Some progress.
Block modifications done and back from getting almost every machined surface re-machined- align bored, decks/pan rail/front face squared and trued, bores finish-honed.
Almost finished creating a dedicated scavenge cavity to handle all top-end oil return.
Moldex has my down-payment to begin creating a billet crank- hit them at a good time, as they expect about an 8-week timeframe.
Working with Diamond to start on billet pistons.
A couple of billet pieces made for the front face-
> front main seal plate, as there won't be any timing cover- cam belt drive will be "open air".
> multi-function plate to anchor adjustable belt idlers and to route coolant from the cylinder bank up to the head.
Began laying out the belt drive for the DOHC, and so far it appears that I'm extremely lucky (dumb luck?).
> Using 8mm-pitch, the largest flanged sprockets to fit the cam center distance (about .2" to spare) are 50 tooth (even number necessary for half-speed cam drive).
> In 36mm wide, both 50 and 25 tooth sprockets are available-stock items- hurrah!
> My geometric calculation shows I need a belt of minimum pitch length 1,356.9 mm- a 30mm by 1,360mm belt is a stock item, which is well within my idler adjustment range.
> And the final stroke of luck- building 7-bolt hubs on the cam sprockets will provide fully-indexable cam positioning in one-degree increments.
Wow- must be my lucky day!