Randy:

I have heard from others about good experiences with these engines. Sorry, my memory does not show any bush on the crank.

I never broke a crank in any K&B engine, but I (and others) had many Fox crank failures. Were you thinking about Fox maybe?

When I was based at Sheppard AFB, near Wichita Falls, Texas, we'd blow $10 on a gallon of fuel and a Red Head 35. Strap the engine on the same old plane, fly the weekend, next week more fuel and another Mac 35. Sometimes, I'll admit, the T/McCoy would outlast the first gallon.

"Hey Bill, did you get your stuff for this weekend?"

"Well, I got the engine but they were out of fuel."

Bill.