2001 fuel system
Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
That is actually a high pressure needle valve. They are often used for flow control because of the fine adjustment they provide. I like using them as throttle valves on natural gas oilfield engines in situations where there just isn't a lot of fuel gas available. I can fine tune the mix to run a little on the lean side to conserve fuel. Also good for slowing an engine that's really just to damn big for the job. I can set the governor to hold the butterfly closed, then use the idle screw to just crack it open a hair. The needle valve lets me bring the fuel flow much lower than a ball valve ever would but still have the option of opening her up when needed. So technically it is capable of kinda working as a regulator, but still janky AF and several better easier and simpler ways to to do the job. Did this used to be a farm truck? I see farmer engineering written all over this setup.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
I only do that kind of stuff on old single cylinder oilfield iron when the operators don't want to spend the money to do it right. They think it's cheaper to continue paying me to "just get it running". All I can do is tell them what needs to be done, it's their motor and their money. I'll tell him the risks but if the man says just make it run I'll make it run. I can make most anything ru, provided it's still in the correct number of pieces. Not much I can do when a piston decides it wants to focus on it's solo career and doesn't need things like connecting rods or crankshafts holding it back.
Mountain Pass
Joined: May 2022
Posts: 212
Likes: 44
I would hit up a pick n pull and scavenge as many stock parts as i could, and replace everything. Buy whatever i couldn't find.
Get new gaskets of course. They way those fuel lines are bent without support, i would be worried about their integrity.
THat looks like a fire hazard.
Get new gaskets of course. They way those fuel lines are bent without support, i would be worried about their integrity.
THat looks like a fire hazard.
Logistics Pro
Joined: May 2017
Posts: 4,667
Likes: 1,455
From: Muskogee, Ok
We use em at work on bearing lube flow to dial in the flow rates @ manufacturer specs so it doesn't blow the seals out.
Typical bearing. That's a 3" wide strap, and a 40"x48" pallet.
Was a premature failure at only 12 years due to failed flow meter
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
What do y'all think the Riff Raff frx kit is? It just takes away the adjustability by using an orifice instead of a valve. Granted it retains the fuel bowl, but that's really only a fuel filter housing at that point.
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Cargo Master
Joined: Apr 2022
Posts: 3,201
Likes: 1,704
The frx still uses a factory regulator to actually control the fuel pressure though. Slightly different then setup this post is about. lol
Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
This is my setup. Delete the bowl of course. Tig welded an L bracket out of 1/2” 6061 aluminum with bosses to stand off of the mounting point of the fuel bowl. Tapped the bosses and the top to accept my fuel distribution block. All distribution hoses to the 4 corners of the heads are RiffRaff which all are “uphill” to the block since air will rise up. This brings us to the needle valve with the orange hose that goes back to the return line since I am not using the OEM method of fuel delivery any longer. The valve is used to purge air back to the tank in case I need to bleed the air off. I have a FASS system which delivers the fuel via the large blue hose, so I have fuel pressure regulation back at the FASS system. No more air through the injectors for me. Works very well as the FASS pump runs all the time the ignition is on. I can open and close the valve and the air rises and is forced out. The sensor goes to my EDGE display showing my fuel pressure at all times the engine ignition is on.
Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
That does look nice and also frees up some space. I almost went that route also, even talked to the guy at C&C Fab, I just saw air entrapment which prodded me to go the route that I chose since we both still have dead head fuel systems.
CNCFAB
Joined: Apr 2020
Posts: 4,874
Likes: 2,006
I havent had any air issues on this or my other truck. Can definitely understand your train of thought.
I’m all for diy, yours is especially clean and well put together compared to most that I have seen
Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
Probably about 7-8 months ago. I truly like your design, it is very clean, much more appealing than my approach. In fact, your design was the only other approach that I considered before designing my own. I may just be too **** about air, but I honestly like being self sufficient when I know that I can achieve a solution to a task that presents itself. It is nice getting to know you guys and converse on this forum with you.
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