Brake line question

I am getting ready to install new brake and fuel lines. My question is what do you guys do at the fittings? Should I use a teflon tape or lock tight on threads before going into master cylinder and connecting fittings? Or do they just go in dry?

 

on the brake lines: just dry. I always use flare nut wrenches, not open end wrenches. Flare nut wrenches grab the flare nut on 5 sides to prevent damage to the shoulders of the hex.

 

Depends if you are talking about flare fittings------dry, or pipe thread fittings-----sealent needed.

 

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Good point I assumed flare nuts.

 

yes defiantly using flared fitting and tubes and thanks for the info. Also, can I use the same kind of steel tubing for both the brake and fuel lines?

 

As long as it is the right size and has the right fittings. My brake lines are stainless, most of my fuel is rubber except from the pump the carb which stainless, but it is larger than the brake lines. Are your new lines stainless steel? If yes make sure you use a tubing bender, don't try to do it by hand or you'll reduce the cross section.

 

Definitely no sealant. The seal is between the seat in the fitting and the inside of the flare. Sealant would at best do nothing, and at worst would contaminate the brake fluid.

Yes, the fuel and brake lines are the same type of tubing.

 

once again thanks to y'all

 

WAIT!!! BEFORE you buy the break lines, there is this stuff that is used on all the new european cars that is made of some mixture of copper and zinc or sumthing of the sort that is as easy to work with and bend as rubber tubing (almost) its a little more money but its really easy and will never rust, we used it on my dads pickup that he uses for plowing.


Edit** copper and nickel, just looked it up

 

"yes defiantly using flared fitting"


Don't forget these are "double" flared, if you are making your own.

 

Available here. http://www.fedhillusa.com/

 

Whoa, that looks like awesome stuff! Warloch was telling me about this tubing this morning. This may bear further research.....

 

its amazing, once you use it, you'll never go back to steel or anything else ever again, you can run new lines in minutes and just zip tie it to the old one, i love it!.

 

So, question.....I have a D30 front axle, and the brake line fittings on the 11" brakes are 7/16", whereas the rear fittings are 3/8". Will this require different size tubing to plumb the front brakes? Or can I use 3/16 tubing front and rear?

Sorry, I've never built brake lines before. 11" drum brakes F & R.

 

Ah, thank you sir! Appreciate it! I was afraid I was going to have to mix tubing sizes for front vs. rear.

 

Aaaaand, my order is placed and shipped! Gent at FedHill is very friendly and helpful.

 

My local NAPA has the same lines in standard lengths, with fittings installed and pre flared.