Well it finally quit raining in California.
I was able to retest my Mac conversion.

16x8 prop at 7300 rpm with no power to the glow.

This was obtained with 1 part 20/20 glow fuel and 2 parts gas.
After 5 minutes of WOT the engine temp was 200 degrees.

Let me also state that the compression of this engine is not what it should be.
That's probably why the extra nitro.

So now that everything is looking so good I'll pick up a new set of rings from Frank Bowman.
And then I'll finally know if it's a 28 or 32cc engine