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Electric fuel pump location

Started by _Mint_ , Jun 22 2014 06:11 PM

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20 replies to this topic

#1 _Mint_

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Posted 22 June 2014 - 06:11 PM

the other day i had the torry on the rollers to see what difference the new manifold makes..made no difference

but this time i watched the fuel pressure at cruise i had 7 psi which dropped to 3 psi at wot

so ive been thinking about an electric pump and where to put it coz there anit much room

directly above diff centre at floor angle bout 50-60 mm clearance

horizontal in the center about the same

passenger side bracket part of tank breather lines quite good clearance but a pain to route fuel lines

or drivers side where fuel line is but above top control arm about 50-60 mm clearance

Edited by Mint Julip, 22 June 2014 - 06:11 PM.

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#2 _76lxJAS_

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Posted 22 June 2014 - 08:28 PM

Im unsure what pump you are using?
I believe carter pumps have the be vertical. Not horizontal. Same as holley pumps. If there horizontal they get air problems.
I mounted my carter through the floor just under the rear seat driver's side. Its a little noisey but was most practical for me.
If you can find (MY TOY) In members cars. I think I put a pic on there when I done it. If you want better pics lets me know.
Cheers
Jason

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#3 _Mint_

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Posted 22 June 2014 - 09:13 PM

thats what i was thinking too Jason..i have seen another guy cut a hole in the tunnel an stick the top of a holley blue pump in the hole

though im loathed to cut another hole in the 'ol girl :<_<: i have also seen both Carters an Holleys mounted sideways even upside down

oh and im running a holden mech pump with a hi pressure kit in it

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#4 _Bomber Watson_

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Posted 22 June 2014 - 09:21 PM

Just make sure its lower than the fuel level at all times.

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#5 WhaleOilBeefHooked

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Posted 22 June 2014 - 10:44 PM

So when you say "Lower than fuel level" would indicate to me that it needs to be Lower Than Fuel Tank ??? which isn't so easy to do if not taking fuel from bottom of tank... Or am I just talking s..t due to Ole No.7. on ice again ??? As Pauline Said "Please Explain" How would one go about drawing fuel out the top of Bathurst tank via carter electric pump.....

Edited by WhaleOilBeefHooked, 22 June 2014 - 10:46 PM.

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#6 _Bomber Watson_

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Posted 22 June 2014 - 11:08 PM

Correct.

For the situation you described personally i would use an in tank pump.

THe fuel tank in my car is modded with a bottom feed though, so not really an issue for me personally.

I did it the way i did party because i wanted a somewhat baffled fuel pickup and because i wanted to future proof it for future mods.

If i decide to run an electric pump, i can just change some lines around and mount a pump.

I also had to plum a return in.

If i go efi it would be as simple as plumbing a lift pump in beside the tank, then making a surge tank to fit in the engine bay with the high pressure pump off it, etc etc....

Always thinking ahead hehe

Hose down the bottom of the tank is feed, one that runs to the top near the floorpan is return.

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#7 _Mint_

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Posted 22 June 2014 - 11:14 PM

Just make sure its lower than the fuel level at all times.

that aint gunna happen ..the best i can do is have it as close as possible

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#8 _76lxJAS_

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Posted 22 June 2014 - 11:42 PM

thats what i was thinking too Jason..i have seen another guy cut a hole in the tunnel an stick the top of a holley blue pump in the hole

though im loathed to cut another hole in the 'ol girl i have also seen both Carters an Holleys mounted sideways even upside down

oh and im running a holden mech pump with a hi pressure kit in it

hey Tim.

I wouldnt cut a hole. you would have to seal it for exhaust fumes etc.

i just drilled 3 little holes in the flat area under the rear passenger seat, and mounted it with the rubbers etc that came with it.

The pump sits higher than the trailing arms and it was a easy spot for the lines to run.

also i would think where you are going to put a pre filter before the pump. also add another finer filter closer to the engine.

for added protection. get a couple neo (rear earth) magnets and attach them to the filter. they will stop any metal that may come through the line..

then for wiring i highly recommend these. http://www.ebay.com....82dacca8&_uhb=1

sorry if you know all this, just thought id add it in.

cheers Jason

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#9 76lxhatch

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Posted 23 June 2014 - 07:06 AM

Yep the Carter pumps are pretty good, you can get away with having them a little higher than ideal, mine's been here for years

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#10 _Mint_

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Posted 23 June 2014 - 07:10 PM

thanks chaps..i would like to see a pic Jason thanks? if (when) i fit the pump i will use a relay like what they fit to gas systems as a safety cut off

an hatchy i would like to put the pump where you have yours cept i have an exhaust there(full twin system) also a sway bar tho i dont have a centre bump stop

or the other two you have ..what are they from?

