First of all I'm not a machinist, or an engine builder, so here's my ?'s

Do some machine operations or equipment operate from the crankshaft centerline and some from the camshaft centerline?

I've heard there are opinions about if one is better than the other. But then again I'm not sure what I'm asking or if there is such a thing.



Another thing I wonder about when going through and old engine such as ours is, I see some guys use all different kinds of methods to clean the rust and corrosion out of the water jackets. ie, immersion in chemicals, acid, molasses, sonic vibration or newer more hi-tech things. How important is this? I guess I am to anal about it but it seems like it would make a better final product. I also realize one can go overboard on some things too, and it gets down to how much time and money you want to spend.

       A  L  A  N   F  R  A  K  E  S   ~  Tulsa, OK