Hi, just pulled off my inlet manifold and noticed the size of my ports are these standard, the port runs right to the gasket line.... Aslo has an X marked next to both center ports..????
Yeah they look standard mate. If they'd had work done ya normally see the marks in the ports, but looks like there's just standard casting marks there.
Here's a pic of a port on one of our sets of heads. This is a YT head (carby) which has been port matched (or just opened up to the gasket). Ya can see the marks I'm talking about.
Ok cool, do you know why the ports on a vn head are smaller than a vs s2 and if its going to slow down some flow, the nv heads i have to fit my vs have bigger valves fitted too and bigger cc runners, these are what i plan to fit.