Need a fuel system for sniper

[panteramatt]

You guys that switched to fitech or sniper efi, I have the sniper kit but now need to build the fuel side of it. I have a 23 gallon tank in my 74 bronco and I dont wanna sell it to get one with a pump in it SO I need to build a kit with an external pump. Any suggestions on pump, lines, fitting etc and where to get them?

 

[pfdff1115]

Holley EFI 526-5 EFI Fuel System Kit, Tee return into your fuel fill overflow.
and you will need to pump low as possible on frame rail close to tank.

 

[panteramatt]

I have the aero tank. I remember there being like 2 or 3 smaller ports on top of the tank that weren't used. Could I use one of them for return?

 

[migs]

I installed a sniper on my Bronco with an Areo tank and an external fuel pump. My Areo tank does have a return line provision. I used a Bosch fuel pump, part number 69100 I think. Due to my exhaust set up my only real option for mounting was on the outside frame rail right above the front leaf spring mount. It does have a one inch body lift. The pump has had no issues pulling fuel from there, even with low fuel in the tank. I have a standard pre filter before the pump and a wix filter after it on the high pressure side. (I forget the filter number) I just ran 3/8" fuel injection hose the whole way along with a combination of adapters and AN fittings to tie it all together.

Another option is to use a corvette c5 fuel filter/regulator after the fuel pump, it drops the pressure to 58psi and has the return port to send the extra fuel back to the tank. This allows you to run a single feed line up to the tbi unit and just cap off the return port on the sniper unit.

I just installed this set up on a friends 69 gmc pick up, it's working great.
the first pictures are my Bronco, the last picture is the gmc with the corvette filter/regulator.

 

[Broncobowsher]

There are so many different ways to do this. The tank (stock and your aftermarket) don't have any good baffling. So a low tank of fuel and the right driving can leave the pickup starved. I recall the aftermarket tank has the pickup in the corner. The old solution is the 2-pump system with an accumulator. Even the factory did this on the early EFI. The newer fix is to put a modern fuel pump chamber inside the tank. It can be tricky with a small access hole but the Holley hydromat with the magnets to the center bottom of the tank as a new pickup and the supply line re-purposed as a return is probably the best without going to an in tank pump. Or just know that you have to keep the fuel level up.

Hose has to be EFI rated. 3/8" is the common size everything is setup for. After dealing with poorly aging aftermarket rubber hose my go to hose is now the Earl's Vaporgaurd that has the barrier liner to protect the rubber from the modern fuels.

Pumps are another one that gets tricky. The sniper runs a higher pressure EFI pump. The old standard pump only needed to maintain flow at 40-45PSI. The Sniper runs at 59.5 PSI. The design also matters. An impeller design like the Bosch 044 is a great pusher but has little to pull. But a roller vane Airtex E2000 will pull fairly well. Flow rates need to match the HP level. Monster flow pumps sound like a good idea but you are just moving the fuel around faster, heating it more, the pumps are a bit more stressed.

Filters are a lot harder to figure out than I thought. I finally settled on a WIX filter for GM applications. Got some adaptors for the O-ring connections. It will feed a factory EFI V8 and has a nice 2-micron rating.

 

[AZ73]

Because I run 2 tanks, I run a carter low pressure outside the tank to my 6 port valve, and a Bosch high pressure after it. The return line goes into one of the ports on the 23 gal tank.

 

[KyleQ]

As everyone has stated, mount the pump off the frame rail close to the tank and it will be fine. I can draw my tank bone dry with just the high pressure pump with my FiTech setup. With the stock tank and fuel cell I've never had issues with starvation even at odd angles, but I don't typically let my fuel level get lower than a quarter tank when I'm crawling. When I'm cruising around it will pull the tank dry - I know I REALLY need fuel when I can start to hear my fuel pump.

 

[panteramatt]

Kyle, do you mean mount the pump ON the frame rail? Also what pump are you running and how is it?

