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Is aliminiun fuel line legal for rego ? also for return line for EFI |
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I would be wary, aluminium can fatigue quickly and also it depends what fuel you are running, it can be corrosive. Also when you bend it at a sharp angle you can cause cracks. Alright if you plan to keep an eye on I guess but why? Steel is cheaper, copper is about the same cost or a bit dearer, and takes bending a lot better, but can also fatigue. The return line is not under much pressure.
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I think you'll find Queensland Transport regulations allow you to fit unmodified replacement fuel lines. Which means replacing steel bundy tube with aluminium would not be allowed without getting it engineered. As John said above, aluminium is not the best thing to use as it work hardens with vibration and develops fatigue cracks if not really well supported, is more susceptible to abrasion and damage under the car, and it will gall on steel flare fittings creating an imperfect seal.
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Thanks for the input .The reason asked was i wanted something straight as in extruded aluminium in a size that would marry up to the dash8 aluminium fittings for the braided lines into the fuel rails , the lines would be mounted with P clips inside the C of the chassis on my 67 C10 with LS1. Coiled steel bundy tube is hard to get nice and straight ,but might go with steel but would like 3/8" |
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David, This link may help, most state authorities reference it: http://www.infrastructur.../bulletin/vsb_ncop.aspx
here is the relevant clause from the section LM, Fuel Systems. "4 BASIC MODIFICATIONS NOT REQUIRING CERTIFICATION The following modifications may be carried out provided they do not affect compliance with the ADRs, compliance with regulations including applicable vehicle standards and provided they meet the following general safety requirements. 4.1 FUEL LINES The fitting of alternative or replacement fuel lines may be performed without certification, provided that: �h the installation is in accordance with good engineering practice; �h all components used are unmodified; �h the fuel lines are secured, properly supported and shielded against heat, abrasion and impact damage; and �h the fuel lines do not leak." I think your aluminium extrusion would not meet the requirement to be unmodified.
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If youre feeling rich, stainless annealed tube in straight lengths is readily available. Its really hard to get a nice flare though (for typical tube nuts/sleeves such as speedflow) so i would strongly consider having a stainless AN fitting welded to the ends or use a compression type fitting to adapt to your braided.
3/8" would probably be a bunch easier to work with than the 5/8" stuff I was messing around with.
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