Before you make the purchase I suggest you try and fab one up with a cheap tarp or two to see if there is enough heat coming off your engine to provide any warmth for you.
I had a sheet of EPDM roofing rubber I used to wrap around the engine of my British Nuffield 465 which had 65 hp.
There was little heat coming off it until the weather started to get warm enough that you did not need it then the engine would start to overheat.
By enclosing the engine area of the tractor, it got very breezy in the driver's seat as now all the air from the cooling fan was directed back towards the drivers seat. There was no heat coming off the radiator.
Eventually I wrapped the rubber over the rad opening to cut down the breeze.
In WW2 the Americans built a tank destroyer called the Hellicat. It used an aircraft engine with a big fan to move lots of air over the cylinders to keep it cool. I listened to an interview with an old veteran who said they almost froze to death in the tank because of the air moving inside the tank with the cooling fan sucking it in.
Diesel engines do not throttle the intake air like a gas engine does so there is always a large volume of cold outside air being sucked into the cylinders. The more throttle you give the engine the more fuel is injected however, the faster the engine turns the more cold air is inhaled, cooling the engine more.
Naturally you have to be careful not to go too close to the exhaust.
You likely have already considered the soft cabs but I will provide a link just in case.
Kubota L2800 Tractor Cab, Kubota L2800 Cab Enclosure, Kubota L2800 Cab, Kubota L2800 Weather Break, Kubota L2800 Tractor Cabs, Kubota L2800 Cab Enclosures and Kubota L2800 Cabs made with high quality features and materials
My friend who has a
B7100 has a cab with no heat at all and finds it tolerable in our cold Canadian climate.
Dave
M7040
