318 head porting for the average joe
At what point can I justify enlarging that bulge area? They are about .750 at the widest point. I also thought about just grinding until I broke though and sleeving them with a brass tube.
Are there gains to be had enlarging this pinch area with just mild bowl work?
Hi DK,
I would grind the port inlet at an angle to meet up with thinnest point, inside the port entrance.
To get the port as wide as poss. you will need to buy or make an 'E' gauge.
I made my own with some 1/4 inch steel rod and a hobby welder.
The hardest part was making a swivel joint and I cut down an airline fitting with a 1/4 bore for this.
At what point can I justify enlarging that bulge area? They are about .750 at the widest point. I also thought about just grinding until I broke though and sleeving them with a brass tube.
Are there gains to be had enlarging this pinch area with just mild bowl work?
