Can you tell me what the ID'd are for the rotor bearing and stationary
gear bearings? I am also curious as to how the "Guru" needle bearing
attaches to the center housing. I see the snap rings and the note of the
machining requirements.

Rob Woods

I assume you have the shop manuals. The recent shop manuals
give the diameters in the technical section at the end of the
manuals. The 13B journals  diameters are 43 mm mains and
74 mm rotor journals. The clearances are given in the front part
of the manuals in the Inspection/Wear section.

You can download the manuals from here:

http://www.wankel.net/~krwright/cars/rx7/manuals.html
This web site is listed on the ACRE NL web site
under http://www.rotaryeng.net/interesting.html

As far as the Guru center main roller bearing attachment
is concerned my guess is it is pressed in. All I have are these
pictures.