Anyone mount External fuel pump?

[furious70]

Kinda depends on the pump, etc. But I put mine on the inside of the frame, passenger side, just forward of the axel hump - just where it starts to become level. Keeps it low and (in my case) orients the pump correctly. Highly recommend using isolators in the mount.

Just my $0.02... I would recommend a return as well, but I know a lot of people don't like to have to deal with it.

Walbro 255 has lived on the frame of my fury since 2009 and been fine. It's loud but that's the only issue

 

[kiwigtx]

I started out running an inline Holley pump half-way between the tank and the throttle body, but decided that in-tank was much better. So now I have an in-tank Holley pump the correct rating for the Sniper, and it runs perfectly all the time.

I have had issues with Holley inline pumps....as in they crapped themselves after a short time. One lasted about ten miles.

 

[koosh]

Walbro 255 has lived on the frame of my fury since 2009 and been fine. It's loud but that's the only issue

But is it below the lowest point of the tank? And, is it returnless system?

 

[koosh]

I mounted my old Holley pump on one of the fuel tank mounting bolts. Bent over a header collector flange.
View attachment 1938331View attachment 1938332View attachment 1938333

Very interesting…..i need to come up with something like that…. This is my pump on a different car

 

[Don Frelier]

Yes 66 Charger, it's probably 1" below the tank.
No pickup sock in the tank just a pre-filter.
I do use a return line (stock 5/16" steel line), I bought a 3/8 sending unit and drilled/soldered in a 5/16" piece of line for the return.

Probably worth noting: I did replace my MSD pump this year (10 Years old probably 15,000 miles or more), still worked but got noisy and performance became erratic.
I always ran it as PWM which made it more quiet.
Everything I've read/heard is that it's much preffered to run an in tank pump.

 

[Doorkicker]

Atomic EFI

Not that you asked or care just sharing from personal experiences...

I ran with return-less EFI for a while (Sniper EFI, Atomic, etc.) and in all cases the internal regulator became problematic. I moved to a return-based system with external regulator to get more control... and the byproduct was being able to be more flexible with different TBI, like Terminator X.

Just my $0.02...

 

[Doorkicker]

Very interesting…..i need to come up with something like that…. This is my pump on a different carView attachment 1938337

Wow.. that's exactly what I did before moving to the frame. It worked quite well... until I started really putting demand on the systems and went a different direction. But, what's pictured is a solid solution... been there, done that and was happy with it.

 

[kiwigtx]

Not that you asked or care just sharing from personal experiences...

I ran with return-less EFI for a while (Sniper EFI, Atomic, etc.) and in all cases the internal regulator became problematic. I moved to a return-based system with external regulator to get more control... and the byproduct was being able to be more flexible with different TBI, like Terminator X.

Just my $0.02...

I tried initially to run return-less with the Sniper - as the documentation was confusing at best.

I later found out that you must run a return line and return-less is not good practice.

The Sniper relies on retuning fuel to maintain a flow, and the flowing excess fuel also helps keep the TB cooler. Dead-heading or running a pressure bypass prevents the flow running smoothly and doesn't allow for any cooling effect on the TB.

Besides, a chassis mounted fuel pump is noisy....in-tank is barely audible - at least that is my experience.

 

[furious70]

But is it below the lowest point of the tank? And, is it returnless system?

Yes below and not return less. I used the original vapor return line as a fuel return. The CA emissions stuff was handy for that as it returns it into the corner of the tank.

I wouldn't dead head these days. Or mount another on the frame. None of those in tank modules existed for our stuff in 2009. Or not affordable anyway. I have the Tanks inc setup for my Coronet and as I replace carbs with snipers I would definitely go that route.

 

[koosh]

Probably worth noting: I did replace my MSD pump this year (10 Years old probably 15,000 miles or more), still worked but got noisy and performance became erratic.
I always ran it as PWM which made it more quiet.
Everything I've read/heard is that it's much preffered to run an in tank pump.

Yep, but here is what I’m up against. The car came to me unfinished, and tank empty, thoroughly cleaned. The picture here is where a 5/16 hole drilled into the sender base plate for the pos and neg wires. Note only a rubber grommet used … so im sure once fuel gets to that level it will pour out. I’ve searched and searched for a gas proof leak proof fitting to use there, but all are about 3/4 hole needed. The base plate is not exactly flat, that hole size will not seal. Hence my wanting to go external

 

[koosh]

Yes below and not return less. I used the original vapor return line as a fuel return. The CA emissions stuff was handy for that as it returns it into the corner of the tank.

I wouldn't dead head these days. Or mount another on the frame. None of those in tank modules existed for our stuff in 2009. Or not affordable anyway. I have the Tanks inc setup for my Coronet and as I replace carbs with snipers I would definitely go that route.

Yeah, for an extra $600+
I don’t have that kinda budget

 

[furious70]

What's the delta when you figure in a good pump and filter and return vs in tank return tho?

 

[furious70]

Yep, but here is what I’m up against. The car came to me unfinished, and tank empty, thoroughly cleaned. The picture here is where a 5/16 hole drilled into the sender base plate for the pos and neg wires. Note only a rubber grommet used … so im sure once fuel gets to that level it will pour out. I’ve searched and searched for a gas proof leak proof fitting to use there, but all are about 3/4 hole needed. The base plate is not exactly flat, that hole size will not seal. Hence my wanting to go externalView attachment 1938356View attachment 1938357

Must be some gas resistant silicone that you can seal it up with?

 

[matthon]

In tank pump here with the 'corvette' filter/regulator mounted on the inner frame next to tank.
Maintains 58psi.
All stainless wrapped PTFE.

 

[koosh]

Must be some gas resistant silicone that you can seal it up with?

Ive heard “seal-all” is good, not sure if I would seal the hole using a rubber grommet, and I don’t even know if the rubber grommet will stand up to being in gas…

 

[matthon]

Tanksinc sending unit eliminating kit.
Has the best gasket for gas.

I know Summit has them.

Threaded C ring, bolts with o-rings, metal cap, gasket, not the cork gasket, the other one, neoprene iirc.

My wagon tank had a rust hole at the bottom. Hasn't leaked a drop in many years.

 

[koosh]

Tanksinc sending unit eliminating kit.
Has the best gasket for gas.

I know Summit has them.

Threaded C ring, bolts with o-rings, metal cap, gasket, not the cork gasket, the other one, neoprene iirc.

My wagon tank had a rust hole at the bottom. Hasn't leaked a drop in many years.

View attachment 1938365

Ummmm. IM not looking to eliminate my sender, just want to seal the wires where they pass thru it

 

[Dennis H]

External pumps way too loud. Get wallet and do it right. I attempted and failed to have an access panel installed in trunk floor to get at pump without dropping tank. Went with a fancy PWM and it failed. Been using a parts store Delco pump for years with no issues.

 

[matthon]

IM not looking to eliminate my sender, just want to seal the wires where they pass thru it

Thought you were looking for a good sending unit seal, my bad.

 

[koosh]

External pumps way too loud. Get wallet and do it right. I attempted and failed to have an access panel installed in trunk floor to get at pump without dropping tank. Went with a fancy PWM and it failed. Been using a parts store Delco pump for years with no issues.

I HAVE a pump and can be mounted in tank or externally. Dont like in tank… to me makes no sense. External louder? Don’t bother me. Something goes wrong— syphon the tank, remove the tank, yank out the sender and pump. At 70, it no more fun on my back on the floor. No lift here. External pump- piece of cake to replace