I know most of you will say have it PnP by an expert. But i dont have $900. So, if you had to PnP a B16 head because your life depended on it how would you do it? What would you port and polish and what will you leave untouched? For those whos done it, a step by step DIY porting will be very helpful.

Id also be very grateful if i can see some close up shots0 of ported heads by pros. Maybe i can TRY to imitate.

 

some good info and porting tips can be found here:

http://www.theoldone.com/articles/b16a%5Fhead/

take your time and read up as much as you can not only from the endyn website but others as well. you dont want to mess up that head.

 

Thats good stuff man. Although i have a question, what is meant by this:

"Take your time when porting, never get in a hurry and don't destroy the curves of the short turn radiuses. Contrary to what might "seem" to be a more direct path for the flow, you have to maintain large radiuses, or the flow can't negotiate the turns."

Short and large turn radiuses?

 

short turn radius is the short curve down onto the valve (port floor?)

large turn is the roof of the port which curves ontop of the valve guide onto the valve.

(i think)

 

If you have to do this yourself, think about this...

Cleaning up the ports a bit is not bad, just be careful what you cut. You can do a little cutting to match the openings in the head with the openings in each manifold.

Serious cutting (reshaping) the ports is probably not something you want to do. What 'looks' like a better shape for flow, isn't always better. So you might just make it worse.