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

Quick brake question

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Old Aug 19, 2012 | 07:57 PM
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Question Quick brake question

I have a 1980 (SA) and need to do the rear brakes. Are the drums, shoes, and "parts kit" the same for an 81-85?
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Old Aug 19, 2012 | 10:17 PM
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Nevermind, looked it up. Not the same. Anyone know what the difference is?
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Old Aug 19, 2012 | 11:43 PM
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no clue as to the differences. unless the FB had a larger diameter drum i can't see how they'd be difference. or maybe the SA didn't have the auto adjusters.
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Old Aug 20, 2012 | 02:08 AM
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premix, for f's sake
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i could measure some parts out for you as i have both axles laying around at my shop, but i remember running into this a few years back when i bought some drums and shoes for my '79. something about a pre-something month '80 build date.... either way, i still have a set of brand new, never used early SA shoes and drums :O
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Old Aug 20, 2012 | 07:25 AM
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I already ordered shoes, but I could use those drums! What I found out was that the early '79s had a different style of drum, the late '79-80 used the same style drum. The '79-80 had manual adjusters and the '81-later had automatic adjusters and a different size backing plate behind the drum (they won't fit on the '79-80 and vice versa).

Either way I'll be PMing you about those drums.
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Old Aug 20, 2012 | 10:45 AM
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From: https://www2.mazda.com/en/100th/
lol, i was going to say i think the shoes are the same size, but everything else is different...
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Old Aug 20, 2012 | 12:17 PM
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Waffles - hmmm good
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Yeah SA == different from FB! Always!
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Old Aug 20, 2012 | 12:38 PM
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From: https://www2.mazda.com/en/100th/
Originally Posted by t_g_farrell
Yeah SA == different from FB! Always!
lol, yeah that is the easy way to look at it!
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