Archie Frangoudis wrote:

Yes, Tracy you are on the right track.
We performed a similar operation on certain cylinder
head intake ports many years back to promote
turbulence. It does not take much, some ports
responded by simply coarse blasting in certain areas.
We also found that the same effect could be achieved
by prick punching. Unfortunately, I know of no formula
for this other than flowbench and dyno.
Archie

The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org