Paul,

It seemed their was a clearance issue when installing the Renesis rotors
in a 13B engine.  Do you recall what it was?  I think the gears, and
bearing may be different as well.

Doug in Japan

News to me.

Paul Lamar

Paul, I have read that the renesis uses hardened stationary gears like the
20B where the 13B are not hardened
The e-shaft journals and  coorisponding stationary gear bearings have a
slight taper to self center the rotor in addition to the thrust bearing
providing the limit of restraint. These changes allow a tighter side
clearance on the rotors. The rotors have an additional side seal
necessitated by the new side porting. I would ask Mazdatrix before changing
rotors, they can fit with straight bore stationary bearings or just use the
RX8 e shaft which was only about $149 two years ago, not priced lately. Also
the counterweighting parts always are matched to rotor weight.

george grimes


Late 13b phasing gears are hard. Anything after 1989 as I recall.


Paul Lamar