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EFI Fuel line and fitting sizes?
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Topic: EFI Fuel line and fitting sizes? (Read 6229 times)
UltraOrange67-2443
Hero Member
Posts: 1034
EFI Fuel line and fitting sizes?
«
on:
January 19, 2014, 12:28:53 pm »
Trying to work out what size fuel line to run.
I may use aluminium hard lines down the center of the car.
What size filter etc.
I'm using a 044 Bosch pump.
Any formula I can use to check it will supply enough fuel for the motor?
Cheers, Nick
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1967 1200 2920cc EFI
modnrod
Hero Member
Posts: 795
Old School Volksies
Re: EFI Fuel line and fitting sizes?
«
Reply #1 on:
January 19, 2014, 22:59:32 pm »
One of these.......
http://www.vpw.com.au/Category/Index/5708
.......and the stock 5/16" line and filter, will push a 1550kg bland and plain-looking white To#¤ta with steel rims deep into the 12s.
Just for a reference.
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UltraOrange67-2443
Hero Member
Posts: 1034
Re: EFI Fuel line and fitting sizes?
«
Reply #2 on:
January 20, 2014, 00:17:14 am »
Thanks dude.
Sorted now
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1967 1200 2920cc EFI
spoolin70
Hero Member
Posts: 605
Re: EFI Fuel line and fitting sizes?
«
Reply #3 on:
January 21, 2014, 23:07:18 pm »
Out of interest, can I ask what size fuel line you decided on ?
2789cc right ?
Thanks
Darren
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BeetleBug
Hero Member
Posts: 2836
Snabba grabben...
Re: EFI Fuel line and fitting sizes?
«
Reply #4 on:
January 22, 2014, 08:46:19 am »
AN6 all the way will easily support 450hp in an EFi configuration.
-BB-
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10.41 - 100ci - 1641ccm - 400hp
spoolin70
Hero Member
Posts: 605
Re: EFI Fuel line and fitting sizes?
«
Reply #5 on:
January 22, 2014, 12:07:14 pm »
I was surprised to hear recently from a Fuelab technician that they ran 2x 1800hp pumps through one regulator with only a AN6 return !
Being concerned about fuel supply limitations/starvation, I had planned on using AN10 throughout so that information changed my thinking.
Thanks
Darren
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UltraOrange67-2443
Hero Member
Posts: 1034
Re: EFI Fuel line and fitting sizes?
«
Reply #6 on:
January 22, 2014, 22:08:34 pm »
Quote from: spoolin70 on January 21, 2014, 23:07:18 pm
Out of interest, can I ask what size fuel line you decided on ?
2789cc right ?
Thanks
Darren
Hi Darren.
Motor is a 90 x 101.6 (2919cc).
I'm Running -8 fittings/lines, Aeromotive pre and post pump filters, -8 to -6 Y piece, -6 Fuel rails, Aeromotive EFI -6 Regulator with -6 return.
I've been told 500cc Injectors will be best.
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1967 1200 2920cc EFI
Paul H
Newbie
Posts: 3
Re: EFI Fuel line and fitting sizes?
«
Reply #7 on:
January 23, 2014, 11:36:31 am »
Quote from: BeetleBug on January 22, 2014, 08:46:19 am
AN6 all the way will easily support 450hp in an EFi configuration.
-BB-
Correct but there seems to be cult following of "oversize" when it comes to fuel systems and inductions.
Been using two pumps through one regulator for about 10 years and having only one pump running via ecu control and the other on a switch
although there were some "Experts" who informed me that the fuel pressure would bleed back through the secondary pump
If you look at the return port inside a high flow Aeromotive or a Holley regulator you will see it is only about 3mm so you could quite easily get away with a -4 line on the return
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-Alex-
Hero Member
Posts: 683
Re: EFI Fuel line and fitting sizes?
«
Reply #8 on:
January 23, 2014, 12:01:54 pm »
I will be running this system:
Walbro 392 pump
AN8 line from tank to pump.
AN6 lines from pump to engine and back to tank
All my lines are goodridge 811 teflon hose, expensive, but very easy to bend and durable. But twice cheaper at hosewarehouse than demontweeks or merlinmotorsport.
http://hosewarehouse.com/Racing-Hose-Fittings/Hoses-Fittings-Oil-Hoses-Fittings/Hoses-Fittings-Oil-Hoses-Fittings-Goodridge-Series-811
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While Cal-Look stands still, looking backwards for inspiration, German Look keeps pushing boundaries further forward
pupjoint
Hero Member
Posts: 723
Re: EFI Fuel line and fitting sizes?
«
Reply #9 on:
January 26, 2014, 01:28:30 am »
Where do you all place the regulator?
Currently my regulator is just below the tank next to my fuel pump, but I notice vw Mexico put the regulator near the engine , on the rear breast plate.
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spoolin70
Hero Member
Posts: 605
Re: EFI Fuel line and fitting sizes?
«
Reply #10 on:
January 26, 2014, 18:40:31 pm »
I've only ever had regulators in the engine bay, on a bracket near the deck lid mount.
It did make connecting the boost reference line easiest as all pressure pipe work is at that end.
I've never heard of a technical reason to keep a regulator near the injector rails or fuel tank.
Looked up the instructions for my current regulator (Fuelab) and it's not specified.
Thanks
Darren
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Fiatdude
Hero Member
Posts: 1823
Re: EFI Fuel line and fitting sizes?
«
Reply #11 on:
January 26, 2014, 20:46:28 pm »
I put my regulator right after the fuel rals -- my thinking, the less pressurized fuel lines you have the less possiblity of leaks -- -- makes it easier for the boost reference too -- --
As far as fuel lines, I used thick wall 5/8" Aluminum lines and compression fittings for the connectors (I've ran the lines underneath the car) I had planned to do all 3/4" lines, even bought all the tubing and then found out how expensive the 3/4" compression fitting were (about 3x the cost of the 5/8"), it was cheaper to throw away all the 3/4" tubing and start over -- so went with 5/8" -- Cheap Bastard Huh? LOL
«
Last Edit: January 26, 2014, 20:51:58 pm by Fiatdude
»
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Nikov
Jr. Member
Posts: 74
Re: EFI Fuel line and fitting sizes?
«
Reply #12 on:
January 27, 2014, 11:25:01 am »
Where and how are you planning to run your fuel lines from tank to injectors Nick?
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UltraOrange67-2443
Hero Member
Posts: 1034
Re: EFI Fuel line and fitting sizes?
«
Reply #13 on:
January 27, 2014, 18:15:43 pm »
Give me a bell !
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1967 1200 2920cc EFI
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