I want to buy or build an adapter to mount my Renesis to a conventional
engine stand.  Where on the engine should the adapter mount?  I don't want
to take a chance on breaking out the bosses.  I was thinking that the motor
mount bosses might be ok, but I saw where several were for sale that mounted
on the AC mount bosses.

         I made my own from two short lengths of 2" x 2" x 1/8" steel
angle. I welded the two angles back-to-back to form a Z section about three
inches deep. I welded on a couple of gussets to take out some of the "waggle".

         If I were to do it all over again, I would used1/4" thick angle
instead.

         The first picture shows (very poorly) the mount from the front of
the engine. If you were looking from the top instead, the mount would look
like a "Z". The web of the Z is slightly to the rear of the bolts attaching
the flange of the mount to the engine. The other flange bolts to the plate
of the engine stand.

         The second picture shows the extra mount I put in the rear to take
out some of the flex. It is a scrap of steel angle and one of the standard
arms that come with the engine stand. This rear mount, (along with a
section of angle bolted to the flywheel,) worked quite effectively as a
flywheel stop when I was replacing the thermal pellet. It took about 800
ft-lbs to loosen the eccentric shaft pulley bolt. The mount also held onto
the engine quite securely when I was twisting the pulley nut with a 7 foot
cheater pipe.

         There are three bolt holes on the side of the RX-8 engine in a
similar location to the ones on the RX-7 engine. One of them is a bit
smaller on the RX-8. I picked up all three with my engine stand mount.

         If you had some really long bolts to thread into the engine, you
might be able to simply use the stock arms that came with the engine stand.

         Bill Dube'