Grizzly

Bit of a Thread revival but.....

I'm just sorting out a fuel system for my car at the moment, i am planning on running -8 lines to the front (I am in the process of buying a CJM fuel kit and seems rude not to use the -8 feed) the problem i have is i use an in tank 044 and do some Track days so want to make 100% if for any reason i dip below 1/4 of a Tank i won't starve the Pump.

SO... I want to loose the 044 from in tank, i have been told the best way to get a decent feed would be to fit a Supra Pump and use the 044 inline as suggested in the thread but isn't the Supra pump a 1/4 feed (-6) so would that cause a restriction compared to a system with a swirl pot and -8 feed? or would it indeed help the 044? (pressure feed) but as the 044 is a bigger bore pulling through more volume would that kill the effect?

I guess I'm saying is the Inline 044 better suited to -6 road setups? and if i want to Run a -8 feed would a Swirl pot better suit my needs?

fendamonky

iTrader: (6)

I'm doing a similar thing Grizzly, except I'm using the FFE fuel rails with '6 fittings on them.

I'll be running a swirl pot with stock lines feeding the pot, a -10 line between the swirl pot and the 044 and then transitioning to -8 between the 044 and the engine bay (using a -8 FuelLab 5" filter directly after the pump). Once inside the engine bay the -8 line is splitting off into two -6 lines to feed the injectors in parallel with a -6 return line from the FPR back to the swirl pot.

If you're going to completely revamp your fuel setup why not just make a swirl pot as well?

Neutron

iTrader: (10)

You could do a 044 with a surge tank which would elevate any fuel starvation issue and is actually pretty easy to set up. I am using dual 044's and had fuel starvation issues when the tank was below 1/2 a tank on E85. Moving them to a surge tank completely solved my problems.

Here how my set up turned out.

Surge tank install...

This is probably what you would use for a single 044.

Integrated Single 044 Surge Tank

Grizzly

What does ever one think of these? (i'd need to check it will work with -8) Fully Enclosed FP34 044 Fuel Surge Tank - 034Motorsport | Performance Parts for Audi, Porsche, and Volkswagen

MOBEONER

iTrader: (18)

sorry guys but two pumps different flow rates at same voltage in the same line is not something i would do, just my opinion.

Neutron

iTrader: (10)

You are describing an inline set up. A surge tank is not an inline set up and is not on the same fuel line. Completely different.

MOBEONER

iTrader: (18)

perhaps i misunderstood the OP post, but it doesn't say surge tank system. just says inline fuel pump..

rotorican85

iTrader: (9)

look up forum member "elwood" and check out his setup. he is finishing up an updated version for me, has ran numerous scenarios regarding flow, hp capabilities, etc. all i can say is that i am eager as hell to get rid of the aeromotive i have and run the setup he is building.

it involves two 044's, one in line and one enclosed in a swirl pot. just thought i'd throw that out there.

KNONFS

iTrader: (14)

Love all of the options posted, but I can help thinking that I might be overthinking (or overengineering) the solution. What about running a sump tank? I've been looking at the full-race one, which is smaller than the ones found in summit racing.

Full race:
Fuel Sump Kit - Full-Race.com

rotorican85

iTrader: (9)

a sumped tank like that is what i am currently using. that setup i find great for straight line acceleration since the momentum of take off pushes the fuel straight back. the drawback to it is that the recommended fuel pump location (for best results) is below the level of the sump, basically a gravity fed setup. i had my fb tank modified using a sump for a mustang 5.0. it has two large -10 fittings on it. this is great for when you want to drain the tank quickly to switch to a different fuel!!
for street use, on cars like ours that are normally lower than most, personally i wouldnt recommend it and it is not something i would do again. just my $.02.

Grizzly

That is the ideal fix but welding a fuel tank is a pita

KNONFS

iTrader: (14)

Yup and yup, thats why I've been strictly looking at the full race one. It is much smaller than the one used on domestic vehicles, and should in theory allow for a pump installation that doesnt hang as low or close to the ground.


Been doing lots of reading, and if I go that route, I will not be doing the welding on this one

I would let a pro handle that one!

PandazRx-7

iTrader: (18)

That's the surge tank I bought... will be a few months before I can report back. Will use a stock fuel pump inside stock tank feeding the external surge tank and the submerged Bosch 044 will feed the rails.

Pic ---> https://www.rx7club.com/build-thread.../#post11249009