vendors had them up on there site (I can't remember who) but even they didn't have much info. The kits are very expensive and I still never got an answer on the electric side. It appeared you could get an install kit that contained plumbing but the electronic side seemed you were on your own. This was a few months ago so maybe things have changed. None the less they are Steep.
01-03-2013 11:27 AM
Sylvester Stallone
Quote:
Originally Posted by RyeThomas View Post
They are all around $590, and that's equal to the lower end Fass and AirDog 150s.

So yes if you want the lower end 150s they will be a little cheaper because you Should add a Vulcan or GDP filtration kit with the Assasin (add $100 or so). But to avoid another electric POJ pump that is prone to failure I will go Mechanical every time.

And don't even mention Fuelab, I'm not spending $1000 for a 100gph pump with install kit, so I'm certainly not paying the small fortune for their 200.
Rye, Fuellab is the only ones I had seen prices on and assumed they were all reasonably close, good to know the others aren't that bad though
01-03-2013 11:05 AM
RyeThomas
Quote:
Originally Posted by mgrahambo View Post
I just cant justify the cost of Mechanical pumps, so I vote FASS. You couldn't pay me to risk running another Air Dogg, when mine dies so does my business with them.
They are all around $590, and that's equal to the lower end Fass and AirDog 150s.

So yes if you want the lower end 150s they will be a little cheaper because you Should add a Vulcan or GDP filtration kit with the Assasin (add $100 or so). But to avoid another electric POJ pump that is prone to failure I will go Mechanical every time.

And don't even mention Fuelab, I'm not spending $1000 for a 100gph pump with install kit, so I'm certainly not paying the small fortune for their 200.
01-03-2013 10:36 AM
pocketgunner
Quote:
Originally Posted by raymondd View Post
Ok so you are putting the drawstraw directly into the fuel module?
Or is this for airdog fuel module upgrade kit?

Does the DTT come with a pressure regulator?
Yes you can install directly into the fuel module or install a sump whichever you prefer. The pump doesn't come with a regulator perse it regulates max psi based on the internal gearing of the pump, basically depending on which gears you choose it will only max a certain psi period
01-03-2013 10:36 AM
TCDiesel Another side Point, Install down stream adjustable Pressure regulator, electronic pumps should AWAYS run at Max capacity (Don't choke them down on the vacuum side or Pressure side) Fuelabs has a on demand pump that looks promising.

Fuel coolers are another addon-but if you keep 1/2 tank or more aways on DD use you should be good, I aways try to keep My tanks full when 90*+, that return fuel form the CP3 and back leakage form injectors can reach 135* and if you you only have a few gallons in the tank it only going to raise on hot days.
01-03-2013 10:32 AM
kycrane Ill be keeping up with this. Some good info so far.


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01-03-2013 10:25 AM
TCDiesel The problem is All electronic Pumps will fail (Mec pumps slowly die after 1000s of hrs) every Diesel I own with electronic pumps installed have bypass or 2 Pumps,If you go electronic plumb in a bypass, that way way it fails you can start the truck off with either the GP will take it form there,just don't shut the truck off and loose the prime, if you do shut it off by accident just start it right away in most cases it will start right up, or just start it again on either.If you have the factory in tank pump installed the trick will NOT work ,YOU cannot pull fuel through the OEM Pump, its a Tow...UGH.

Here's My scale
1.Mechanical
2. Fuelabs with Bypass
3. Fass With bypass

Air is not a problem in CR. its a long and controversial subject But thats My opinion base on 30 Years of Pump experience.
01-03-2013 09:48 AM
Sylvester Stallone I just cant justify the cost of Mechanical pumps, so I vote FASS. You couldn't pay me to risk running another Air Dogg, when mine dies so does my business with them.
01-02-2013 09:09 PM
RyeThomas Assassin plus filtration and be done with it.
01-02-2013 08:40 PM
raymondd Ok so you are putting the drawstraw directly into the fuel module?
Or is this for airdog fuel module upgrade kit?

Does the DTT come with a pressure regulator?
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