starter replacement for different years
#1
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starter replacement for different years
i was wondering if you bought a starter that came of an 85 12a engine will it be a direct bolt on to an 81 12a? or will there be a difference , im hearing that there are different tooth sizes but im not quite sure
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AFAIK, all rotarys (12a vs. 13b) and all years use the same starter, except for the automatic transmission units, which have a different number of pinion teeth (11 vs. 13, IIRC).
#4
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Aaaah, not exactly. All "FB" starters have the top bolt hole threaded and the bolt comes from the front and threads into the starter. The "FC" starters are not threaded and use a longer bolt and nut. They are interchangeable, just remember if you grab a "FC" starter you need the nut and bolt that comes with it and visa versa.
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There are different size gears on the starter. I don't know the exact years each was used, but I know a 79 starter would not work after I dropped an 85 12A into the 79. I had to grab the starter off a dead FC, as the 85 was an auto.
This really had me baffled, because I compared the flywheel and ring gear diameter of both the 79 flywheel, and the 85 flywheel I swapped onto the formerly auto engine, and they were the same. The ring gear needed replaced on the 85 FW, so I placed it against the 79 FW, and the ring gears were identical. Yet, the 79 starter would not engage the 85 FW.
This really had me baffled, because I compared the flywheel and ring gear diameter of both the 79 flywheel, and the 85 flywheel I swapped onto the formerly auto engine, and they were the same. The ring gear needed replaced on the 85 FW, so I placed it against the 79 FW, and the ring gears were identical. Yet, the 79 starter would not engage the 85 FW.
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Check these listings. I would say that auto's are divverent and early SA's are different. http://www.autopartswarehouse.com/se...h=Mazda%20RX-7
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