so I got all but the 15 minute varied throttle break-in done today. This is a sweet little running motor. A few observations;
1. the muffler does not seal and is only slightly better than an open cylinder as far as oil flying everywhere.
2. On my test stand I found I need a pressure tap with a solid tank as it was choking on the final leg of static running. When I kept pressure in the tank it picked up and ran well again.
3. This thing spews alot of oil. Granted I was very rich on the first run, and slightly less rich on the second.
4. These little motors can use a heck of a lot of fuel if they are really rich. about 7-7.25 ozs in a twenty minute run, about 6-6.5 in the second run, and when it was set the way I would fly it it used about 4.5ozs in 20 minutes.
5. with an APC 6x3 sport prop I was getting about 14500-14600 rpm's WOT on the last run. I will research to see if that is in the ballpark or not. Guessing it should be up there a bit more, and it may pick up a few RPM's as it loosens up more.

Has anyone done anything with the muffler to get it to seal up a bit better or am I doing something incorrect? The index tab is lined up and the screw holding the two halves together is tight. Maybe expecting too much.

Still looking for a radial mount for one.