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3/8 aluminium fuel line

Discussion in 'Straight 6 Development And Modification' started by MAHOOVKV8, Aug 16, 2010.

  1. MAHOOVKV8

    MAHOOVKV8 New Member

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    I am in the process of puttin a hot 202 with triple 45 webers and full manual tri matic in a lc torana and i was ringing around for 3/8 bundy line and efi hardware in nunawading sell aluminium line, i have never heard of anything other than steel or brass line, Is this line ok for legalities and is it safe to use because its not as strong as steel line? Also this shop uses it for all there efi setups and SAY THEY have had no problems.
     
    Last edited: Aug 18, 2010
  2. Pub247

    Pub247 Well-Known Member

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    Personally i dont think a hot 202 especially running a carbie setup is going to use more fuel than the factory line can supply. a low pressure electric fuel pump could help.

    So in essence upgrading your fuel line is a waste of money.

    I dont see an issue using alloy line if it has decent wall thickness
     
  3. MAHOOVKV8

    MAHOOVKV8 New Member

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    The carbies on full throttle with my set up will use roughly 70 gallons an hour, the pump i have pumps 100 gallons a hour and thats alot to pump thru 5/16 fuel line.
    The aluminium line wall does not look very thick, i'm worried the line will crack when i bend it.
     
  4. GenReaper

    GenReaper Donating Member

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    Ding Ding, wrong :D

    3/8 wont be enough if you intend to rev it hard.
    EFI is under 300 PSI pressure, different kettle of fish compared to 5 pounds pressure.
    You need large diameter fuel hose and it also acts as a resivour.

    With my old setup running 45DCOE webers i use to run 1/2 inch inside diameter 5/8 outer roughly fibreglass re-enforced Fuel hose.
    Same as this stuff.

    [​IMG]

    Screw it into chasis rails with these under car

    [​IMG]

    These are easier to use as they chasis rails are not real tall.
    Mount it to the side of the rail not the bottom where it can get crushed, lol

    [​IMG]
    You will need a hole punch to go thru the boot as its best to mount a Holley Blue fuel pump in the boot.
    Use special plastic grommets thru the floor of the boot, they need to be strong as to stop and sharp edges rubbing thru the hose.

    You would also need to drill a hole in your fuel tank and silver solder a brass tube into it that ends up down the back end of the bottom of the tank for a fuel pickup as the stock pickup will not flow enough either.

    Webers do have there own internal fuel guaze filters but i reccomend a morros fuel filter inline between the tank and the fuel pump.

    Sorry dont have any picture of my boot setup but here is one of the Webers in the bay, good old days.
    This thing could run 12.7 all day down the quarter mile even with a big heavy 9 inch diff in the rear.

    [​IMG]
     
    Last edited: Aug 18, 2010
  5. Pub247

    Pub247 Well-Known Member

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    Ding Ding, wrong :D
    I might have been wrong but so are you, 300psi ???? come on, thats 20bar of pressure most modern EFI petrol cars run 3 bar whcih is 45psi . I never said i was right i just expressed my opinion
     
  6. GenReaper

    GenReaper Donating Member

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    He He all good, you get the jist of it :D
     
  7. MAHOOVKV8

    MAHOOVKV8 New Member

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    GenReaper i like your old lc torana, Tate automotive are doin the carb tuning for me and he said to use 3/8 fuel line (bundy line) and a 100gph carter fuel pump upto a holley red regulator then the fuel block then 5/16 line to each carby. This is right setup for his car that did 12.7 down the quarter with a trimatic.

    I ended up returning the aluminium line got some steel line ALL GOOD.
     
  8. HIROLLA

    HIROLLA Member

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    i make 320rwkw's and still use the factory 5/16 hose so unless your going spastic your fuel lines will be fine
     
  9. ari666

    ari666 250,000 hits

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    um, has anyone mentioned that electrolosis will quite possibly chew through alloy pipes? i had a small alloy fitting on my heater hose that i didnt earth (didnt think it needed it) then one day it just strated spraying coolant everywhere.

    if you choose alloy pipes, then make sure you earth it, and earth it good. the last thing you want it spraying petrol in a fine mist near your exhaust.
     

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