Why the loop in Brake Lines

kiwicamaro · Apr 27, 2010

I am just installing a new Booster and master cylinder and making a bracket to house the line Loc and adjustable proportioning valve, and was hoping to tidy up the hard lines.
Why is there always a loop in the hard line after the valve, can you do with out it, it would look a lot tidier if I didnt need to loop it

parkbrau · Apr 27, 2010

It helps against work hardening I believe. Liquid lines that sit dangling without any brace will, overtime, become brittle and fail.

BPOS · Apr 27, 2010

Somewhere I read it was simply an aid for the assembly line. Gave them some flexibility when marrying the subframe to the body. Don't quote me on that. I hope that's the case - I made my own brake lines and didn't include any loops.

DOUG G · Apr 27, 2010

Was said to help on assembly line as said above...and I think for body/frame flex too ?

Pro-Street69Camaro468 · Apr 27, 2010

I made my own it was for looks for me and it does give some flex when taking a measurement.If your making your own I like to take a peice of tig wire and make paterns before bendind the brake line.

SPARKY69 · Apr 27, 2010

Gotta have a little loop in the line...it gives the brake fluid something fun to do when you hit the brakes!!..hahahaha..ita an assembly thing for flexability

john68 · Apr 27, 2010

I was thinking for vibration, not to transfer from frame to steering wheel, and dask??

zlek131 · Apr 27, 2010

I ordered new stainless steal lines from RightSuff and they did not have the loop in them. They may look better, but they were a pain in the butt during install as they were a bit too long. I had to creatively bend them so they would shorten up. If they had the loop in them, the install would have been a breeze. I guess better too long than too short as I am not sure what I would have done.

sandiegoz28 · Apr 27, 2010

I would expect the loops are there for thermal expansion/contraction reasons as well. Pipe curves are a lot more flexible than straight lines. If it were straight, it would probably crack overtime due to fatigue stress.

BPOS · Apr 27, 2010

From the horse's mouth. (Not to imply JohnZ is a horse)

http://www.camaros.net/forums/showthread.php?t=31006&highlight=loops

Fred Ficarra · Apr 27, 2010

Yep, as JohnZ says (our god) it was for ease of assembly. Little time had to be spent lining up fittings. Also, us kids used to look at the springs wrapped around the steel lines and talk smack about the springs being there for cooling when high performance racing. Yeah, right. The springs are there to keep the lines from kinking when tugged and bent to fit quickly on the production line. Kids,,,, Don't miss it.

zlek131 · Apr 27, 2010

OK, now you guys got me worried. If the loops are there to support flex (which makes total sense to me), why do places like RightStuff sell non coiled lines? Am I setting myself up for future issues by running lines without coils?

BPOS · Apr 27, 2010

zlek131 said:
OK, now you guys got me worried. If the loops are there to support flex (which makes total sense to me), why do places like RightStuff sell non coiled lines? Am I setting myself up for future issues by running lines without coils?

Read the thread I linked, esp the post by JohnZ. He was there when these things were built. Put your mind at ease.

Why the loop in Brake Lines

kiwicamaro

parkbrau

BPOS

DOUG G

Pro-Street69Camaro468

SPARKY69

john68

zlek131

sandiegoz28

BPOS

Fred Ficarra

zlek131

BPOS

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