I have been looking at a lot of port jobs and i am wondering what kind of a difference does having your leading edge of the port rounded or square at the bottom affect. I used pineapple racing templates and they are a very sharp edge. I will post some pics up to make my question more clear.

 

Ok so i couldnt get my pics on but does anyone know what i am saying. Is it better to leave a flat edge or round it and blend into your port???

 

Here's an endorsement for the new Rotary Book:
http://www.amazon.com/gp/product/1557885494

I've only read part of it, but I believe it answers your question, and much more.

It would be $15.00 well spent

 

Bevel the closing edge.

Scroll down to the bottom pics to see what I mean:

http://irperformance.com/?page_id=20

 

Finally got the camera working i am talkin about blending the first edge the rotor hits to make it more rounded, but keeping the port size the same.