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Old 04-17-2021, 07:38 AM   #74
Bored&Stroked
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Join Date: Jan 2011
Location: Central Ohio
Posts: 5,013
Default Re: Rebuilding an Ardun OHV 1954 - 1956

RE: Injectors:

The original pump for the Hilborn Ardun injector was a vane type that Stu stopped making or servicing many years ago. It is extremely hard to find one in good working condition, so most folks who happen to have one of these injectors will use a modern pump. Here is what the original pump looked like - you can see the pressure relief valve with the tie wire on it. Modern pumps don't have pressure relief valves in the pump - they are part of the line/plumbing instead (and there are many ways they are implemented) - depending on the injector style, usage, fuel type, etc..

Here is one of the early Ardun injector pumps I have:

IMG_9092.jpg

IMG_9093.jpg

OriginalCatalogPics-1963.jpg
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