Brake Line Repair, Can I Splice?

Contrary to popular belief it is NOT illegal to make a new section of brake line and splice it into a non-rusted section of your old brake, as long as you use automotive grade SAE double/inverted flare, SAE "bubble" flare and DIN Single Mushroom flare unions and fittings.

You cannot, under any circumstances, use compression fittings to repair the lines on a public transportation vehicle. Many states have banned the use of this repair on passenger vehicles, too. In addition, you might find that compression fittings will cause your vehicle to fail inspection.

Also Know, can you repair brake lines? Leaking brake lines are common in cars in areas with snow and ice. This is because of the salt used on the roads as it causes brake lines to decay. The best thing you can do to repair leaking brake lines is to replace them. It's a fairly straightforward auto repair you can DIY.

Also know, are brake line unions safe?

If you are adding a nut to the cut line and double flaring it, using a brass threaded union, then yes that is 100% safe and the correct method to repair. Compression unions are used for psi in the hundreds. Not in the thousands scale of brake psi.

Do you have to flare brake lines?

Flaring brake lines ensures a leak-proof connection without extra materials or sealants. If the brake lines aren't properly flared, you can lose fluid that will cause your brakes to fail. This article will explain how to flare your brake lines using single and double flares.

Jihane Zheldakov

Professional

How do you stop a brake line leak?

Loosen the steel brake line.

Prepare a vacuum hose to prevent brake fluid from leaking out of the steel brake line.
Locate the steel brake line on the plate where it screws into the wheel cylinder and use a line wrench to loosen the brake line fitting.
Remove the fitting.

Toufiq Zede

Professional

Can you use JB Weld on brake line?

Sorry, but the ONLY safe thing to do is replace the brake line. JB weld is great stuff, but not on the most important part of controlling your car. Don't even use a compression fitting on your brake system. You will press on the brakes as hard as you can in a panic stop situation.

Loni Uragano

Explainer

Do brake lines need to be double flared?

Single flares are not acceptable for brake lines and tend to crack and leak quite easily. 2. A double flare is one of the most common flares found on vehicles. With these flares you're forming the end of the line twice, actually folding the lip of the single flare over.

Zaki Abdulrakhmanoff

Pundit

Can you fix brake line with rubber hose?

You can not use regular rubber line with a brake system. First, even with a barbed or rolled end, the clamps will not stand up to the 100+ psi. Second, brake fluid is not kind to rubber hoses. Third, the pressure will burst regular line even if the clamps held.

Domingas Louzao

Pundit

Can you join brake pipes?

"Brake line fittings are created to support the flared end and help it deform in a controlled mannor against the correct face for the selected flare. When you join a male and female brake line fitting without the correct coupler, the flared pipe will not deform correctly and will not seal correctly.

Milagrosa Francisca

Pundit

What size brake lines should I use?

To keep your build simple, it's recommended to use the same size brake lines for both the front and rear brakes. We suggest 3/16-inch line for most applications, although some rodders use 1/4-inch line.

Kissima Holanda

Teacher

Can you solder brake lines?

Brake line build info

Yes, you can solder brakeline. You need to use silver solder with the correct silver solder flux. Use a MAP gas torch.

Nathalia Ulferts

Teacher

Can compression fittings be used on fuel lines?

Double flare tubing compression fittings are safe to use on fuel and hydraulic lines. Always check with a fluid power engineer for fitting recommendations on high pressure (>2000PSI) hydraulic systems. Fittings for pressures up to 3000PSI are fairly standard.

Lijing Strahl

Teacher

What do brake lines connect to?

How to Connect Two Brake Lines. A combination of metal and flexible rubber brake lines carry brake fluid from the master cylinder to each each wheel cylinder or caliper. Sometimes the lines travel through a proportioning block where the line pressure becomes equalized, then travels to the brake cylinders or calipers.

Izola Yatabare

Reviewer

Are Compression Fittings safe?

Although compression fittings are generally considered more reliable than threaded fittings, there are some potential problems. In general, compression fittings are not as resistant to vibration as soldered or welded fittings. Repeated bending may cause the ferrule to lose its grip on the tube.

Anayansi Mikheenkov

Reviewer

How much does it cost to replace brake lines?

The average cost for a brake line replacement is between $211 and $324. Labor costs are estimated between $40 and $51 while parts are priced between $171 and $273. Estimate does not include taxes and fees.

Maxime Bibler

Beginner

What is the best brake line flaring tool?

Our 10 Picks of best brake line flaring tool

RIDGID 83037 Model 458R Precision Ratcheting Flaring Tool.
OTC 4503 Stinger Double Flaring Tool Kit.
ABN Bubble Flare Tool & Double Flaring Kit.
Neiko 20656A Auto Double Flaring.
K-Tool International KTI-70081 Brake Line Flaring Tool.
Yellow Jacket 60295 Flaring Tool.

Lezlie Tellis

Beginner

Can I use a single flare on brake lines?

Single Flares are only acceptable on low-pressure lines, but not acceptable for high-pressure brake systems. A single flare is just as it sounds, the line is flared out just once in a conical shape. Single flares are not acceptable for brake lines and tend to crack and leak quite easily.