Rolling IIIIIIIIIs.
To update this conversation, the new fan clutch did make a difference and the engine generally runs cooler but on miles long hills, it still begins to overheat. I will be installing a Mishimoto 185 degree thermostat to get the radiator started on cooling 7 degrees earlier. Opinions say it may or may not help. Next, my wallet is taking one for the team on this, I'm swapping out the new fan clutch for the severe duty snowplow fan clutch which engages harder all the time driving more air through the condensor, trans cooler, power steering cooler, intercooler, and finally the radiator. The other biggie is a new AFE 3 core radiator with about 20% more coolant capacity. The cores are 2.25" wide, whereas the Mishimoto is 2 1" core, 1.88" wide. Lastly, I'm going to reroute my IPR water filter return line from under the degass bottle, to how several other filter vendors do their return line. They route the return to a TEE splitting into the hose going between the top of the radiator, and the degas bottle barb fittings. The current setup returns coolant to the engine side of the coolant system. The change will circulate coolant into the radiator side of the coolant system. This way will increase coolant flow through the radiator bypassing the thermostat. That will increase my cooling by a yet to be determined amount. While disposing of excess heat from this engine has been an issue of concern, I think the new parts will easily resolve any remaining issues. The end goal is to be able to drive up a miles long hill with the TC and who knows if I'll get a cargo trailer at some point for longer duration trips. We shall see how this plays out when all the new parts and modifications are completed. I'll tell you though, this truck drives like a dream, though there has been debate over the 6 liter and reliability, keep in mind, there has been a Lot of research done by many very capable mechanical enthusiasts and they have figured the problems out creating a lot of products that do wonders to make this a highly desirable engine. It's going to cost far less to turn this into a great and reliable truck than to buy new or newer. Plus, no DEF or regen to mess with. It's the last of the straight forward diesels.
