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What year is my spare 12A?

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Old Jul 20, 2014 | 08:55 PM
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What year is my spare 12A?
I picked this one up to port and make some power with... Then swap into my '80. My 80's 12A does not have the sensor behind the oil filter, I assume oil pressure sensor. The spare 12A has one. So which year you think and are there other differences worth noting?
Rotor aluminum housings seem shinier, like they are coated, also the spark plug holes have a half circle shroud over them that is more pronounced.
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Attached Thumbnails What year is my spare 12A?-img_4779.jpg   What year is my spare 12A?-img_4778.jpg  
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Old Jul 20, 2014 | 10:21 PM
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have eye brows so 81 -85
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Old Jul 21, 2014 | 07:53 AM
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Not 83-85
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Old Jul 21, 2014 | 08:17 AM
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No issues with mating this to my 80 transmission or swapping with an 80 right?
Thanks
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Old Jul 21, 2014 | 08:36 AM
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It will mate
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Old Jul 21, 2014 | 09:38 AM
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From: https://www2.mazda.com/en/100th/
its an 82, as it isn't an 83-85, and it doesn't have the screw in heater fitting of the 81.
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Old Jul 21, 2014 | 10:27 AM
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I agree. It is an 82 due to a short pressed in fitting and no beehive.
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Old Jul 21, 2014 | 10:57 AM
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From: https://www2.mazda.com/en/100th/
Originally Posted by Jeff20B
I agree. It is an 82 due to a short pressed in fitting and no beehive.
oh beehive! its also got the newer oil filter pedestal, since they used it on the FC, its less cool than the early one
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Old Jul 21, 2014 | 11:13 AM
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Great! Thanks again!
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