In-tank fuel pump mod completed
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FTE Chapter Leader
Joined: Jan 2005
Posts: 13,111
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From: Henderson, NV
Originally Posted by Kwikkordead
Excellent. Enjoy the sound of properly fed injectors now. No more cackley idle. 
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FTE Chapter Leader
Joined: Jan 2005
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From: Henderson, NV
Originally Posted by 99SevenPoint3
looks almost like a custom kit ... real nice ....just out of curiosity does it have a lil more pick up and go say around 60-70 ? or is the secondary pump just to help the factory one...
Elder User
Joined: May 2007
Posts: 691
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From: Florida
well ive see quite of few ppl on here do the addition by that i mean they put what i call a helper pump on a few trucks,but ive only seen you and kwik with the pump inside the tank ... interesting if u dont mind me asking about how much did you end up spending on the whole set up you got ...
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FTE Chapter Leader
Joined: Jan 2005
Posts: 13,111
Likes: 4,716
From: Henderson, NV
Originally Posted by 99SevenPoint3
well ive see quite of few ppl on here do the addition by that i mean they put what i call a helper pump on a few trucks,but ive only seen you and kwik with the pump inside the tank ... interesting if u dont mind me asking about how much did you end up spending on the whole set up you got ...
I spent about $400 on the entire setup. The fuel filter alone was $250. Get rid of that and the mod becomes pretty economical.
Logistics Pro
Joined: Nov 2006
Posts: 3,674
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From: Fallon,NV & Bainbridge OH
That is a nice set-up, it look great, I like all thought that went into it. I too was wondering what you had into it, glad to see that it was not that much. The only thing I want to know is what if you plug up that filter in the tank, what a pain that will be to change. I agree pressurizing the whole fuel system is a positive to avoid sucking air, what are your thoughts of an inline filter on the frame with the rest of your system? That way the filter is easily changed and still is under pressure so no air gets in.
I may have to do something because the ongoing thing from my wife is any modification I do makes it "smother and quieter" and it would be nice if a mod really did do that.
Man, I enjoy getting back into the motorhead stuff after being away from it for to long.
I may have to do something because the ongoing thing from my wife is any modification I do makes it "smother and quieter" and it would be nice if a mod really did do that.
Man, I enjoy getting back into the motorhead stuff after being away from it for to long.
Elder User
Joined: May 2007
Posts: 691
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From: Florida
$150 bucks doesnt seem to much ... especially if it helps that much more... Im also wondering the same thing as truckeemtnfords when he asked about that inline filter on the frame ...would that be a good thing or bad? seems it would be easier to change out
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Fleet Owner
Joined: Jun 2004
Posts: 25,090
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From: Rio Rico, AZ.
The thing to remember on putting a filter inline on the frame is that it's pressurized now because the fuel pump is in the tank. It is also carrying the full volume of fuel flow that the pump is putting out. Not just the fuel that the engine is using in the injectors, but the fuel that is also being sent to the fuel filter housing up front and the excess volume that is returning to the fuel tank via the pressure regulator. Expect to see flow rates of around 30 gallons per hour.
I use a fuel pump that was designed for use on a 1983 VW Rabbit. A very small car compared to the PSD. The pump on the VW is around 10% larger than the pump for the truck and the fuel filters are about 5 inches long and 3.5 inches in diameter and they get changed out every 15k. The are also designed to operate at the 73psi system pressure of the Bosch KE-Jet fuel injection. I would have one on my truck now, but it doesn't have a water separator. So I'm still relying on the stock fuel filter up front. I have to change it every 5k and even at that it's black when I take it out.
I use a fuel pump that was designed for use on a 1983 VW Rabbit. A very small car compared to the PSD. The pump on the VW is around 10% larger than the pump for the truck and the fuel filters are about 5 inches long and 3.5 inches in diameter and they get changed out every 15k. The are also designed to operate at the 73psi system pressure of the Bosch KE-Jet fuel injection. I would have one on my truck now, but it doesn't have a water separator. So I'm still relying on the stock fuel filter up front. I have to change it every 5k and even at that it's black when I take it out.
Posting Guru
Joined: Oct 2007
Posts: 2,225
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From: Farmington, Minnesota
Originally Posted by Kwikkordead
The thing to remember on putting a filter inline on the frame is that it's pressurized now because the fuel pump is in the tank. It is also carrying the full volume of fuel flow that the pump is putting out. Not just the fuel that the engine is using in the injectors, but the fuel that is also being sent to the fuel filter housing up front and the excess volume that is returning to the fuel tank via the pressure regulator. Expect to see flow rates of around 30 gallons per hour.
I use a fuel pump that was designed for use on a 1983 VW Rabbit. A very small car compared to the PSD. The pump on the VW is around 10% larger than the pump for the truck and the fuel filters are about 5 inches long and 3.5 inches in diameter and they get changed out every 15k. The are also designed to operate at the 73psi system pressure of the Bosch KE-Jet fuel injection. I would have one on my truck now, but it doesn't have a water separator. So I'm still relying on the stock fuel filter up front. I have to change it every 5k and even at that it's black when I take it out.
I use a fuel pump that was designed for use on a 1983 VW Rabbit. A very small car compared to the PSD. The pump on the VW is around 10% larger than the pump for the truck and the fuel filters are about 5 inches long and 3.5 inches in diameter and they get changed out every 15k. The are also designed to operate at the 73psi system pressure of the Bosch KE-Jet fuel injection. I would have one on my truck now, but it doesn't have a water separator. So I'm still relying on the stock fuel filter up front. I have to change it every 5k and even at that it's black when I take it out.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Originally Posted by jhand124
So does putting the pump in the tank eliminate the need for other fuel system upgrades like diesel site's CPR or ITP's, assuming you still have a regulated return? For some reason the whole fuel upgrade thing has me confused.
A regulated fuel return is better than the factory filter setup on the engine.
But IMO you need a very large fuel filter setup somewhere between the pump and the engine that would be easily changed and can withstand the pressure of the fuel system.
Most fuel filters are designed with a maximum flow in mind. I pulled an old Dahl type setup off of a Rabbit once and the flow rate said .6 gph on the side of the housing.
Our setups use around 30 gph. So I'm still looking for a suitable substitute. FN74 had a good setup on his truck last time I saw it nearly three years ago. Long before he finalized his Cackle cure kit. He had a remote mounted flange with a very large spin on type filter. The filter was nearly as big as the oil filter on the engine.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Originally Posted by TurtleRacing
Does air in the diesel cause higher EGT's??
PSD Addict
Joined: Nov 2006
Posts: 731
Likes: 0
From: Michigan
Thanks Izzy, all these fuel mods confuse the heck outta me. I think I understand all the rest of the truck but there seems to be sooooo many things for fuel delivery, I'm really not sure yet which way to go. I like the idea of an in tank pump, it makes allot of sense.
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
Originally Posted by TurtleRacing
Thanks Izzy, all these fuel mods confuse the heck outta me. I think I understand all the rest of the truck but there seems to be sooooo many things for fuel delivery, I'm really not sure yet which way to go. I like the idea of an in tank pump, it makes allot of sense.
You won't get any better than that.
PSD Addict
Joined: Nov 2006
Posts: 731
Likes: 0
From: Michigan
Originally Posted by Kwikkordead
The absolute best system at any price is to mount the pump in the tank. And then get a full flow, regulated fuel system that runs the full volume of the fuel through a fuel filter capable of flowing 30 gph, then through the heads, then through the pressure regulator, then the excess is returned to the tank.
You won't get any better than that.
You won't get any better than that.