unusual pushrod tops
I think this engine, partially dismantled, was pictured on this site last August or thereabouts. I don't recall any other info about it and had assumed it to be OHC. Looking again I see that I got that wrong, and it has its rockers high above the head. While this may allow higher lift it would seem to lose the advantage of the upper vale guide as it seems the rocker must work on the end of the valve.
Can anyone find and link to the last photo as I can't manage.
Cheers, Ian