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Author Topic: solid fuel lines  (Read 2146 times)
baz
Hero Member
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Posts: 753



« on: March 14, 2015, 18:16:38 pm »

I want to run 2 solid fuel lines through the tunnel on my efi 2276 bug. I'd like the lines to terminate each end into anodised fittings.
I need some help on what sizes I need to buy, I'm clueless with this type of work and I'd really appreciate it if somebody could let me know exactly what I need for the lines and fittings.

I'm thinking of using the cb performance tank outlet adapter so I can return the return line back to it rather than plumbing into the top of the tank.

Any help or advice greatly appreciated

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dive!dive!
Jr. Member
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Posts: 84


« Reply #1 on: March 14, 2015, 19:58:30 pm »

I used 3/8 inch Kunifer pipe - its pretty easy to bend, and I reckon 3/8 is more than enough for my engine aspirations. You can get end fittings that use an olive and terminate in either male or female -6AN.

See my other thread on SS braided hose....use as much hardline as you can and where you have to have flexibility use Teflon cored braided hose. I have finally just god rid today of every last bit of crappy rubber braided hose.....and can now sleep peacefully knowing I've done the best I can with my fuel system.

Oh. Forgot to say - do it properly and have a return into the tank, not the t piece.....in fact, have a think about a swirl pot and LP feeder pump as well while your are at it. Effort, but well worth it.

Steve
« Last Edit: March 14, 2015, 20:00:33 pm by dive!dive! » Logged
baz
Hero Member
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Posts: 753



« Reply #2 on: March 14, 2015, 20:31:29 pm »

Thanks for the reply. I was thinking something like in the pic below from flatlands engineering. So from what you are saying I could use kunifer and olive fittings and end up with this set up

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dive!dive!
Jr. Member
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Posts: 84


« Reply #3 on: March 15, 2015, 11:05:59 am »

I can't really see from the pic, but that looks like flared tube. Two ways to do hardline - like I did with an olive/compression nut fitting or flare the end of the tube to 37Deg and use a nut with that. Not sure if there are advantages either way, but I pressure tested mine to 10bar and they are fine.
But yes, I cant see why you couldn't have something that looks like that with kunifer.
Steve
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UltraOrange67-2443
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Posts: 1033



« Reply #4 on: March 15, 2015, 17:50:01 pm »

I've got Fragola aluminium lines with tube nuts & sleeves.

Purchased from Summit.

1/2"(-8) feed and 3/8"(-6) return.

You need a 37 degree flare tool.
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1967 1200 2920cc EFI
hotstreetvw
Sr. Member
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Posts: 291


« Reply #5 on: March 15, 2015, 22:54:00 pm »

I used 3/8" stainless from Jegs.  The rigid 37 degree flare tool worked great on this stainless, pressure tested to 140psi.  I exited the tunnel opposite the Bowden tube / throttle tube.  This picture shows one line plugged, the other with a barb (temp situation to run carbs).

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baz
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Posts: 753



« Reply #6 on: March 16, 2015, 01:11:32 am »

Excellent info, now I know what tools I need for the job.  Thanks very much
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