Each machine style, or machinist, has their own bolt mounting system for ridged clamping of the cylinder head to the rollover fixture. Our Winona machine has 2 universal T-handles with 7/16″ threaded rod and a fast mount bar it threads into. We have a variety of spacer tubes we can use to find the “sweet spot” where the quill or tool driver won’t run into anything when the head is flipped, to either side, for machining. Having a good variety of other bolt lengths on hand to mount odd cylinder heads with can be a real time saver.
Mike Segar
Segars Engine Building
Bloomington, MN