I'm still thinking at least some of the timing parts have been replaced. I found a good sized chunk of chain guide in the pan that will only fit one spot on one guide. That piece is not missing in my engine.
I did pressurize the oil system with air and oil and didn't see or hear anything coming out of or around the tensioners. I definitely checked after my last post.
As far as I can tell there isn't a visible gasket in there. I looked on rockauto.com and see two styles of tensioner. A plastic one with a molded o ring style gasket and a cast iron with a smooth back which I assume seals metal to metal or maybe a dab of rtv. I've got the cast iron. I can definitely see where that plastic one could cause some problems.
My theory is it had issues before and the chains, guides, and/or tensioners were replaced. The damage was done to the cams and they finally wore to the point it couldn't make oil pressure with hot oil at idle.
Just curious....what would you say would be a "normal" oil pressure at hot idle for this engine?
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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