Just finished breaking in the non cdi 185 DZ on an engine stand, & all I can say is "WOW". This thing is an animal, with scary power, especially on transition from mid to top end.

On my last two tanks, I put on a 20x10.5 PN prop - the same one I normally use on my 175. With 30% heli fuel, the 175 gets about 7,100 with header & pipe, the 185 get close to 7,800 without any restriction. However, the 185 power delivery is smoother than the 175. Since the 175 with the 20" prop already have more than enough reserve power, I have the feeling the 20.5x10 PN is probably more suitable for the 185. Hopefully, I will have time next week to fly with the new engine.

More to follow.

Adrian