so i need to setup fuel lines to new motor - whats everyone used or recommend ?
New fuel line , where from and size
did anyone use old line for return ?
pump ?
surge tank ?
mounting of these - pics are helpful for the less imaginative peeps
EFI 5 ltr fuel setup
Started by
_Torana Affair_
, May 14 2012 07:13 PM
26 replies to this topic
#1
_Torana Affair_
_Torana Affair_
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Posted 14 May 2012 - 07:13 PM
hey all,
so i need to setup fuel lines to new motor - whats everyone used or recommend ?
New fuel line , where from and size
did anyone use old line for return ?
pump ?
surge tank ?
mounting of these - pics are helpful for the less imaginative peeps
so i need to setup fuel lines to new motor - whats everyone used or recommend ?
New fuel line , where from and size
did anyone use old line for return ?
pump ?
surge tank ?
mounting of these - pics are helpful for the less imaginative peeps
#2
_LH SLR 3300_
_LH SLR 3300_
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Posted 14 May 2012 - 07:46 PM
I used a second factory 5/16" fuel line for both my injected cars, used Redline surge tanks, Carter lift pumps a stock VN main for one of my Toranas & a Bosch 044 for my 355 Torana. Here is part of the fuel system for my 355 Torana.
I concealed the fuel system in my other Torana with a boot install but here is a pic.
No pics of the supply/return lines fitted to the car, but i modified them respectively to suit each car.
I concealed the fuel system in my other Torana with a boot install but here is a pic.
No pics of the supply/return lines fitted to the car, but i modified them respectively to suit each car.
#3
_Quagmire_
_Quagmire_
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Posted 14 May 2012 - 07:47 PM
a vl or vn v8 exteral pump will do fine for your pump
lines etc i have no idea...as it will vary according to what you want/how much power etc etc etc
lines etc i have no idea...as it will vary according to what you want/how much power etc etc etc
#4
_greenmachine215_
_greenmachine215_
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Posted 14 May 2012 - 07:54 PM
My hatch setup goes:
From tank
Inline efi filter
Carter black lift pump ( make sure inline fused)
To surge tank mounted above diff
Bosch 044 pump ( make sure pump has inline fuse)
to engine
Return line off fuel rail
To adjustable fuel reg,
Then back to surge tank
Surge tank flows back to fuel tank.
The surge tank should be fed into the top and out the bottom
When returning from engine to surge tank the fitting should be on top
Also from surge tank returning to main tank fitting shoul be ontop
This ensures the surge is constantly full only allowing excess fuel to return to tank
My surge tank is 1litre capacity, ran this fuel setup on a 480hp stroker with no problems
So the surge should be three fittings ontop(1: fuel IN 2: Fuel return IN from engine 3: return from surge to fuel tank )
on the bottom there will be one fitting : fuel OUT to efi pump
The pump wiring is run from the ignition side, I wired inline fuse then went to carter lift pump the jumped the wires to the 044 efi pump with another inline fuse so if one lift pump shorts or blows it cuts both out preventing damage to the efi pump inturn the other way round.
This is the way I found best to setup efi systems, but like everything someone else may have another way of doing it or another opinion, like I said I ran my stroker eight this no problems, and will remain to run this.
Hope this he'd some light for you, if u have any other questions u can pm me I'm happy to help.
Let us know how it goes.
Cheers
From tank
Inline efi filter
Carter black lift pump ( make sure inline fused)
To surge tank mounted above diff
Bosch 044 pump ( make sure pump has inline fuse)
to engine
Return line off fuel rail
To adjustable fuel reg,
Then back to surge tank
Surge tank flows back to fuel tank.
The surge tank should be fed into the top and out the bottom
When returning from engine to surge tank the fitting should be on top
Also from surge tank returning to main tank fitting shoul be ontop
This ensures the surge is constantly full only allowing excess fuel to return to tank
My surge tank is 1litre capacity, ran this fuel setup on a 480hp stroker with no problems
So the surge should be three fittings ontop(1: fuel IN 2: Fuel return IN from engine 3: return from surge to fuel tank )
on the bottom there will be one fitting : fuel OUT to efi pump
The pump wiring is run from the ignition side, I wired inline fuse then went to carter lift pump the jumped the wires to the 044 efi pump with another inline fuse so if one lift pump shorts or blows it cuts both out preventing damage to the efi pump inturn the other way round.
This is the way I found best to setup efi systems, but like everything someone else may have another way of doing it or another opinion, like I said I ran my stroker eight this no problems, and will remain to run this.
Hope this he'd some light for you, if u have any other questions u can pm me I'm happy to help.
Let us know how it goes.
Cheers
#5
_greenmachine215_
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Posted 14 May 2012 - 07:58 PM
Bloody hell lh slur u were quick I thought I'd get the first repy in. I must be slow or your just quick off the bat, ur setups basically the same as mine
Standard fuel lines should be ample enough. Considering the pressure is around 40-50psi it's always got pressure in e lines
Standard fuel lines should be ample enough. Considering the pressure is around 40-50psi it's always got pressure in e lines
#6
_LH SLR 3300_
_LH SLR 3300_
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Posted 14 May 2012 - 08:02 PM
^^^Yeah but you explain it better. Identical set ups for sure & as my 355 puts out slightly less power than your's means the factory 5/16" fuel lines are fine to use. By the way, what regulator are you using? I use a Sard on my 355 but standard VN one on the other car.
