Bad news today:
after putting a new diaphragm into the injector pump, and feeling pretty good about that, I suddenly focused on the side of the engine in behind and noticed a massive crack in the oil cooler cover plate, an aluminum jacket that runs the length of the engine block. Friggin' hell!! After taking the injector pump off I discovered a crack that ran for 14"







:
I guess that would be one of the consequences of the p.o. not using anti-freeze, as the inner part of the oil cooler cover was quite eroded in places.
Well, learning lots, the hard way...I'm hoping it can be repaired at a local welding shop, and am checking into getting another one, new or used, from Australia.
The sandblaster guy couldn't make it today and has rescheduled for Saturday.