1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rear axle brake line "T"?

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Old Apr 9, 2013 | 07:30 AM
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Rear axle brake line "T"?

I have a disc brake rear-end in my GS and I'm hooking up the brake hardline on the axle itself, but it looks like I'm missing a component. I've purchased the hose that connects the hardline from the brake unit to the hardline on the axle, but since there are two hard lines on the axle, I need a "T" or something.

I've searched high and low but I'm not sure what to call this component.

Does anyone know?
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Old Apr 9, 2013 | 09:41 AM
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From: https://www2.mazda.com/en/100th/
you mean FA18-43-642A? Mazda calls it a joint, its NLA.

i don't remember what the 1st gen part is like but on an FC, its literally just a block with the 3 passages drilled in it
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Old Apr 9, 2013 | 10:11 AM
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On the FB, it's more of a "Y", with a hole for an M6 retaining screw. If you list this in the wanted section, you may get some traction. I was able to find somebody willing to sell me just the spring seats for a conversion project.
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Old Apr 9, 2013 | 10:43 AM
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Originally Posted by j9fd3s
you mean FA18-43-642A? Mazda calls it a joint, its NLA.

i don't remember what the 1st gen part is like but on an FC, its literally just a block with the 3 passages drilled in it
I was wondering if I could use the FC equivalent. It doesn't seem like it's anything special. Thanks for the info.
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Old Apr 9, 2013 | 10:44 AM
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Originally Posted by elwood
On the FB, it's more of a "Y", with a hole for an M6 retaining screw. If you list this in the wanted section, you may get some traction. I was able to find somebody willing to sell me just the spring seats for a conversion project.
I'll post, but I'm in a time crunch! Thanks for the advice. I might just use the FC equivalent.
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Old Apr 9, 2013 | 11:34 AM
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From: https://www2.mazda.com/en/100th/
i think the FC part is a T, we're using one to add a brake pressure sensor on the race car
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Old Apr 9, 2013 | 11:40 AM
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Originally Posted by j9fd3s
i think the FC part is a T, we're using one to add a brake pressure sensor on the race car
45-291A-FB01, perhaps?
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Old Apr 9, 2013 | 11:50 AM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Dysfnctnl85
45-291A-FB01, perhaps?
yep
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Old Apr 9, 2013 | 11:56 AM
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Originally Posted by j9fd3s
yep
I'll try and source it locally but if I can't (and I'm not holding my breath), I'll go with that.

Thanks for the response!
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Old Apr 9, 2013 | 12:26 PM
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You should be able to get something like this from any parts store.
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Old Apr 9, 2013 | 12:32 PM
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Originally Posted by sommmatt
You should be able to get something like this from any parts store.
A caveat being finding someone willing to search for a part.

I have yet to encounter such a person .
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Old Apr 9, 2013 | 06:07 PM
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I Have One!

Man, It's your lucky day. When I sold my OEM rear axle, I thought I had shipped this part with it, but I hadn't. It's grimy, but otherwise in perfect condition. It even includes a SS flex hose.

If you want it, PM me your address, and I'll send it to you for free (oranges not included).
Attached Thumbnails Rear axle brake line "T"?-rear-brake-hose-1.jpg   Rear axle brake line "T"?-rear-brake-hose-2.jpg   Rear axle brake line "T"?-rear-brake-hose-3.jpg  
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Old Apr 9, 2013 | 07:42 PM
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Originally Posted by elwood
Man, It's your lucky day. When I sold my OEM rear axle, I thought I had shipped this part with it, but I hadn't. It's grimy, but otherwise in perfect condition. It even includes a SS flex hose.

If you want it, PM me your address, and I'll send it to you for free (oranges not included).
PM'd!

Send me them oranges, haha.
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Old Apr 9, 2013 | 11:03 PM
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Oh, great...I'm glad I saw this posting. I didn't realize the brake lines on the axles connected differently than they do on the drum brake axles. Now I'm looking for one of these. Glad I saw this before I started the swap. :/

fm
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Old Apr 10, 2013 | 02:05 AM
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Mine was missing too. Block of steel. Drill and tap 3 holes in it 10mm x 1mm. Offset the one for the soft line to drill a 6mm hole straight through so you can mount it. Costed about 2 bucks.
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Old Apr 10, 2013 | 01:25 PM
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MIKE-P-28,
If i can't find one soon, I'll fab my own...so simple. What thread are the brake lines?

fm
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Old Apr 10, 2013 | 02:09 PM
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I just used a t from my work (AutoZone). Didnt have metric thread so... Got two metric hard lines to fit calipers/hoses.. Cut off inside ends and flared on standard tube nuts. I did the same with a short section of line to the center hose.... Ill see if I can get a pic... Works great looks good too
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Old Apr 10, 2013 | 02:12 PM
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Here it is
Attached Thumbnails Rear axle brake line "T"?-image-1092495696.jpg  
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Old Apr 10, 2013 | 06:24 PM
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Originally Posted by zaridar
Here it is
That paint looks like it's an inch thick
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Old Apr 10, 2013 | 07:25 PM
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From: https://www2.mazda.com/en/100th/
the FD one looks close, F100-42-85X, its available, at least
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Old Apr 11, 2013 | 09:21 AM
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Originally Posted by elwood

That paint looks like it's an inch thick
Haha. I blasted the whole disc rear end then just spray bombed it... Only two coats... It's got a lot of pitting from the previous rust that Was on it... I have since switched to gslse rear w disc to support mosers and tII brakes... This go around I used brush on hammered tough to disguise some of the imperfections I like it anyways...
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Old Apr 13, 2013 | 09:27 AM
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Originally Posted by Fungus Mungus
MIKE-P-28,
If i can't find one soon, I'll fab my own...so simple. What thread are the brake lines?

fm
10 on 1 ... To be exact in techno speak 10mm diameter on 1mm thread pitch. Standard brake line used on about everything on the road. I know the new Siennas use it too. Hey now that I thinking of it. A lot of Toyota's use a distribution block on the firewall. The new sienna used a 6 way. Too many I know but opens up a lot of opportunity. You might even get something at the local hardware store semi close.
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Old Apr 13, 2013 | 09:02 PM
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Thanks Mike. Well, it happens that I found one from a part-out, so I'm good. But it's great to know I could have made one of these easily.

fm
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