Yep, I've run others at 34 degrees with no problem, however those engines didn't have a very high CR. The 200Ti is 13.7:1, thought I would start low and advance the timing 1 degree at a time until the engine no longer sees gains, then back off 1 degree.

I'm running 15% synth/2.5% castor. I could use a lower oil content, I know, but I like to run the same fuel in all my methanol engines, 4 stroke and 2 stroke/.55 to 2.2 cu in.