So I have the Judge Ito porting templates (aggressive streetport) and I'm about to finish op 2 sets of irons with it (one set of used irons, one set brand new)

the porting goes quite wel but I'm a bit in the middle about how to finish up/clean up the port opening and closing edges.

The original ports have been CNC machined and the angle of the iron surface to port is about 90° with a cut-edge.

I can imagine this is quite hard on the side seal, eventhough the side seal still has a large area which is supported.

So the question is... is it smart to try and get the extended port edges a sharp as possible or better to smooth it a little for easier transistion of the side seal from port opening to iron surface

 

look up re amamiya. or rx-7 mag.

 

Do you have a link please?

I'm in europe and don't have any access to RX-7 specialized magazines

 

Why not ask JudgeIto himself?
post your question in the porting section on Nopistons and he usually replies