Thanks very much! Now I know.
I asked a lot of questions re the pump we got. It is likely a mix of bits. The pump says is a 90 EH (9mm plunger) which likely came off a HD 11 by the speeds on the spec plate. After time on the books of these, it seems Allis chopped and changed 9and 10mm plungers and 28 and 32 degree timing. I can't actually say what the head we're using is , as it has the middle 2 numbers mangled, and I'm not going to strip it again just to measure the plunger. The ADS -516 (supercharged) was 10mm and 28 degrees.
We got the pump on a never-used short motor out of a liquidation sale, and found it was missing the o-ring under the head and was timed one tooth out (which meant the plunger was hydraulic locking before the distributor slot opened - it started that way, probably from the jolt, but I figure not good for things in the long term). And had a burr on the spill valve shaft that caused it to die when it came back to idle - that took our diesel apprentice son about a day to track down. The lock wires were nice and shiny though!
Yes, the 516 pump is on the left, and I'll just keep using ether for now. One contact has connections that can import those IH pumps with adapter kits for Allis. (I'm in Australia.)
Are parts still available for these 100's?
Both the heads we have have been rebuilt - can they be done again? The old one had the injectors wound well down on pressure and won't crack them at correct settings.
But if I know the answers I might be able to do better along the way.
Thanks again
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