does anyone know the specs on the os cz engines, preferably .12 please, thanks

What particular specs do you want? Rated at .31 hp. I have one on a Herr Pitts. Had to put a Fugi carb airbleed carb on it to get it to run right as there was no idle mix on the original carb. It's a little power house but you shouldn't have to change things to get it that way.

thanks, but I should have been a little bit clearer, the os .12 cz car/truck engine

Joe: I have the specs on the car motors too. There are three different car versions. CZ1, CZ2 and CZ R. HP rating only shows for CZ R which is .43 HP at 27000 rpm.

thanks, thought it would have more hp, oh well