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#11 _Bomber Watson_

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Posted 23 June 2014 - 07:13 PM

Center bump stop looks Hiluxy?

Carter pumps must be pretty special to be able to suck fuel that high, theres no end of threads on this forum and other forums of people complaining about either poor performance or lots of noise etc from there pumps only to turn out there mounted way to high.

What exact model carer pump are you guys running? I'd like to add it to my brayne bank.

Cheers.

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#12 _Mint_

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Posted 23 June 2014 - 07:37 PM

this is the one im thinking about 100 gph and doesnt require a regulator...easy

http://www.ebay.com....=item2a3307101e

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#13 _76lxJAS_

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Posted 23 June 2014 - 09:52 PM

thanks chaps..i would like to see a pic Jason thanks? if (when) i fit the pump i will use a relay like what they fit to gas systems as a safety cut off

an hatchy i would like to put the pump where you have yours cept i have an exhaust there(full twin system) also a sway bar tho i dont have a centre bump stop

or the other two you have ..what are they from?

no hassles at all i will do a few pics tomorrow for you.

im useing this carter with a regulator. i was told always better to have to much than not enough.

I had the same problem with twin exhaust. couldnt fit it where the above pic is.

the other 2 are the exhaust hanger brackets.

1http://www.ebay.com....dd1dfc0f&_uhb=1

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#14 WhaleOilBeefHooked

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Posted 23 June 2014 - 10:13 PM

Thanks Bomber for clearing that up with pictures to boot...

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#15 76lxhatch

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Posted 24 June 2014 - 06:34 AM

an hatchy i would like to put the pump where you have yours cept i have an exhaust there(full twin system) also a sway bar tho i dont have a centre bump stop
or the other two you have ..what are they from?

Ah forgot all about the exhaust, used to run under the diff and now goes out the side. The centre bump stop is standard but I cut it down a little, sway bar is a Commodore style one which offers enough clearance. Not sure what you mean by other two? Unless you're talking about the exhaust hanger brackets a bit further forward, which are factory?

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#16 _76lxJAS_

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Posted 24 June 2014 - 12:41 PM

Ive put in a couple of my filter and location also.

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#17 WhaleOilBeefHooked

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Posted 24 June 2014 - 06:25 PM

Where's the tank pick-up for that install Jason ???

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#18 _76lxJAS_

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Posted 24 June 2014 - 06:53 PM

off the factory tank pick up.

it works fine no issues at all at this stage.

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#19 _Mint_

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Posted 24 June 2014 - 06:55 PM

^^^thanks Jason i know the spot you mean and ive had a look at that ..long ways from the tank tho

an hatchy i got more questions...i dont have the centre bump stop or the two exhaust hangers ...never did???

Edited by Mint Julip, 24 June 2014 - 07:10 PM.

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#20 76lxhatch

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Posted 25 June 2014 - 08:13 AM

Not sure what you're asking? Page 196 of the LX parts manual shows the exhaust mounting, only cars with twin exhaust got the exhaust hangers on both sides - they just bolt onto the holes on the side of the upper arm mounts. Four cylinder cars only got a basic hook setup rather than the proper version as above.

The diff bump stop is on page 362, seems to suggest that it was 5L V8 only? I do recall reading somewhere in these forums that not all cars got this. Mine is an early LX 253 SS but it may have been added. All these parts are bolt on so could have been added/removed/modified easily over the years.

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#21 _Mint_

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Posted 25 June 2014 - 06:51 PM

Not sure what you're asking? Page 196 of the LX parts manual shows the exhaust mounting, only cars with twin exhaust got the exhaust hangers on both sides - they just bolt onto the holes on the side of the upper arm mounts. Four cylinder cars only got a basic hook setup rather than the proper version as above.

The diff bump stop is on page 362, seems to suggest that it was 5L V8 only? I do recall reading somewhere in these forums that not all cars got this. Mine is an early LX 253 SS but it may have been added. All these parts are bolt on so could have been added/removed/modified easily over the years.

ok thanks..i think possibly mine had the exhaust hangers(maybe) and were removed by the guy who put a full stainless 2" exhaust on 25 years ago

as for the centre pump stop i never had it or anywhere to bolt it ..its all just smooth floor there

mine is a legit LX SS 4.2ltr early.. maybe the earliest 2/76?