12a rotors - 3mm apex seal variety

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Engine - Internals

Jun 15, 2023, 02:01 PM | Replies: 3 | Views: 602
  • Engine - Internals - 12a rotors - 3mm apex seal variety - Used - 1971 to 1984 Mazda RX-7 - Seattle, WA 98126, United States
    Expired
  • Engine - Internals - 12a rotors - 3mm apex seal variety - Used - 1971 to 1984 Mazda RX-7 - Seattle, WA 98126, United States
    Expired
  • Engine - Internals - 12a rotors - 3mm apex seal variety - Used - 1971 to 1984 Mazda RX-7 - Seattle, WA 98126, United States
    Expired
  • Engine - Internals - 12a rotors - 3mm apex seal variety - Used - 1971 to 1984 Mazda RX-7 - Seattle, WA 98126, United States
    Expired
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  • Price
    $150
    • OBO
  • Location Seattle, WA, 98126, USA
  • Condition Used
  • Compatibility
Make Model Year
Mazda RX-7 1971 - 1984
Description:

I've got two 12a rotors available, each with a different type of combustion pocket.  I'm a 13b guy so I don't know what models these would have been from (enlighten me).  Both are a bit dirty or with some light surface rust, but no nicks or damage and all edges are clean and sharp.

How about $150 each OBO, buyer pays shipping.

Let me know if you have further questions to help ID them for you.

Dave

Old Jun 16, 2023 | 12:38 PM
  #2  
j9fd3s's Avatar
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From: https://www2.mazda.com/en/100th/
F N is Front Non Turbo, so 83-85.
the other is 74-78, its MDR combustion recess vs the LDR from 79-85
Old Jun 16, 2023 | 02:05 PM
  #3  
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Thanks for that info. Now to see if anyone needs one or the other.
Old May 12, 2025 | 08:40 AM
  #4  
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From: Michigan
do you still have these rotors?


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