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Location:
Perth
Registered:
July 2004
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fuel lines
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Thu, 26 August 2004 08:57
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Im wondering about different setups for fuel delivery to the engine. atm i am thinking of just running vl pumps with 8mm metal lines with efi hoses held on by hose clamps. is this the general setup? it is by no means a 'performance' upgrade.
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Location:
wangaratta
Registered:
May 2004
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Re: fuel lines
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Thu, 26 August 2004 10:28
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i hope to christ your talking about propper fuel line clamps, rather than standard hose clamps...
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Location:
Perth
Registered:
July 2004
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Re: fuel lines
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Thu, 26 August 2004 15:45
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well this is why im asking. i have the vl high pressure pump and both fuel inlet and outlet lines seem to be held on by'clamps'. do fuel lines usually run the 8mm steel pipe with the lip on the end with the rubber hose pushed over and clamped on? does it hold the pressure? i would have thought that you would need some sort of threaded join between the two. reason for asking is going from carburetted engine to efi
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I supported Toymods
Location:
melbourne
Registered:
June 2002
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Re: fuel lines
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Thu, 26 August 2004 23:04
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"proper" fuel lines are designed in such a way that they done bind up the fuel hose, as long as the hoses you use have either barbed or flared ends, it should be fine. just make sure you do the clamps up properly (not too tight, not too loose)
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: fuel lines
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Thu, 26 August 2004 23:11
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why does everyone think they need to upgrade fuel lines??
Unless you have massive turbo power and fuel consumption needs above and beyond 200-250HP, most stock lines will do the trick (well proven in my case)
Yes, replace all rubber fuel hoses on the HIGH PRESSURE side of the pump with EFI fuel hose. Its expensive, but also necessary. Get your hands on some nice bevelled edge full face hose clamps (i got mine from Speedflow conenctions in Seven hills), as these dont bite into the rubber hose like normal ones do.
Fully test your system before driving ANYWHERE!!!
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I supported Toymods
Location:
melbourne
Registered:
June 2002
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Re: fuel lines
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Thu, 26 August 2004 23:20
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i hear ya bro, that is exactly what i am planning to do, and not only because it is the easiest thing to do.
you do just use the standard fuel return dont you, not the charcol can fumes line or anything stupid?
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: fuel lines
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Thu, 26 August 2004 23:32
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well it depends on your point of view.
Yes the standard return line is pretty narrow, but i am using it on my 4age AE71 and have done for nearly a year. If you have questions about it capability to handle return flow, then just use the charcoal canister line. BE SURE to swap the hoses over at the fuel tank tho!!
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Registered:
November 2002
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Re: fuel lines
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Thu, 26 August 2004 23:35
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In 95% of set-ups, using the standard sized fuel return line is fine. Don't use that charcoal cannister line. I have kept my coal can in place for engineering / licencing reasons, in my home State.
Mitch.
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Registered:
June 2003
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Re: fuel lines
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Thu, 26 August 2004 23:43
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I just upgraded my fuel pump the other day to a nice walbro number. It flows about 255L/hour which is a shiteload (compared to the stocker anyway), and the standard return lines don't have any problem at all with it.
The standard fuel flow regulator was a different story altogether however. Fuel pressure went up to 60psi till I changed that baby over 
-J-
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I supported Toymods
Location:
melbourne
Registered:
June 2002
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Re: fuel lines
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Thu, 26 August 2004 23:56
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i will be using the same pump, overkill for a 4age, but it was cheap!
looks like i will have to investigate the fuel pressure regulator now, can you PM me with some details of what you did?
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Location:
adelaide
Registered:
April 2003
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Re: fuel lines
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Thu, 26 August 2004 23:58
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you need to be careful when you use that charcoal canister vent tube as a return line, if you dont use a venting cap you may end up pressurising the fuel tank which is not a good thing
my car is 35 years old so i didnt hesitate to change the fuel lines to new ones, however from tank to carbs i reckon it has cost me $600+ with all the lines/fittings/filters so unless you really need to change them then its a bit of a waste of money
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Location:
Perth
Registered:
July 2004
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Re: fuel lines
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Fri, 27 August 2004 01:12
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ok then. I am putting the high pressure pump near the tank so the old lines will have to ripped out as they are to narrow. will be using a mix of efi rubber and then the 8mm metal pipe to go over the bellhousing. thanks for the info
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Registered:
June 2003
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Re: fuel lines
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Fri, 27 August 2004 01:38
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sorry - it's prolly been said already, but what car is this all about?
-J-
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Location:
Perth
Registered:
July 2004
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Re: fuel lines
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Fri, 27 August 2004 02:50
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i have put a 5mge into a hilux replacing the carby 3y. It has duel tanks with 120L capacity and two separate systems leading into a single switch where you can alternate between the two tanks.
Its a bit of a mess now that i have a good look at it.
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Location:
Brisbane
Registered:
May 2002
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Re: fuel lines
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Fri, 27 August 2004 03:55
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Don't waste your time replacing the fuel lines with bigger ones; a 5M-GE doesn't use anywhere near enough fuel to justify an upgrade. Obviously replace the rubber hoses with EFI-spec hose, but that's all you need to do.
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Location:
Perth
Registered:
July 2004
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Re: fuel lines
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Fri, 27 August 2004 05:13
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The thing is that i have to go from the drivers side fuel tank outlets to the passenger side fuel rail. do you think it would be best to send the line over the bellhousing or just have a plastic line in the engine bay. another problem is the exhaust. it now exits the car on the drivers side so somewhere the two will have to be near each other. any ideas?
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Location:
Brisbane
Registered:
May 2002
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Re: fuel lines
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Fri, 27 August 2004 05:34
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If you need to get fuel from one side of the engine bay to the other, just run some steel tube along the firewall and join it to the existing fuel lines with a short length of hose. Much easier than replacing all of the fuel lines!
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Registered:
June 2003
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Re: fuel lines
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Fri, 27 August 2004 07:28
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can you PM me with some details of what you did?
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There's not that much to it really.
I threw in the fuel pump, and my fuel pressure went through the roof. Changed my stock fuel pressure reg for an aftermarket one, and all was funky in funkytown.
-J-
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