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Extended Brake Lines

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223 views 15 replies 6 participants last post by  Jeepmeister  
#1 ·
After all these years, I plan to install power brakes on our '83 CJ-8. Just purchased a system like the Crown unit complete with bracket, dual booster, master cylinder & proportioning valve for disc/disc (SSBC discs already in rear). We need to plumb brake lines from the new proportioning valve pre-mounted on bracket under the MC, down to connect with existing lines I'll disconnect from the existing proportioning valve mounted in original location, inside the frame rail.

My questions:
1. Use solid or flex lines?

2. What size AN fittings needed on ends to make the connections?

3. Any final words of wisdom would be greatly appreciated. I want to do this only once!! And do it safely & correctly.

Dave
 
#5 ·
But this is probably more what is meant by the context of discussion :)

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#8 ·
Absorbs vibration and allows flex between the devices attached on each end of the line.
Use the same concept with copper tubing for oil pressure gauge from block, through firewall, to gauge.

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#9 ·
Brake line pig tails

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#13 ·
I never knew what it was for either. (y)
 
owns 1985 Jeep CJ7
#11 ·
When I saw 'extended brake lines,' I immediately though of 'Brake Line Extensions' used for lifted vehicles. When I first installed the 4" Pro Comp lift on mine, it pretty much pulled the factory soft brake lines out to where they would've come apart during a trail ride. I found a set of Pro Comp braided steel brake line extensions to remedy that problem. Best $80 I spent on the lift (aside from the JKS Quick-Disconnect sway bar links, that is).

But, since you're not lifting the car, you probably don't need these. They did firm up the pedal a bit though, since they don't 'give' like the flex-hoses do.

I need to swap 'em out, but this is what happened to my 'pig tails' from the mechanical brakes when the power brake assembly was swapped on. I have a set of the proper lines, but someone was a bit too impatient when they put my booster on. ;) They still work, but man that looks a bit ghetto.

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#14 ·
Thank all of you for input. I apologize for the misleading header. Those extensions were performed years ago. What Devil Dog showed is rxactly what I need . . . But with one exception: I need a male fitting on one end and a female on the other. Remember, rhis is to extend the brake lines from the area of the old prop valve up to the new valve under the MC. Who builds such a line? Thank you,
Dave
 
#15 ·
You use an inverted flare union to connect the old line to the new line. They don't make a hard line with male on one end and female on the other for inverted flare lines. Any auto parts store has pre made lengths of brake line in the 30" or so length that you should need.