how do i porting my self? where can i get the shape for porting?
 

how do i porting my self? where can i get the shape for porting?
if i do my self how to porting? there is a design and people draw arond port and start grind,
where can i get that shape?

You can buy the template at racing beat , mazdatrix , pineapple racing
But you should at least watch some videos to get an idea of what u need to do and get some
Old housings so u can practice on.

Most of the vendors sell porting templates and the template you choose will depend on your goals for the engine. That gives you the shape of the port, but much of the work in porting is working on the transition between the port and runner.

If you'd like to see some porting, I show a fair amount in this video:


It's not really a typical port job but gives you the idea of what's involved.