why do break lines curl coming out of the master cylinder - Hot Rod Forum : Hotrodders Bulletin Board
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Old 04-30-2007, 11:31 PM
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why do break lines curl coming out of the master cylinder

im just curiouse as to why the break lines curl coming out of the master cylinder i have to run new break lines tomorow and needed to know if the spiral is relavant

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Old 05-01-2007, 01:00 AM
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brake line curl

They curl to absorb vibration. If you have rubber body mounts and the brake lines are attached to the frame there will be a slight movement of the frame while the master stays put.
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Old 05-01-2007, 08:00 AM
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That is correct, the lines make a loop to absorb movement and vibration.

Here is the last one I did. I usually wrap the tube around a piece of pipe to get the loop.





At the body to frame juncture.

Later, mikey
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Old 05-01-2007, 08:08 AM
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Thats good to know. I just replaced the master cylinder on a 74 dodge power wagon. It was a lot easier then I thought it would be. The brake line looping was one thing I couldn't figure out though.
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Old 05-01-2007, 08:47 AM
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I thought they were there to prevent vapor lock...



-MESSIN WITH SASQUATCH-
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Old 05-01-2007, 09:46 AM
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Quote:
Originally Posted by KULTULZ


I thought they were there to prevent vapor lock...



-MESSIN WITH SASQUATCH-

You bored this morning Gary?


That guy on the receiving end of that "vapor stream" would have benefited immensely from a little loop in that tube.

Mikey
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Old 05-01-2007, 10:29 AM
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I get a big kick out of those and the CAVEMAN series.

Did I tell you my wife did the stand-ins for SASQUATCH?
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Old 05-01-2007, 10:42 AM
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Quote:
Originally Posted by KULTULZ
I get a big kick out of those and the CAVEMAN series.

Did I tell you my wife did the stand-ins for SASQUATCH?
I'll bet you get alot of hair in your dinners.. Or does she wear a full body hair net?

and there is got to be nothing more seductive than to hear her say..." Honey can you rake my back?"

She sounds HOT!

Now back on topic...even a caveman can put a nice vibration loop in a brake line.

hahahahaha

mikey
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Old 05-01-2007, 01:54 PM
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Quote:
Originally Posted by ricktt
They curl to absorb vibration. If you have rubber body mounts and the brake lines are attached to the frame there will be a slight movement of the frame while the master stays put.
I'm not sure that's the reason (or at least, not the only reason). On GM A-body cars, the lines on cars with power brakes got the loops, but the manual brake cars just had straight lines. I've always assumed that this was to provide a little "give" so you could change the power booster without disconnecting the brake lines from the master cylinder.
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Old 05-02-2007, 12:03 AM
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They did it for that too. but vibration was the primary reason.

Last edited by ricktt; 05-02-2007 at 12:04 AM. Reason: misspell
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Old 05-02-2007, 01:05 AM
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I always thought it was to help cool the brake fluid. Brian
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Old 05-02-2007, 04:30 AM
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I always thought it was so the fluid could do a loop-d-loop..........That makes it happy................so it won't try to escape through a hole in the line...............
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Old 05-02-2007, 05:07 AM
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Very nice job on those "curls" Mike.Really adds detail.
I like to use the lines with coil spring, find they help me to fine tune my curls n bends(also protect the line) ,then take them off,scuff with Scotch pad then clearcoat them.Kinda keeps the lines from discoloring.
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Old 03-03-2012, 06:33 PM
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Brake lines

Quote:
Originally Posted by excaliberprime
im just curiouse as to why the break lines curl coming out of the master cylinder i have to run new break lines tomorow and needed to know if the spiral is relavant
They curl to keep an equal distance from the master cylinder to each wheel in the circuit . Lets just talk about the front brakes for now . Because it the same for the rear . Anyway the drivers side is closer then the passengers side . So the front left would come on just a bit sooner then the front right . But by making the line longer on one side the distance is now the same . Or balanced . Get it ? If it was just for body flex they could use rubber . Think about it if you kept flexing that line it would fatigue and brake . Dose the fluid get a benefit of cooling well yes .
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Old 03-03-2012, 06:51 PM
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And you think Mr Obama is clueless..........

The correct answer is in post #2.....of this 5 year old thread........
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