Hard Lines 101

[GRX]

Originally Posted by MagmaJct

My understanding is that copper will work harden over time and crack. Does the nickel help this?

You are right about the older style pure copper lines becoming brittle. The NiCopp stuff is a Copper/Nickle/Iron/Manganese alloy which is said to be quite durable. I did some reading before buying line for my C-10 project. Many car restores swear by it and it''s all they use now. And certain European car mechanics said they have serviced Volvo and Rolls cars where the alloy lines are still in great condition after 40+ years.

[RustyBillet]

Hey BB72, it was a decent show, I'm still embarrassed by my truck since I haven't had much time to do anything to it. I'm doing quite a bit now-May for Showfest, are you going out there this year? Do you ever make it to the Whataburger cruise nights in Tyler? I'd like to meet ya sometime. Enough Thread-jacking, how's the hardline experiment going?
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[YBNORML]

Good thread! Some very good info in here.

[biggestjohn]

Originally Posted by MrGoodpliers

Double flare for steel and aluminum tubing and single flare for stainless, right?

37 degree single flare for stainless. Use AN fittings and also have to use tube sleeves.

[BB72CHEVKT]

been practicing....

[AusTx68]

Originally Posted by webfoot

AN is easy, all sizes are stated in 16ths of an inch. so 6 AN = 3/8 fuel line size, 8 AN is half.

I totally agree. Especially after reading all the woes of bending hard lines. I ran -6 AN fuel lines from tank to carb. Just laid it in the frame and fastened it down along the frame with loops. It couldn't get any easier. My kit was similar to the one shown in this link: http://www.summitracing.com/parts/SUM-PUMPKIT1/

[ray_mcavoy]

Originally Posted by MrGoodpliers

Double flare for steel and aluminum tubing and single flare for stainless, right?

Originally Posted by biggestjohn

37 degree single flare for stainless. Use AN fittings and also have to use tube sleeves.

Yes, 37 deg single flare w/tube sleeve if you're using AN fittings.

But if you're using stainless tubing with stock inverted flare fittings, you need a 45 deg double flare just like you would use on a regular steel tubing. And yes, stainless can be double flared ... you need annealed tubing and a really good flaring tool though.

Originally Posted by GRX

The NiCopp stuff is a Copper/Nickle/Iron/Manganese alloy which is said to be quite durable. I did some reading before buying line for my C-10 project. Many car restores swear by it and it''s all they use now.

Yeah, I've been using a lot of that NiCopp tubing lately as well. The corrosion resistance and the ease of bending/flaring it more than make up for the extra cost in my opinion. On restoration projects, I usually give it a light coat of silver paint to make it look more like the OE tin plated steel.

[gotchevys?]

I've never used the NiCopp. I'll have to look into it. I use Cunifer which sound like about the same stuff. I bought the Cunifer at http://www.fedhillusa.com/?page=home

For flaring I use one of these. http://www.eastwood.com/professional...ring-tool.html Its not very cost effective for the guy flaring an occasional brake line but man does it make nice flares. You cannot tell the difference between the flares it makes and a factory made flare.

[longbed67]

[QUOTE=gotchevys?;5266987]I've never used the NiCopp. I'll have to look into it. I use Cunifer which sound like about the same stuff. I bought the Cunifer at http://www.fedhillusa.com/?page=home

For flaring I use one of these. http://www.eastwood.com/professional...ring-tool.html Its not very cost effective for the guy flaring an occasional brake line but man does it make nice flares. You cannot tell the difference between the flares it makes and a factory made flare.[/QUOTE

Wow thats some expensive line!!!

[gotchevys?]

[quote=longbed67;5267478]

Originally Posted by gotchevys?

I've never used the NiCopp. I'll have to look into it. I use Cunifer which sound like about the same stuff. I bought the Cunifer at http://www.fedhillusa.com/?page=home

For flaring I use one of these. http://www.eastwood.com/professional...ring-tool.html Its not very cost effective for the guy flaring an occasional brake line but man does it make nice flares. You cannot tell the difference between the flares it makes and a factory made flare.[/QUOTE

Wow thats some expensive line!!!

Now that you mention it, I believe it has gone up since I last ordered it. It has been a while since I ordered any.

[ray_mcavoy]

Originally Posted by gotchevys?

I've never used the NiCopp. I'll have to look into it. I use Cunifer which sound like about the same stuff.

Yeah, most likely the same stuff ... just a different brand name.

The NiCopp I've been using is http://www.agscompany.com/automotive...n-lines/nicopp I get it at the local independent auto parts store. It's fairly expensive but quite as high as the Cunifer.

[slikside]

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[GASoline71]

Here's the one I made with 3/8" line...



Here it is installed...



Here is the flare tool kit and the tubing bender I used...



Gary

[BB72CHEVKT]

Originally Posted by GASoline71

Here's the one I made with 3/8" line...



Here it is installed...



Here is the flare tool kit and the tubing bender I used...



Gary

That looks good. You could get a side business going making them for Holley's and Edelbrock's!