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

Brake Line Thread Pitch?

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Old 10-25-02, 12:41 PM
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Question Brake Line Thread Pitch?

I have been told that for the 1981 model year, Mazda changed the thread pitch on the brake line fittings to 1.25.

Is this correct and if so, what thread pitch is the 79-80 RX-7s use?

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Old 10-25-02, 01:09 PM
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Re: Brake Line Thread Pitch?

Originally posted by miata/rotary nut
I have been told that for the 1981 model year, Mazda changed the thread pitch on the brake line fittings to 1.25.

Is this correct and if so, what thread pitch is the 79-80 RX-7s use?
I don't know what the thread pitch IS, but I can confirm that they are different.

They are same in these year sets.

79-80
81-83
84-85

What do you need the thread pitch for?
Stainless Brake Lines?
Adapters?

What?
Old 10-25-02, 02:33 PM
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I have a set of stainless steel brake lines which are 1.25 thread pitch and I dont know for sure if they are off of a 79-80 RX-7. The package is open and I think the calipers are not the original on the front.
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