Is there one advantage over ther other? How about both top and bottom at the same time? I'm designing the jig right now,so I thought I would ask. What diameter should the holes be? If nobody knows,I'll just wing it "Joe style". It looks like they will definitely give/promote a larger air/fuel charge to enter the cylinder. I've already started on my "cut away" cylinder and was able to get 3/8" holes no problem.
This jig will make boysen ports fast and easy. Probably about a minute each total time,which includes time to set the jig. I wonder how much extra power these will create?. I also wonder how well they will work in conjunction with a piston boost port. Hmmmm....
This jig will make boysen ports fast and easy. Probably about a minute each total time,which includes time to set the jig. I wonder how much extra power these will create?. I also wonder how well they will work in conjunction with a piston boost port. Hmmmm....