Those injection nozzles were pretty crude on those M diesels. The valve in the nozzle can be taken apart and lapped to get a decent sealing surface so they don't leak and the actual spray pattern is the hole in the orfice plate which is seperate. I would doubt that they cannot be put back into service with no noticable loss of performance. They didn't go to a more precision style until the open nozzle in the 450 diesel and I cannot honestly say they ran any better . A precup engine does a really good job of breaking up that fuel once it gets good turbulence when warmed up and up to speed. I used to have a little spacer gauge to get a pretty close opening pressure setting as it is adjustable with a double lock nut on the stem of the nozzle. I think you need to get a hold of an old guy to clean and test them who is familiar with that style nozzle. None around here anymore in the diesel repair shops that is for sure. Got to have the feel for them.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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