Engine Question

[GSJim69]

Is it OK to turn an engine counterclockwise?
If not why?
I think I have read that you shouldn't somewhere. I am curious why.

Thanks

[tkent02]

You shouldn't, it has to do with the cam chain tensioner not being designed for it.

But if you did turn it backwards it probably didn't hurt anything.

[rapidray]

I turn them backwards all the time during assembly & cam degreeing. Never been an issue. Ray.

[kta]

You won't do any damage to an engine turning it in the reverse direction. I suppose you could prematurely wear the pads on a points based ignition if you sat there turning and turning and turning, or engage the starter clutch.