I just finished moving some snow with the rear blower and thought I'd post some info and pics from today regarding the same:
Outside temp was +10° F today.
All three of my winterfront covers were on (front + two sides)
Tractor's temp gauge held steady at 4 bars displayed through the hour's snow blowing.
I tywrapped an accurate thermometer inside the cab at head height on the side framework.
(I didn't expect the cabin heat to exceed the range, but it's the only thermometer i could find.)
Here's some pics of the setup, tractor's display and thermometer showing cabin's inside temp.
Select for expanded view:
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As you can see, it was way too warm in the cab for comfort with the heater's blower speed on high. But this shows that even 3/8" heater hose hooked up to the water pump bypass circuit can supply sufficient coolant and heat to the cab heater. And the whole cab was at that temperature as you can see the heat probe was well away from the blower output and even located next to the window. The thermometer reads +90° F. I didn't have the heat gun to see what the heater core temp was. But from before, at 4 bars displayed on the gauge it was in that 170° F range. The engine oil temp would've been somewhere in the 190°/195°F range. The gauge never displayed 5 bars.
Normally, I'd either turn the heater off when comfortable, or cycle it to maintain a comfortable temp. Or adjust the covers with the cab heater going if the coolant temp started to rise above 4 to 5 bars displayed. That doesn't happen suddenly so there's plenty of time for adjustments.
The homemade cab that I install for winter is also quite roomy. the heater keeps it as toasty as you'd like. No snow sticking to the windows. It melts and runs straight down so no wipers needed.
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Plenty of room for the jacket and gloves stuffed behind the seat!!