Technical coiled fuel line vs straight

Can I cut either and use compression fittings? I know the coil is 20 something long. Working on a 58 gmc pickup 6cylinder with Holley 4barrel carb.

Thanks

 

fuel line is fuel line. Eastwood sales a tool to straight the line out. Some members have made their own.

They just coil it for shipping purposes.

Link:http://www.eastwood.com/eastwood-handheld-tubing-straighteners.html


Edit: to add link.

 

K


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I ran hard line from tank to front frame rail where I used a compression fitting that connected to flexible line and up to engine. Just unroll the coil on a solid surface and it should be pretty straight. Keep coil vertical and at right angles to ground and unwind slowly. Cut the tubing square where you want the end to be.
This is the tool referred to but not cheap. It handles tube from 3/16" to 1/2". End rollers are fixed and centre is adjustable so tubing can be straightened. Do a pass and then clock tool 90 degrees for another pass and it should be right. Then you have to bend it. Use the OEM if available as a pattern.

 

I drilled a hole ( slightly bigger than the tubing )though a piece of wood 4 x 4 , chucked it in a vise and pulled the tubing through the hole back and forth a few times. Lubing it with some oil helps. Crude ,but works . I have since bought a straightener as mentioned above. Kind of expensive but works good. Bill

 

Might want to use double flare fittings instead of compression fittings....????

 

Double flare for low pressure fuel? Then he'll need double flare female fittings to match.

 

Inverted flare (double flare) brake fittings would be my first choice to.

 

There is no "double flare" fittings, it's an inverted flare fitting, and the fitting doesn't care if it's a single or double flare. Doing a double flare helps prevent cracking and ensure reliability.

 

yup....and I mentioned double because I was too lazy to type out your excellent explanation.

 

The double (inverted) flare is 45 degrees and single AN flares are 37 degrees, so the fittings are different. Just sayin'.

 

Thanks for straightening me out on that.

 

I am just going to use JIC fittings.

 

JIC fittings sound expensive and way overkill. JIC fittings are widely used in fuel delivery and fluid power applications, especially where high pressure (up to 10,000 psi) is involved.

 

I'll just braze everything together, then.

 

I guess I'll figure it out-


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Hey dtw, this was just getting good...

 

Yeah I moved on to another post so I can get the truck finished soon[emoji851]


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Compression fittings will work ok on fuel lines as long as you support the line the fitting is on well. In the past I always bought lengths of the right size tubing at the parts house with the inverted flares installed and used the proper fitting to connect the. Just lately I bought a roll of 3/8 tubing that I will join the "how the hell do I get this real straight" brigade with. Since I have an Eastwood flair tool I will probably run flair fittings all around. Thinking about it my 71 GMC has had a compresson fitting in the line for years after I took the stock seat tank out and extended the fuel line. That was one of those quick and nasty gotta get it done now things though.

 

Thanks 48 [emoji106][emoji41]


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Bent the fuel line. Needs paint now


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I wouldn't paint it, it gives definition to the engine bay.

 

I was thinking flat black to match the accessories on the engine


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Diesel injection lines use compression fittings a 3000 to 4000 psi I think you will be OK

 

Thanks beam I finished that project