i got this one from the power up and the cooling head is diff
Last edited by jwc0108; 03-26-2013 at 08:31 PM.
The design was changed a few years back. The newer design (bottom pic) has less of a tendency to break/lose cooling fins.
No slipper/tall gearing/power = broken parts.
Looks to me the top cooling head would cooling better.
Guess I didn't realize I've been rebuilding the engine so long