#7
_L32M20_
_L32M20_
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Posted 14 May 2012 - 08:04 PM
just run a piece of steel bundy line alongside the old fuel line (the same size will be fine for low hp streetcar) use half inch for a big drinker. at the front of car ,rubber fuel injection hose will run from both steel lines to your fuel rail on top if motor.fuel in ,goes past the pressure regulator . the other side of fuel rail is fuel return,back to tank.(old line)at the back end of the old metal line,just run a short piece of rubber hose over the diff back to middle fitting of tank. make sure you USE PROPER FUEL INJECTION CLAMPS or youll be drivin a potential fireball.and only use metal fuel filters,plastic ones can go pop!. at the back of car you have three lines goin to the breather in the diff well. dis connect the middle one at the tank.(you can ditch the little metal line to the breather).thats where your rubber return line can go.get a small brass t piece and join the middle disconnected hose (UP AT THE BREATHER) to one of the other two.so you still have a breather line at either end of your tank.or just block one of the three off at the breather. from that breather in the diff well,another steel line runs up to the front of the car to your carbon canester. thats where your fuel vapour will come out.thats another topic.dont rip it out till you think carefully bout what your gonna do there. i believe mounting fuel pumps/surge tanks in the boot is not only dangerous without a proper firewall installed but is not legal as far as i know.so i mounted my vl 6 cyl fuel pump and au falcon fuel filter as low as i could level with bottom of tank,so fuel will semi gravity feed pump ,so not workin it too hard,and it only needs to push fuel up to motor.there shoul be just enough room between back of diff axel tube and boot floor(if you run pipes under diff)to rubber mount pump and filter together on a slightly modified vl bracket .im not circuit racing my car and its making under 300 at the wheels runs a microtech and has been tuned very well at dyno shop.and im not running a surge tank and has not leaned out on me at all. keep fuel in the tank and all should be well.its a vt 5 litre with only pacemakers and a k&n.hope this answers some of your questions and helps you out some.pm me your email and id be happy to send you some pics .got me rooted how to post em on here. .ps mount your filter before your pump to stop any shit gettin to your pump. if anyone else can see any fault with my set up id love to hear your opinions regards .b.
took me so fkn long to type you all beat me to it. i should have waited,damn.
took me so fkn long to type you all beat me to it. i should have waited,damn.
Edited by L32M20, 14 May 2012 - 08:12 PM.
#8
_greenmachine215_
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Posted 14 May 2012 - 08:36 PM
LH SLR 3300 I too am using a sard reg just with a liquid filled gauge on it in the trans tunnel, pretty much set and forget. Nice compact reg aswell.
Should be a good thread to read up on STICKY perhaps
Should be a good thread to read up on STICKY perhaps
#9
_LH SLR 3300_
_LH SLR 3300_
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Posted 14 May 2012 - 08:37 PM
^^^Pretty much on the mark, however i set the engine fuel hose up as follows ; supply from pump to passenger side of rail, then from regulator (driver's side)to return line. Recently i helped wire up an injected 5.0ltr in another forum member's LH where he'd fitted the supply line to the reg & the car wouldn't fire. Regulator is a one way valve & keeps pressure in the fuel rail itself, so once we swapped the lines to the way i set my car up, the engine fired up. Good point on fuel systems in the boot & running the pumps as low as possible, i checked with an RTA approved engineer regarding my set ups & his only requirements were that i sealed the cabin off (fuel vapours) & that none of the hardware (surge tanks etc) were fitted too close to the exterior sheetmetal (quarter panel cavities etc) as the system can be ruptured easily in the event of an accident. I thought of running my pumps externaly as you suggested, however the 9" diff in my car didn't leave alot of room & maintanence would've been a nightmare.
#10
_LH SLR 3300_
_LH SLR 3300_
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Posted 14 May 2012 - 08:41 PM
I run a liquid (Autometer Pro-Comp) gauge too, mounted to the wiper panel though & running through a braided line. After trying a couple of regs like the Malpassi etc, the Sard is the best, nice & compact as you said & easy to set, then forget.LH SLR 3300 I too am using a sard reg just with a liquid filled gauge on it in the trans tunnel, pretty much set and forget. Nice compact reg aswell.
Should be a good thread to read up on STICKY perhaps
#11
derrin71
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Posted 14 May 2012 - 08:42 PM
Anything related to fuel systems in the boot or hatch compartment is a big no-no in Queensland.
My mod plate guy gave it the big thumbs down.
My mod plate guy gave it the big thumbs down.
#12
Statler
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- Name:Col
- Location:Mackay Qld. Whitsundays for all you back packers!
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Posted 14 May 2012 - 08:46 PM
Anything related to fuel systems in the boot or hatch compartment is a big no-no in Queensland.
My mod plate guy gave it the big thumbs down.
