In Tank Bosch 044 Fitting

[Mehdi]

Ok cool.. thanks for helping me figure this out. So you are certain that the section wire from the blue connector to the fuel pump is not the weak spot.
 
Ok my setup is battery in the boot, so its only couple of feet to the pump, using 30amp relay. I have used quite thick wire i would say about 2.5mm diameter. You are right 14gauge should be sufficient.. Info on wires:
http://www.rbeelectronics.com/wtable.htm
 
I was looking through Maplin to find a suitable wire, i found this:
http://www.maplin.co.uk/Module.aspx?ModuleNo=6200&OrderCode=XR59P
What do you think? Or do you know a better one?

[SmbFD3S]

Well if it was the weak spot then mine wouldn\'t have worked either but then i have 10 gauge multistrand (6mm) feeding everything except that connector to the pump....
 
Have you cut the earth cable and put a larger cable to this aswell? as per the first picture ?
 
At least it\'s easy for you to change cables if you need to as the battery is in the boot
 
What are the symptoms you are experiencing ?
 
With the cable, most cable insulation made of synthetic compounds will be resistant to fuel, it\'s the mineral/oil based ones that wont be, therefore you should be fine with regular PVC or XLPE sheathed cable

[up&coming]

sweat write up

[imebgo]

Good description here, quick question.

On the wiring for the second diagram, bypassing the stock relays, if this was extended to 3 fuel pumps (in tank + 2 in line) could I:

Run 3 relays from the 1 switch (what sort of current does the switch side of the relay draw?)

Have 3 switches going to 3 relays?

Any other sensible options?

Thanks,

James

[SiH]

1 feed to 3 relays is fine - auto relays only draw very small amounts of current

[imebgo]

Does running multiple pumps have any extra safety benefit.

E.g, im going to run in tank to a swirl pot with two 044 coming out of that, if the in tank one failed, I wouldnt lean out straight away because of the swirl pot?

Could there be some room for failure if a 044 failed for whatever reason?

If there is benefit here would a single switch running 3 relays be a single point of failure?  So, running a single switch to 3 relays would work but would it better to go via 3 seperate circuits?  I dont mind the extra effort involved if there is any benefit.

Just curious on this one!

Thanks,
James

[mick choi]

hi guys can anybody help?     my current set up is  2x 850cc primary/  2x1680cc  secondary,  with std pump feeding a swirl pot underneath the car then a bosch 044 feeding the injectors!  ive been told my new set up will need  2x 1680 primary / &  2x1680  secondarys  with two bosch 044`s in a bracket fitted in tank,      where can i get this  bracket??     please  help............cheers mick 07894 707535

[philiwily]

I assume your not using a PFC

Phil

[PGiljevic]

Nice job and write up.

I\'ll add for people who care to listen, DO NOT USE A 044 IN TANK PUMP! They are noisy, have VERY BAD fuel pick up (even when mounted as low as possible), and they flow less than a SARD 280lt pump.

I had one in for a day before ripping it out

The by far better combination is exactly the same as above except running a SARD 280lt (DENSO pump), these can be run to a far lower fuel lever as the rotor assembly is right at the BASE of the fuel pump body armature. On the 044 it\'s much higher up (past the nut on the end then a empty space in the body!).

If you want a killer set up, look at my build thread on my car, I run a single SARD 280LT along with a Keene Bell BOOSTA PUMP (voltage, current modifier) this has been run to well over 750bhp worth of fuel flow!) also you will need to do a full proper rewire of the voltage supply as show here.

Hope this helps people out.

Oh and the fule pump I have now is quite as stock!, my fuel temperature even on a base setting of 53psi pressure and running 25psi boost (80+psi fuel pressure at full load) after a 1 hr drive with only 20lt of fuel in the tank never goes above 15deg C over ambient. An 044 set up will BOIL the fuel in your tank by comparison!

I forgot to add to finish of this conversion you should FOAM FILL your fuel tank! I use Yellow ATL fuel foam and this will let you run it at the track or on road with the fuel light on, without any pick problems at all.

:3gears-rh

:Typing

[Speedworks]

Bringing this back from the dead.


As i got thesame 044 fuel pump kit from Atomic, I just wanted to know some details.

The first picture shows the Fuel pump with one way valve on top, right?
From a closer look, I would say that, on top of the valve, there is a (end) cap closing of the top.

Do I get this right?

Mine looks like this, with a nut on top instead of an end cap.
As my fuel system sound hold any pressure after the pump has primed (or virtually when it stops running) I\'m guessing this should be the issue.








Any help would be greatly appreciated

Neal

[SmbFD3S]

The top of yours looks closed off though?  Are you saying this is open?  If it\'s open you wouldn\'t get pressure at all as the fuel will just be flowing out through the pump and out the top?? Yes it should have a cap nut on the end of that.....

[Speedworks]

Thought so, now it\'s an open head. need to get that changed..

i was seeing some pressure in the system, but as soon as I turn the ignition off it fell away.

Thanks for the quick reply!!

[mexx]

Why change the originel pump ?
The original pump is good for 600 + and it picks up good from the bottom of the tank why change a winning team ?
It gives more than enough pressure and you dont have to make any changes to the fuel system at all.
Also the original pump is very relieable so why do the extra efford and spent the extra money for something that is good.

Cheers Marcel

[JayDee]

So you have 600+ or have seen this nice round number achieved? Here are the flow rates for a standard pump that I found on the net.
 FD Pump @ 12V

PSI GPH LPH
 40 52 197
45 50 188
50 47 178
55 45 171
60 43 161
65 40 151
70 35 132
75 30 115

With simple mathematics you can work out if it will come close to being able to flow enough fuel.
Why would you keep a 20 year old pump in your car if modify it? So if buying a new pump why not get a higher flow one rather than pay for a new stock one?
Also a lot of cars that I see that quote such high figures are no where near the quoted power, unless there talking about my little pony horse power....

Why change the originel pump ?
The original pump is good for 600 + and it picks up good from the bottom of the tank why change a winning team ?
It gives more than enough pressure and you dont have to make any changes to the fuel system at all.
Also the original pump is very relieable so why do the extra efford and spent the extra money for something that is good.

Cheers Marcel

[KrisD1]

Isn\'t it better to use it as an inline pump with to stock or uprated intank pump?
Btw, where can you get an fuelcooler? As it warms the fuel up quit a bit.