After rebuilding my engine I blew the valve timing and tried to start the engine.
I cranked and cranked with my valve timing off. When I realized what I had done, I got that sinking feeling that I just ruined a fresh rebuild.
So after taking the engine back out of the car, dumping one head and finding the valves had not hit the pistons I performed a leak down test on every cylinder. Getting the valves to seal properly required me to turn the engine a few degrees counter clockwise
around top dead center. There was a huge difference over couple of degrees in sealing or not sealing the valves. Can anyone tell me what the downside of rolling the engine counterclockwise is? I've never understood what breaks if that is done.