Anything from 1989 up is good. Even better is 1992 to 2003.
Most of those engines come from Japan.

Uummm ...
I just bought and started tearing down an 87 to rebuild .... are you
telling me I have wasted my money on this now ???????
JOhnZ
Should be good for 500 to 1000 hours. It is just these engines
did not have nitride end housings as I recall so they wear a bit
faster than the later end housings. There are a few other minor
differences.

Ouch .... okay .... so what about using it for a mockup .... are  there
many differences if I use the 87 to build the mounts and the PSRU?

One step unrealized :-(
JOhnZ

Should be fine for a mock up. I hope you did not pay much for it.
--  Paul Lamar ...No rotor no motor.

   May be I got it wrong but  I think Tracy's first engine was an 88
which he put over a thousand hours on and on tear down found very
little wear. I have never heard anyone suggest that the 2 gen engines
would only last 500 to 1000 hours before today.  Jerry

I think it was 650 hours as I recall. He was very conservative on the
power as well with three small motor cycle carbs. I did not see
the end housings but the apex seals had some side wear. Probably still
within Mazda spec for apex seal wear. I checked the history chart
and I was wrong about the nitride end housing. That happened
in 1978. It was the ion nitride stationary and rotor gear that
happened in 1989. My mistake. Sorry.

BTW the steel liner was added in 1973.

I don't know the history of Tracy's engines.  Was not the victorious
Sun N Fun engine of a couple of years ago a fuel injected 2 gen
engine? As I recall it had turbo rotors, street ported 4 port.  I
believe the same engine was still on his plane when he switched to
the 2:85 drive and had accumulated a lot of hours.  I keep recalling
it had about 1000 hours but maybe that is a wrong.  Jerry

No he changed engines around 650 hours and then again when
the RX8 engine came out.



Paul Lamar ...No rotor no motor.

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