Cylinder Bore

Some blocks have a really soft bore compared to others. Or should I say that some blocks have harder iron in the bore? Some bores have a tendency to scuff worse than others, all else being equal.


Cylinders are made of cast iron suposedly. The fact is there is a lot of recycled metal being used and they mix it with the cast iron. Too much steel content and you will have problems. As long as it can sit in a swamp and pump water all day it's good enough.