Morton M5

[Admiral_dk]

Just beautiful and a very nice description on how you did it - I'm enjoying to see this again - so thank you George 

[gbritnell]

The heads probably took the most time for an individual part, not counting there was 5 of them. I started with round stock and turned the combustion chamber counterbore and the fins. I drilled a hole to the depth of the combustion chamber then made a conical tool from drill rod to cut the shape.

[gbritnell]

The head was laid out with center lines then set up in the mill to put the valve pockets in. I calculated the distance needed in CAD, picked up the center lines then drilled and reamed for the valve guides and pockets.

[gbritnell]

The head was securely screwed onto a threaded mandrel then put into the mill vise. The head was tilted to the required angle and initial milling started for the various shapes and fins. I blued up the boss shape around the valve guide hole and stepped the radius off.

[gbritnell]

The next step was to put the top fins onto the head. This was accomplished with a slittng saw of the proper thickness.

[gbritnell]

Some final pictures of the head with all the holes drilled and tapped. The heads will have steel valve seats pressed in and bronze guides also pressed in place.