I managed to get home for a day, but since I don't have my burrs in yet I decided to start with the comvbstion chamber.
I sanded down the machinist ridge around the valve seats, and blended them into the chamber. I also tried to smooth out the other ridges in the chamber. I definitely increased the chamber size a tiny bit, but I will mill the head a little more to compensate. The amount of area opened up around the valve at lower lift and the smoother airflow path should make a good difference.
Thise was all by hand, no power tools. Finished with 1500 grit for now. I will wait on the final polish until i get the reat of the head done.
The pictures don't do this justice. A lot more was removed than it seems. The first picture shows the ridge around the exhaust valve still in place for comparison.
Last edited by Megadan; 01-13-2018 at 08:21 PM.
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