Homemade fuel system
 

Has anyone made their own fuel system? That is similar to a fass or an air dog but doesn't cost near as much.

Back in the day i used to buy remote filter heads, make a bracket and put them on the frame rails, and use a holey blue for a pump, worked good for me and a couple of customer trucks, they are still running them. Also use the same filter system and run a walboro pump, but they get a little pricy though.

I did the same thing with the frame mounted filter and ran a dual pump system that I could manually adjust which pump or if both pumps ran at any one time. I also have my own invention fuel pick up system that I've been using for years now.

ok thanks guys that gives me something to work off of. You guys wouldn't happen to have any pictures of your set ups would you?

Bulkhead Fuel Feed. https://www.dieselbombers.com/dodge-...tml#post249502

Dual Lift Pumps. https://www.dieselbombers.com/5-9l-2...p-install.html

Uncle Bubba, what pumps are those, and why duals?

I don't remember at all a brand on those particular pumps. They were from a one guy shop out in California. His pumps were huge in the drag racing world for gassers but this was an experimental try at the diesel world that didn't work out. PE maybe for a brand name.

As to the why well the main reason was that if one failed I wasn't roadside trying to install a spare, I just flipped a switch and kept on truckin. But it also served as a way to control fuel pressure on the fly. I had each pump set to 18psi so that for daily driving either one was fine on it's own but if I was towin heavy or playin on those hot days I could turn on the second pump and never fall below 20 psi no matter what. I didn't want over 18psi all time because it leads to other problems but when the VP needed extra cooling and I needed to feed the fire a little more I wanted the extra flow.

so you want a pump that will keep the fuel pressure at about 18psi and you just ran dual pumps just in case one crapped out on the road then did you tie the power to the pump into the key switch so it would come on and stay on whenever the keys on?

For any electric pump always use the same trigger wire as the factory pump uses, This will save you some serious issues as time goes. In my case this trigger wire went from the computer to my switch that in the up position ran one pump, down ran the other and the center turned both on. This way there was no chance for me to be stupid and forget to turn a pump on.

A good psi differs depending on who your talking to, 18psi is good for me. I have always set my pressures so that I never go above 22psi or below 18psi no matter what I do. The Hillborn Bypass I listed in the write up ensured that Anything above 22psi was returned to the tank.

A little correction here: I forgot this was being posted in the 12V section, I can't tell you what your ideal pressures would be. I'm clueless on the P-Pumps.

im making a system for mine..... it involves a jegs alcohol pump, 1/2 line, a remote filter, and all the fittings..... im going to be running 100psi through mine all you have to do is change pump fittings...... im going to have under 500 in all mine and IMO its better than any fass/airdog

Another UNOH'er eh. Some of your instructors helped in the design of my system here.

nice and yeah im a unoh'er hate to claim it at times..... im the diesel club vp..... we are builing a 1st gen with a 24V cummins and a Mack P-pump..... :w2:

but yeah i love to make my own stuff and show them boys that big bucks aint everything ..... heck depending on the turbo that im looking at i might not even do 2.6 cause of this small 72 im looking at....

On a p-pump more flow is better, a lot of psi wont hurt it either, they feed off a lot of fuel, the electric pumps dont need that kinda pressure.

With the write up I posted, it can be used for any pumps you want to use, and any pressure you want them to pump at. All the plumbing and needed supplies are the same, even the Hillborn Bypass is adjustable to any pressure you want.

are they even making any progress with that thing? last i knew it was sitting on the cross member and just had engine mounts fabbed up for it; but this was back in june when i graduated. if you guys are slamming a p pump on it i'm guessing you gave up on the electronics? and yeah claiming to be from UNOH isnt everything there are some real "special" guys around there haha as for 100psi why exactly? just seems over the top.:pca1:

yes the motor is in.... the pump is almost done for the truck..... and we are hoping to have it done june 5th for Buckeye Blast

Ok.....
I'll bite and ask the dumb question since no one else has....
WHY would you run 100psi with a P-7100?.
Its been proven already that any pressure above 45psi with a P-7100 adds ZERO power and is uneccessary.

REALLY???????.....
And may I ask,what FACTS do you have to back up this theory?....I'd say none.
Do you even know what either of those fuel systems do for your truck or have you ever seen the benefits you gain with either brand?........Again,I'd say no.
IF you did understand what the FASS or AirDog did for your truck then you would have not made a uneducated statement like you did above.

Volume is a good idea with a P-7100 but there is no advantage to going any larger than 150gph.A 150GPH system will handle any built P-7100 that is around today.I would say the only P-7100 that a 150GPh system would not be able to handle is a Sigma Pump and I'd say if you can afford one of those then a "cheap" fuel system would not be in your mind.

Again on PSI with a P-7100....
There is ZERO advantage in running any more than 45psi with a electrical fuel system on a P-7100.No power is gained and if you have a high volume pump there will be no chance of cavatation.

Here is what I do not understand when I see posts like this and some of the responses....
You can buy a AirDog 100 most places for about $500 and a FASS Titanium Series for about $550 and yet we still say that it can be done cheaper.You may build a fuel system for your truck at a lower cost but you will not build one that gives you the benefits of either a AD or FASS for less.I have ran the filters on my FASS over 50k and when they were changed they were cut apart to look them over and they could have gone another 50k or more easily.I know that Charlie,who owns PureFlow(AirDog) told me at Numidia last year his system on his truck(a AD-100) has had the same filters on for 5 years and they still did not need changed.

You guys say you can build them cheaper,try it and see how the long term benefits of your homemade system goes.I have had the motor on my FASS fail and when it did the warranty covered it and had me running within 2 days.The pump was over 2 years old when it failed,who is going to warranty your homebrewed systems,YOU out of your pocket.I am amazed when I see posts like this because it shows your lack of research of all the benefits of a good fuel system........:argh::argh::argh::argh:

Whoa big big dog. I never made any claims on anything I posted about being better or cheaper. I built my dual pump system that I posted before FASS, AirDog or MITUSA ever hit the market and it was the best solution I found at that time. I still think that for particular applications it may still be a viable option, for instance if somebody has the pumps to use for it already on hand such as I did at the time.

Personally by choice I will never go back to an electric motor driven pump again, I love this belt drive system. The harder I push my truck the more fuel it pumps just the way it should be instead of the other way around.

I dont think he was directing that at you...but Im guessing.

The thing I dont understand - is that doesnt anyone account for the time you spend and expense from running all over the place to find the parts to kluge together to make a cheaper fuel system?? Airdog, Fass, and another I wont mention have a proven product and all the work, reseach and running around is already done for you. Its the same as the guys who drill out banjo bolts to get more flow - why the hell would you dink around with that when you can buy bigger ones??...lol. JMO.