What size is the brake line?

[Eclipse 1998]

So both of my rear brake line have rusted through, so i had cut out the rusted part of the brake lines and are in the process of putting on compression fittings to repair the broken lines. My problem is after i used the pipe cutter to get my clean cut, the 3/16" compression fitting is too small and will not fit, and 1/4" is way to big. Does anyone know the size of the compression fitting i need to finish this patch job? Once again its for the brake lines. Thank you.

 

[arrowhead]

You certainly dont want to do that,,get new lines they are very cheap and available if you have to make a union there are also fittings available.
FWIW besides being dangerous they are also prohibited by DOT.

Check the rest of your lines and after making the proper repair flush the system from the master cylinder all the way to your calipers and then add new fluid, the ONLY thing you should flush the lines with is denatured alcohol, (wood alcohol), you can purchase that at any home repair store,

 

[Eclipse 1998]

Its a temp fix, and i have seen it done on other cars and other DSM's why is it such a bad idea?

This is what im talking about.

Already read this thread thanks man!
http://www.dsmtuners.com/threads/need-help-fast-cut-brake-lines.476659/#post-153409038

You must be logged in to view this image or video.

 

[Eclipse 1998]

Why is it such a bad idea i have seen it done on other cars, and on other DSM's?
I was just wondering the size of the brake line bc this is my DD and i have no other choice right now it will have to do for a temp fix, too many other problems to wait for new lines.

This is what i'm talking about in the PICTURE.

Also i have already read this thread,
http://www.dsmtuners.com/threads/need-help-fast-cut-brake-lines.476659/#post-153409038

You must be logged in to view this image or video.

 

[arrowhead]

I have also seen it done many times, and I have also seen them leak or the end of the tube split, too risky for me. BUT........

 

[SrKegler]

You'll have to take sandpaper to the line. Get all the paint and corrosion off before it will slide on. Tight fit even then.

 

[Eclipse 1998]

You'll have to take sandpaper to the line. Get all the paint and corrosion off before it will slide on. Tight fit even then.

But what size fitting do i need? What size is the brake line? Thanks!

 

[Paul@RTM]

It's 3/16"

 

[Eclipse 1998]

It's 3/16"

I tried it, it does not fit. I think its metric?

 

[Marchev]

The line is 3/16. The fitting is a very tight fit and you have to sand down the line a good bit to make it fit over. Ive used this method before with no issues

 

[Eclipse 1998]

The line is 3/16. The fitting is a very tight fit and you have to sand down the line a good bit to make it fit over. Ive used this method before with no issues

Okay so whats the best way to sand i down? and what grit did u use?

 

[Marchev]

Grab 180 or 220 grit and go to town with it by hand

 

[Eclipse 1998]

Forgot to update, 180 grit worked like a charm only took me like 2 mins per line to sand down where I was able to slide the fitting on thanks Marchev. So far the rear brakes are holding up with no leaks!

 

[pauleyman]

No compression fitting should be used on a brake line and for damn sure not a brass one. That is unsafe. Period.

 

[Eclipse 1998]

I know this, it even says on the box not to use them on brake system. Although I have found threads on this site where people have done it with no problems, also have friends that have done it and have not experienced issues in the years they have been on. I didn't wanna do it this way either but I was assured it was ok to do it.

I'm open to other options but this is the only one I was informed about, also why is a brass fittings more of a safety hazard opposed to say steel?

 

[tmoney20g]

Owning a gun is cool too, but going out and killing people isn't. Just repair it the right way when you get a chance.

 

[Eclipse 1998]

Owning a gun is cool too, but going out and killing people isn't. Just repair it the right way when you get a chance.

What would the correct way be then, other than replacing the lines completely? I was only aware of this way?

 

[tmoney20g]

call/email/pm stevie miller and get some replacement lines.

 

[tmoney20g]

Not giving you shit, but worst case is that fix gives out and you're left with no brakes going 70mph, you know ?

 

[tmoney20g]

Just looked up part numbers, not sure if it's the exact one, but on JNZ's site, pretty cheap:

TUBEBRAKE MAINLH
Make: Mitsubishi | Part#: MB895888 List Price: $25.37 Your Price: $19.63

 

[pauleyman]

Brass is soft and rated for low pressures. At least a steel fitting would have been better. You said you read that other thread. It described exactly what you should have done. Replace the line or get a proper fitting and double flare tool.

 

[pauleyman]

It isnt that you couldnt do it. You shouldnt do it.