In order to make the 194 head flow,you do not just cut the chamber wall on the side. (where the valve is closest to the chamber)
You need to relieve/unshroud the chamber in other areas,it's not just one spot.
There is more involed & it's not hard to do.
There is nothing wrong w/the 194 head,you just need a person that knows how to work them properly. Mike Kirby,Larry AKA Twisted6 & others.
It is a viable option for more compression when you do not want to tear apart the bottom end & install higher compression pistons.
It's a simple cyl head swap & will get you about one full point of compression increase & can get more if you shave/mill the head.
MBHD
