Brake line size?

[Mishka]

How thick is the brake line that's on driverside frame rail on a 1991 f250HD 4x4 extended cab? Mine busted and I'm looking at this to replace it 4LifetimeLines 25' 3/16 True Copper-Nickel Alloy Non-Magnetic Brake Line Replacement Tubing Coil and Fitting Kit, Inverted Flare https://a.co/d/9Qoffpf

 

[Big Bart]

Not sure on size others will know.

You will also need a flare kit to finish the line ends if you do not have one.

Auto parts store may loan/rent one but likely worn.

Practice a couple times on the left over line if you have not done flares before, a little practice will help.

Here is a flare kit on Amazon that appears popular

https://www.amazon.com/ABN-Bubble-Flare-Double-Flaring/dp/B07FDGYS9S/ref=zg_bs_15707271_18/130-3122641-6908764?pd_rd_i=B07FDGYS9S&psc=1

I have one of these, it is awesome!

https://www.amazon.com/TGR-Professional-Brake-Flaring-Degree/dp/B01HOXH242/ref=zg_bs_15707271_11/130-3122641-6908764?pd_rd_i=B01HOXH242&psc=1

You will also want flare wrenches if you do not have them. (So you do not strip the brake line flare nuts.) I have the Husky ones from Home Depot but here are some popular ones on Amazon.

https://www.amazon.com/Sunex-Metric-Wrench-Polished-2-Inch/dp/B000XW4CCM/ref=sr_1_8?crid=1GHVC9XD11Y1U&keywords=Flare+wrenches&qid=1656113886&s=automotive&sprefix=flare+wrenches%2Cautomotive%2C161&sr=1-8

 

[46Gunz]

Just did some brake line work on my 1991 F250 recently and I used the 3/16" copper nickel line. Its way easier to work with than the steel lines.
I used this flare tool... easy to use when the line is on the truck.

https://www.amazon.com/Titan-Tools-51535-Double-Flaring/dp/B06XPRVCPV/ref=mp_s_a_1_6?crid=2ZSWF3FLYUFS2&keywords=double+flaring+tool&qid=1656128348&sprefix=double+flar%2Caps%2C213&sr=8-6

Also used these stainless steel flare nuts.

https://www.amazon.com/gp/aw/d/B01MV96595?psc=1&ref=ppx_pop_mob_b_asin_title

 

[Mishka]

Just did some brake line work on my 1991 F250 recently and I used the 3/16" copper nickel line. Its way easier to work with than the steel lines.
I used this flare tool... easy to use when the line is on the truck.

https://www.amazon.com/Titan-Tools-51535-Double-Flaring/dp/B06XPRVCPV/ref=mp_s_a_1_6?crid=2ZSWF3FLYUFS2&keywords=double+flaring+tool&qid=1656128348&sprefix=double+flar%2Caps%2C213&sr=8-6

Also used these stainless steel flare nuts.

https://www.amazon.com/gp/aw/d/B01MV96595?psc=1&ref=ppx_pop_mob_b_asin_title

Sweet and that's the same line material I used, 35$ shipped from Amazon can't beat it. How long of a job was it to do? Trucks currently at my bosses house as he's got all the good stuff so I can't go out and inspect it

 

[ROCK HARVEY]

I did my rear brake lines last fall with the exact 4lifetimelines brake lines you asked about. It was very easy to bend and flare. I used a cheapo flaring kit from Amazon, and I got a tube bender and small pipe cutter from lowes. I used a cheap countersink drill bit to chamfer the inside of the tube, and a hand file to deburr the outside after the cut. I had never done it before, but there are some great YouTube videos on how to do it.

My only complaint about the copper nickel line is that I was under my truck yesterday and saw that there was noticeable corrosion on it already. You might think about spraying a coat of paint on it.

 

[ROCK HARVEY]

I forgot to add that you’ll also want to pick up an assortment of flare nuts, the truck uses different sizes in different places. All 3/16 line, the nuts are just different.

 

[ROCK HARVEY]

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I checked my notes, and I installed this brake line on December 10, about 6 months ago. I recommend putting a coat of paint on it to slow down the corrosion.

 

[46Gunz]

I did the front line that goes behind the cross member and the rear axle sections. I would guess an hour or two for part running down the frame rail. There are a few things that you will have to work around.

Rock Harvey, that's not something I was expecting to hear. I guess I will be going back under the truck soon. I have been using black cosmoline a lot on this truck. I like it so far. I have been spraying some rusty areas to see if it will stop or slow the process. Its only been a few months, so still watching and waiting.

 

[Mishka]

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I checked my notes, and I installed this brake line on December 10, about 6 months ago. I recommend putting a coat of paint on it to slow down the corrosion.

I'm about to wire bush whole underside after I weld a few floor panels in and I'll make sure to cost my brake lines in the frame paint then.
Crazy what a leaking windshield and rain gutters do....cab is in rough shape but frame is overall great shape for age and miles

 

[Old Goat]

HF has this Brake line kit, similar to the Amazon one
if you don`t want to wait for shipping.

Deluxe Flaring Tool Kit

Amazing deals on this Deluxe Flaring Tool Kit at Harbor Freight. Quality tools & low prices.

www.harborfreight.com

Goat