I know I asked before, but I can't find the data  on s-4 and s-5
   engines.
   Which years are they again?
   Tom

   The Aussies are the guys to ask on that as even Mazda does not refer to
   them in that way.

   Mazda refers to the RX7 as first gen, 2nd gen and third gen.

   --
   Paul Lamar ...No rotor no motor.



Series 5 is 89-91.  I believe series 4 is 87-88.   Both are second
generation.