How to Properly Double Flare a Brake or Fuel Line

[@twincamspit]

Thanks for this. It's the first video that showed how to measure the amount of pipe that should be thru the clamp

[@Bryanja81]

Thank you. Been a while since ive done a double flare and needed a refresh.

[@johnlaverty1598]

I have done thousands of break lines . This time I was trying to figure out why my flares are not coming out right. Probably just in a hurry and didnt realize I was using the wrong side of clamp lol. Thanks. Great demonstration by they way thumbs up bud

[@gapinatti3982]

Thank you for the video, I'm an auto tech apprentice and I've literally taught myself how to work on cars through youtube. Greatly appreciate it!

[@4DIYers]

No problem, always happy to help :) I have plenty more videos if you're looking for other topics.

[@burtreynolds3143]

another short and to the point video. I'll be attempting this after I get the front end components installed back on my Ranger.

[@4DIYers]

Thank you :)

[@brdavis]

Great video! Straight to the point with a lot of good tips.

[@4DIYers]

Thank you so much!

[@assassinprothe1st887]

Ahahaha yeah I made the mistake forgetting to put on the fitting. Cut it off flared it again to find out I forgot it AGAIN lmaoo. Awesome video man it's great. I did this with my brake line. But I came back to confirm that I could do it with fuel line also without leaks with a flare kit if done properly. Thanks man (liked video)

[@Adrian2140]

Hey thanks for this. One of the brake lines sprung a leak and ordered a new one but it's taking too long. Ordered the kit and line / nipple locally. Pretty sure they will get to me first. Armed with the parts and this video I might actually have the car fixed before the part order actually comes in.

[@4DIYers]

No problem!

[@Adrian2140]

@@4DIYers Update: they did indeed arrive first and the car is now fixed after following the instructions and ordering the same set :)

[@sugargraham6868]

Once you use the dye to form tha line do I remove it to do the 2 time

[@mjgoffice]

Great info, and the voice inflection is hilarious! Keep it up.

[@4DIYers]

Haha thank you, I appreciate the kind words!

[@rickeyb.9072]

Love your informative video that went into much detail on the correct way to double flare a brake line. Awesome! Thank you.

[@peterrichardsphoto]

Clear, concise and just what I needed to learn.

[@4DIYers]

Thank you!

[@DogMad1200]

THX for the great video, I've seen a few others but you explain and show so much more, excellent THX much as needed to do rear brake line on a 64 Meteor, original 55yrs old, now using copper/nickle lines so they should out live me

[@4DIYers]

No problem, always happy to help and thank you for the feedback :) Sounds like an awesome project, they definitely don't build them like they used too!

[@jnails113]

The OEM metric double flaring tool kit includes adapters (4.75mm, 5mm, 6mm, 8mm & 10mm). I'm doing a 3/16th brake line. Both the 4.75mm and 5mm fit in the 3/16 line. Which should I use? Converting inches to mm, 3/16 = 4.7625. However both adapters fit. Would I get a better flare using the 5mm? This is a one time shot, doing it on the car in a tight working space with the short end of a line that broke off. If it doesn't come out good, the only other option is to replace the entire line front-to-back with lots of bends.

[@4DIYers]

I would use the 4.75mm. If you have a piece of scrap line, maybe use that as a test instead. Keep in mind, a flare can get messed up even if you're using the right sizes. Best of luck, hopefully it works out!

[@RetroPCUser]

I gotta borrow that tool again. Apparently, the two lines that go to my rear brakes are leaking up front and didn't double-flare those lines as it's a PITA to flare under the car with no wiggle room.

[@michaelcrusoe3207]

Excellent video

[@4DIYers]

Thank you very much!

[@namrebyc]

Is there a different flare nut between a single and double flare? Or do they both use inverted flare nuts?

[@4DIYers]

It really depends on the application, this website explains it well racetrackdriving.com/tech/brake-line-flares-metric-sae-inverted-bubble/

[@deme7063]

cool ! I see you have the same exact work bench as I do. Even the same color lol

[@4DIYers]

Haha, right on! Perfect portable work surface and it's the right height too.

[@Josephuli]

Aaah! You saved my life! Thank you

[@4DIYers]

Awesome to hear and thank you for your comment!

[@Normanb15]

Can a double flare kit make single and double flares,?

[@4DIYers]

Yes it can be used to make both.

[@theram8787]

Cut and clean thanks.

[@4DIYers]

Thank you!

[@ThinBlueLineVideos]

Hugely helpful thank you

[@4DIYers]

No problem!

[@BeardedDaddyD]

Any tips on getting both sides flush when clamping. I always have one side higher than the other making my flare lopsided

[@4DIYers]

Use a good quality flaring tool, make sure the jaws are clean so it cleans down on the line, remove any burs on the cut line, make sure the line cut is square, and add a drop of oil to the flare dye.

[@mrcutestuff]

Love the vid, very detailed! :D

[@4DIYers]

Thank you!

[@olliefischer]

thanks for the great video :)

[@stuatwhakatu]

thank you

[@4DIYers]

No problem!

[@jonathaneves]

Thanks

[@4DIYers]

No problem!

[@mickymicetich6213]

You didn't show a close up of the small black flaring part , to help choose the right one

[@4DIYers]

You're talking about the die? Those are just based on the line size, the little dowel is based on the inside diameter of the line.

[@abrarzubair5710]

How made adupter in home

[@mitchpelky2239]

I can't do it

[@mihai-danut6955]

Briiliant video!Bless you

[@4DIYers]

Thank you :)

[@mihai-danut6955]

I thank you

[@nonamenoname-uj9wq]

you advertise flare for both brake line and fuel line don't see video for fuel line

[@4DIYers]

It's exactly the same process.

[@johng1902]

This is a question. First, the set up: In another vid, the presenter used red rubber grease because such is compatible with brake fluid, and using it prevents contamination to the brake fluid. This seems overly particular for such small amount of grease one would use, then wipe off, perhaps even, using brake fluid. So here's the QUESTION: how about using brake fluid as the lubricant on the tube and flaring tool tip?

[@4DIYers]

It's such a small amount, I doubt it would ever make a difference. You could always wash the fitting with brake cleaner just to be safe. Brake fluid does have some lubricating qualities, but be extremely careful not to get it on the paint. Some brake fluids are worse than others and can damage the paint.

[@nonamenoname-uj9wq]

i dont see die for making gm fuel lines not the same as brake line

[@4DIYers]

What type of flare is used?

[@timtaylor1999]

Have you tried a fuel line compression piece. Fuel is not high pressure like brake lines.

[@louisbrantmeyer385]

You did not sufficiently show how the second half of the flare is to be formed.

[@fredstone3875]

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