The only one with a male thread is the Dorman.

The Hurst line lock is 1/8" NPT ports. Fitting for 3/8-24 inverted flare 3/16" tube is - Dorman 785-456D. Weatherhead 252X3. Edelmann 126320

Any auto parts store should have them.

Thank you CMcAllister. That is exactly the info I was looking for.

I only need one of those fittings right?

One last question, we have 3/16" brake lines correct?

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One last question, we have 3/16" brake lines correct?

Depends. How many lines are you going to plumb into it?

One from the MC. Then you can run individual lines from the line lock to each wheel. Or a single line with a T for the left front on the line running to the right side. Unused ports on the line lock will be plugged with a pipe plug.

Probably should have asked. What is on this for brakes? All stock?

If so, the line lock should be the last thing in the system before the front brakes.

1972 Demon not stock

Wilwood front brakes stock rear drums for now but will be Wilwood rear discs too.
451,727

Once the stock stuff comes off, the original prop valves and anything else should come off as well. And replace it with what?



Race car?
Big tires in back, littles in front? Or close to original tire sizes? 205/65R15 front
255/70R15 rears

OE MC or Mopar aluminum? If it's the aluminum unit, what did it come off of? Aluminum Mopar, don’t recall it’s about 20 years old. Whatever the popular hey get this stock one was then.

And replace it with what?

Nothing. Except maybe a manual adjustable brake proportioning valve if the need is there.


Aluminum Mopar. The aluminum Mopar style MC typically used the rear port (nearest to the pushrod) as the primary port. This will be used for the brakes you want to have the highest percentage of braking. On a big rear/skinny front tire car, this will be the rear. On a street car which typically has the big brakes up front, the rear port would be the one to use for the front.

When putting big bore caliper disc brakes on a car, it is easy to get to where you need a bigger MC to provide the extra fluid. Big 4 piston calipers will need an 1 1/8" master, usually. I say usually because I've seen Wilwood kits come with small piston calipers for some reason.

How would I not replace the proportioning valve with something? How would the brake fluid get from the MC to the line?

For what it’s worth my 70 Duster utilizes no proportioning valve, a 15/16 aluminum master cyl which offers some pedal “feel”, the front Wilwoods are plumbed from the front port, the rear Strange brakes are plumbed from the rear. I purchased a proportioning valve to meter the fronts, but never used it. Stops just fine from 145ish mph.

A race/performance brake system is very straight forward. Yes you will have to make some new lines.

Master cylinder. Line from the master cylinder to tee to rear brakes. Line from master cylinder to line lock to tee to front brakes. Some folks will use the line lock as the tee, depending on where it is mounted and how they run their lines.

The MC connections depend on which end of the car you want to have the most brake bias.



Very typical. If you have four 1.75" bore 4 piston calipers on all 4 corners, you likely have a bit of a low pedal, but with a pump or two it will throw you against the belts, I don't install an adjustable valve unless it is needed for some reason. Matching caliper sizes (piston area really) with MC bore and port connections, I've never had to use one.

Mixing and matching stock stuff, disc/drum, weird MCs, is where the bandaid adjustable valve will likely be used.