gene laid it out pretty well. The way things were sized for capacity . . . . the thermosiphon was a pretty efficient system and a warm hose at top and cool hose at the bottom would indicate everything is working as it should.
My SuperC, with water pump and thermostat, is also slow to warm up -- it's the nature of that 113/123 motor. Mine was always a gas (i.e., not a dual fuel) motorbut was delivered in upstate NY with radiator shutters all the same. I use them all the time to warm the tractor up even in warm or moderate weather.
I've been out to mow with a sickle bar on a warm day with the shuters open and could run as much as a half-hour or more before the needle on the gauge would ever get up into the RUN range. My answer, because my usual runs are a lot shorter and I don't like shutting down an engine before it's had a chance to warm up, is to close the shutters as part of my start-up routine. The flip side is, once she is warmed up well, to remember to open them back up.
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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