automatic transmission swap from 83 to 85 rx7

1985 MAZDA RX7
4 CYL • MANUAL
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WILLIE BAILEY
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I am taking the automatic transmission from an 83 Mazda RX7 and putting it in my 85 manual RX7. I am using the rear eccentric shaft counter balance from the 83. Do I have to use the 83 front balance weight? Mazdatrix show the same part # for the 83-85 aft Both cars have 12A engines. I am installing the automatic transmission from the 83 to the 85. The 85 has a manual transmission.
Jan 14, 2012 at 5:42 PM
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RIVERMIKERAT
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From what I know, the aft eccentrics need to be for/from the corresponding type of transmission. The front balance is normally matched to the engine.
Jan 17, 2012 at 1:16 AM
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