Hand brake madness

I am trying to figure out the best way to plumb my handbrake hydro cylinder. The one in question is a Wilwood 3/4" compact master cylinder.

http://www.wilwood.com/PDF/Flyers/fl95.pdf



The car is already set up with 3AN adapters and lines. I've been trying to locate some 90 degree fittings for the two ports to go from the threading noted to 3AN but having issues locating what I need.

My question is would it be possible to use a banjo fitting instead with the copper crush washers? If so, how well will they seal or do I need to reface the surfaces of the inlet and outlet to get a better seal? Also, do the banjo bolts need to bottom out in the bottom of the fitting in the m/c (they are inverted flares).

Any other advise on how to hook these up and to keep the SS flex brake lines out of the way?

Thanks!

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

I'm not sure if banjo bolts come in that big of a size. 10 and 12mm are pretty standard.
The MC would have to be spot faced to make the crush washers work. What's wrong with doing it like everyone else?
rallyanarchy.com
Ah, flex lines. You can get the parts to add/build your own ends and just use fittings from summit, jegs, or any of the places that come up when you google an fittings.



Edited 1 time(s). Last edit at 03/16/2012 02:02PM by Robert Culbertson.

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Robert Culbertson
I'm not sure if banjo bolts come in that big of a size. 10 and 12mm are pretty standard.
rallyanarchy.com

They are available. I can get them at Baxter's Auto locally.

Quote
Robert Culbertson
What's wrong with doing it like everyone else?
rallyanarchy.com

That's the rub. I don't know what everyone else is doing and I am running out of time to figure it out for myself.

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

Well it looks like people are using hard lines that you can bend and install yourself for next to nothing in parts. The AN flaring tool from Rigid is great but $125.
If you are running braided lines, I would cut the lines, add AN ends, then use the adapters.
If you need something done pronto, any hydraulic shop (and there are a bunch in Portlandia) can add the ends for you in a more secure fashion. If you have the time to order the tools and supplies to install the -3 ends into the braided hose, it's not that difficult.
So are you running braided soft lines or hard lines through the car? If you have soft lines, what brand of hose? Not all hoses are the same so getting the right sized ends can be challenging.
If you need immediate help I can drive up and help you with either. I'm free this evening, but it's kind of a drive from Corvallis.

I used -3 AN to 7/16-20 (3265-22) and 3/8-24 (6262-3-STRT) banjos.
Can be found at Pegasus. The parentheses are part numbers.

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Grant Hughes

Grant- Did you use the Wilwood m/c? Did you have to reface the surface for them to seal or was it sufficient from the factory?

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

I have Girling ones up front and whatever came with my cheap K-Sport handbrake.
I just used copper crush washers and never had any issues. I have a dual output AN-3 banjo on my front circuit on the master also.

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Grant Hughes

Is the surface already spot faced/machined or is it all bumpy and grainy form being cast?
If you are really careful with a file you can lightly flatten the surface.
Also, make sure you look at the diagram for the hoses! Apparently everyone plumbs these backwards. (piccie in the link above to previous anarchist bleeding problems with same MC)

All mine had a smooth machined surface.

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Grant Hughes

Thanks guys! I am going to try the banjo solution first before custom hoses.

And I already made the mistake of hooking it up backwards.

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

3/4"?

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Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.

Yes. 2nd gen RX7 4 pot front calipers on the rear of this car.

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

This is on the 323 I'm guessing?
Also I'm curious, why did you choose to go with the 3/4" MC?

A great and inexpensive place to get pretty much any AN fitting in existence is http://www.anplumbing.com/.

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"The more I learn, the more I realize I don't know and have so much more to learn." - Claude Rouelle, Optimum G lecture June, 2011

I chose it as it came with the car. If it's too big, I'll try a smaller one.

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"I, for one, welcome our Robot Overlords." - Philip J. Fry

Fair enough, thats a pretty good reason!

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"The more I learn, the more I realize I don't know and have so much more to learn." - Claude Rouelle, Optimum G lecture June, 2011