That's the opposite of what my inspector tells me.
I guess (as usual) it comes down to interpretation.
#13
_L32M20_
_L32M20_
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Posted 14 May 2012 - 08:56 PM
im running a 9 inch too and it only just fits . if you dont have a hoist maitenence could be a pain .no more than a crummydore though.if id had to try n squeeze any thing else under there ,prolly would have given up.but im glad its out side. hey awsome cars you have by the way.im lovin orchid metalic.
#14
turbo76lx
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Posted 14 May 2012 - 09:07 PM
This is my surge tank and i just run an extra 5/16" line for the return.
The return from the surge tank tee's back into the breather on the fuel filler.
The return from the surge tank tee's back into the breather on the fuel filler.
#15
_L32M20_
_L32M20_
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Posted 14 May 2012 - 09:22 PM
holy crap thats one of the best ones ive ever seen. but my bloody exhaust runs right there.mate thats very clever indeed.
#16
_LH SLR 3300_
_LH SLR 3300_
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Posted 14 May 2012 - 09:23 PM
That's how i've run my return line to tank. Like the pump/filter set up, wouldn't work on my cars though thanks to dual exhaust system. I would've prefered to fit the pumps outside the car too, just easier to fit them in the boot as i don't have access to hoist & all my maintanence is carried out with the aid of trolley jack & chassis stands. I used barb fittings & rubber EFI hose on my orchid car, but dash fittings & braided line on the 355 Torana. Probably overkill but i was single & living at home when i built that car so i had alot more disposable income to spend on stuff like that.
#17
_coupe202_
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Posted 14 May 2012 - 09:26 PM
Run a pick up point at the lowest point of the fuel tank then fit your EFI fuel pump and this emilinates a pick up pump and surge tank. Then run a return fuel line back to the tank from the font of the car.
#18
_L32M20_
_L32M20_
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Posted 14 May 2012 - 09:39 PM
yeah but this set up could be limiting .do you run this setup on your car? how do you find it ? i just wanted simple and just hoped it would work .it has so far.but i wouldnt be using it for a track day.
#19
_shan620_
_shan620_
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Posted 14 May 2012 - 10:47 PM
im using a fuel cell and was told with a fuel cell u dont need a surge tank, so no surge tanks for me. Just dash 8 fuel lines, bosch 044 fuel pump, magnaflow fuel regulator.
#20
_coupe202_
_coupe202_
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Posted 15 May 2012 - 06:22 PM
At the moment I have a Fuel cell which takes too much space so Ive going to fit a alloy fuel tank in the factory hole and Im going to mount the fuel pumps at the lowest point.
#21
_shan620_
_shan620_
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Posted 15 May 2012 - 06:51 PM
cut the boot out and sink the fuel cell. Ive cut my boot floor out because of the same reason, it'll now sit 5 inches lower and .
#22
_Torana Affair_
_Torana Affair_
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Posted 15 May 2012 - 07:11 PM
thanks all for the info, before i go buy a surge tank , whats the go with fitting fuel pump from combo that i got motor from , a few ppl recon they have done that and no need for surge tank or other pumps ,,,,,,,,,,,
truth behind ?
truth behind ?
#23
_heapa_
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Posted 19 July 2012 - 04:07 PM
i hate having my fuel system in the boot. the smell is bad and i wont put my kids in the car. im about under take a rebuild on my fuel system to try and get rid of the smell. i dont have heaps of cash to buy all them flash fittings and braided lines. i have just had a box made up and am going to try and seal it off or move out of the boot. i will put up some pics once its done
#24
_tyre fryer_
_tyre fryer_
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Posted 20 July 2012 - 08:23 AM
I run a similar setup to those above, except my setup is in the boot and the engineer insisted that it be solid mounted, isolated/sealed from the cabin and vented into the atmosphere, away from the exhaust.
Used a Bosch44 for the feed to the motor, carter carby pump for 'lift' pump, a standard surge tank and ran a 'buddy' return line alongside the existing line. This bit wasnt too tricky as we just grabbed a whole bunch of EFI line clamps mae for two lines and put them in place of the originals (and added a few extras for security). All other lines that could be flexible we just used proper EFI hose and the container (actually a REPCO toolbox) was fitted with all speedflow fittings, does the trick perfectly.
Used a Bosch44 for the feed to the motor, carter carby pump for 'lift' pump, a standard surge tank and ran a 'buddy' return line alongside the existing line. This bit wasnt too tricky as we just grabbed a whole bunch of EFI line clamps mae for two lines and put them in place of the originals (and added a few extras for security). All other lines that could be flexible we just used proper EFI hose and the container (actually a REPCO toolbox) was fitted with all speedflow fittings, does the trick perfectly.
#25
_Meggsy83_
_Meggsy83_
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Posted 30 April 2014 - 02:47 PM
Hi all, building a LH with a 5.0efi (VQ) motor.
Is the surge tank really needed?
Can I just run.
From tank
Inline efi filter
Carter black lift pump
Stock VQ fuel external Pump to engine
Return line off fuel rail
To adjustable fuel reg,
Back to fuel tank.
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