 

[BanditBronco]

any 80's F150 will have a frame mounted pump, the bullnose or square body style trucks. You can get a pump for them pretty much anywhere, amazon, local parts store etc. I would go to the junk yard and grab the pump and the mount for it. Makes it super easy to install, just reuse the mount. Then if that pump works you have a spare also.

 

[KyleQ]

This pump - feeds my healthy motor just fine.

https://smile.amazon.com/gp/product/B00AC5LDIG/ref=oh_aui_search_asin_title?ie=UTF8&psc=1

Precise 402-P2000 - ELECTRIC FUEL PUMP & KIT | Fits Ford, Lincoln, Mercury, Merkur

 

[ntsqd]

any 80's F150 will have a frame mounted pump, the bullnose or square body style trucks. You can get a pump for them pretty much anywhere, amazon, local parts store etc. I would go to the junk yard and grab the pump and the mount for it. Makes it super easy to install, just reuse the mount. Then if that pump works you have a spare also.

That is all true, but the systems those were designed to work with are lower pressure than this aftermarket EFI.

Somewhere out there in the kit airplane world there is a thread where a guy did a lot of testing of EFI fuel pumps. For some reason airplane guys tend to be anal about things working right all of the time. It is worth the time to find and read it. The results aren't what you'd expect.

I've been using the Wix GM EFI fuel filter for a number of years. Even on non-EFI vehicles. The adapter fittings are called "O-Ring Bump" and are the same design late Saginaw PS steering boxes and PS pumps use. Thread size for the filter is 16mm. Summit has the fittings in both steel and aluminum. For fuel I'd use aluminum.

Gates also has an "emissions barrier" EFI rated hose with that inner liner. Not cheap, but usually can be had locally. I use it on the "Push-loc/Barb-tite" type of hose end and it works fine even though its not designed for them.

 

[Broncobowsher]

And if you do any rubber hose INSIDE the gas tank. There is a special submersible fuel hose just for that. You will regret it if you don't use it. Normal fuel hose is only designed to be resistant on the inside, not the outside.

 

[BanditBronco]

That is all true, but the systems those were designed to work with are lower pressure than this aftermarket EFI.

Somewhere out there in the kit airplane world there is a thread where a guy did a lot of testing of EFI fuel pumps. For some reason airplane guys tend to be anal about things working right all of the time. It is worth the time to find and read it. The results aren't what you'd expect.

I've been using the Wix GM EFI fuel filter for a number of years. Even on non-EFI vehicles. The adapter fittings are called "O-Ring Bump" and are the same design late Saginaw PS steering boxes and PS pumps use. Thread size for the filter is 16mm. Summit has the fittings in both steel and aluminum. For fuel I'd use aluminum.

Gates also has an "emissions barrier" EFI rated hose with that inner liner. Not cheap, but usually can be had locally. I use it on the "Push-loc/Barb-tite" type of hose end and it works fine even though its not designed for them.

what fuel pressure is required for a sniper system?

 

[panteramatt]

I believe the sniper needs around 58-59 psi. Kyle thanx for that pump but I wonder after finding all the filters, hose, fittings etc would it be worth it over the sniper fuel kit?

 

[ntsqd]

And if you do any rubber hose INSIDE the gas tank. There is a special submersible fuel hose just for that. You will regret it if you don't use it. Normal fuel hose is only designed to be resistant on the inside, not the outside.

This. Quoted to emphasize it.

 

[toddz69]

And if you do any rubber hose INSIDE the gas tank. There is a special submersible fuel hose just for that. You will regret it if you don't use it. Normal fuel hose is only designed to be resistant on the inside, not the outside.

SAE 30R10 hose is what you're looking for inside the tank.

Todd Z.

 

[BigB]

I used the same pump as Kyle after reading his recommendation with my fitech.

I'm using the corvette filter after seeing it used successfully here and all over the net.

anfittings.com has pretty cheap prices but I ended up getting my hose and fittings on Amazon as I can't live if I don't get things delivered in 2 days ;D

I still came out around a $100 give or take cheaper than one of the put together kits.

I think the fuel pump was on sale for around $15-18 maybe $20 when I got it, so I purchased 2.

I can't get over how quiet this pump is.