Dual brake master cylinders as in 2 anyone do it?

Ken Ellis · Feb 10, 2018

Returning, in spite of the prospect of further disappointment... Might be old news, though.
Is 1" too large a bore? Might be 'booster(s) only' applications. http://www.jegs.com/i/Wilwood/950/260-7563/10002/-1
Tandem/remote reservoirs, vertical mounting hole orientation. Allegedly shippable Monday.
(There's also a nifty adaptor for horizontal versions, but it wouldn't be needed here. http://www.jegs.com/i/Wilwood/950/250-3677/10002/-1)

Toyanvil · Feb 10, 2018

1 inch is to big and the outlets are on the bottom.

PROCRAFT · Feb 12, 2018

Oh I dunno that's what were running and a single channel by the way.

jzuk7 · Feb 12, 2018

I'm following this thread and don't mean to hijack it. I want to switch to a dual circuit MC. Is anyone using the Ford Courier/Mazda B1600 MC with a 2.8 v6? The ports are on the engine side and I'm not sure if there will be enough clearance from the engine. I'm using the Wilwood girling type single port MC, and have about 1.25 inches between the MC body and valve cover. I'd like to know how long the courier MC is. And what are my options, if needed to use a 90 degree or banjo fitting at the MC.

Bill Blue · Feb 12, 2018

PROCRAFT said:
Oh I dunno that's what were running and a single channel by the way.

Stock calipers?
Bill

Toyanvil · Feb 12, 2018

jzuk7 said:
I'm following this thread and don't mean to hijack it. I want to switch to a dual circuit MC. Is anyone using the Ford Courier/Mazda B1600 MC with a 2.8 v6? The ports are on the engine side and I'm not sure if there will be enough clearance from the engine. I'm using the Wilwood girling type single port MC, and have about 1.25 inches between the MC body and valve cover. I'd like to know how long the courier MC is. And what are my options, if needed to use a 90 degree or banjo fitting at the MC.

I have banjo fittings on order, once they are here I can get you that info. I am also running a Wilwood girling type single port MC for my clutch, so I can look at the difference.

Toyanvil · Feb 14, 2018

I received the banjo fitting today, and they worked great. The bolt is 10mm x 1.25 and banjo is 3/8 24 inverted flare out. I also made a push-rod from a grade 8 bolt. jzuk7 with the fitting it is a little over 2 1/2 inches from center to outside of bolt, you could gain an 1/8 inch with a smaller headed bolt. Remember I am running a Miata motor and have a lot of room on the motor side.

Bill Blue · Feb 15, 2018

Yep, when re-engining an Alpine, you can be smart and start with a smaller engine! So much unused space. When you gonna install that turbo?

Did you make that yoke? Is it milled? Looks good.
Bill

DanR · Feb 15, 2018

Mr Bill, That is some more of Toyanvil's perfection. Beautiful as usual,

Toyanvil · Feb 15, 2018

Thanks' guys. I have not worked on the yoke, I try to do one thing at a time so my car is not down for long. I have an extra motor all rebuilt and ready to go in, so I thought it would be a good time to redo the brakes. With the motor out, I will have more room to replace the brake lines before the new motor go in.

jzuk7 · Feb 15, 2018

Toyanvil, thank you very much for the info! I will go out make measurements this weekend. But I have a few more questions....Do you have a part number for the bolt and banjo fitting? Do I need a banjo bolt that will match up with the type of flare that the MC has on the ports? Will the push rod that I have for the Wilwood MC work with the Courier/mazda MC? Thanks again! Joel

260Alpine · Feb 16, 2018

There are other banjo fittings that are thinner that use AN fittings.

PROCRAFT · Feb 16, 2018

Bill Blue said:
Stock calipers?
Bill

Toyanvil · Feb 16, 2018

That's a good idea Jim, if it is close. jzuk7 I was going to post the part numbers and what I did to make it work, once I am done.
If you need it how, I can give you what I have. The M/C is from a 1975 MAZDA B1600 1.6L L4 and the banjo bolt is 10mm x 1.25, banjo is 3/8 24 inverted flare, clevis is from Wilwood, out and the push-rod is a grade 8 bolt turned down. I used 3/8 24 inverted flare because I already have a 45 degree flare tool for SS line. I am in to it about $100.

260Alpine · Feb 16, 2018

Toyanvil, I bet it works great! I mentioned the other banjo fittings if the V6ers need more room. Make sure you have a little slack at the pedal too. For those with stock rotors, have you thought of using caliper spacers and vented rotors like the Capri guys?

Barry · Feb 16, 2018

260Alpine said:
For those with stock rotors, have you thought of using caliper spacers and vented rotors like the Capri guys?

Is there a vented 10" rotor that fits the Alpine hub and lines up with a "spaced" Alpine caliper?

260Alpine · Feb 17, 2018

Barry, I don't know. You may have to adapt another rotor. There is a Honda Accord rotor that is 10.2 diameter that could be adapted with a steel plate. Similar to what was done with the Nissan pickup rotor in some swaps. The European Capri guys use the Capri MK3 vented rotor or deep hat BMW slip on rotor.

PROCRAFT · Feb 17, 2018

Here's a thought why not get the 10.25 vented rotor from wilwood and make an adaptor plate( some thing that has been done before) and use their spacers to widen the caliper.

260Alpine · Feb 17, 2018

Joel, Good idea. I was just thinking of a way to use stock components with vented rotors for those that still use the 13" or 14" wheels. For 15" or larger you could use the 10.9" Nissan pickup rotor, like in the tech archives article.

Barry · Feb 17, 2018

The possibilities are endless; the problem is making any of them work with the Alpine spindle, Alpine hub, Alpine caliper and especially the Alpine caliper location.

Hope you can make it work.