Ideally you want the the hoses from the donor/supply vehicle plumbed in this way:
1/ One hose connected to the suction side of the water pump to allow for circulation
2/ Other hose plumbed into the top of the cylinder head or underneath the thermostat housing to obtain the most amount of heat from the donor/supply engine
Installing a "Y" in each of the heater core circuit hoses will work providing there is a coolant shut-off valve in the circuit for the heater core AND it is shut off when you're trying to heat the cold engine, otherwise most of the coolant will take the path of least resistance and circulate through the heater core instead of the cold engine.........
The system works well but it can be hard on the donor/supply engine since the ice cold coolant from the cold engine can drastically reduce the operating temp. of the donor/supply engine...................
Using the hyd. couplers is a given for ease of connection................
That type of system was used for many years on the equipment in our area but has since been abandoned in favour of diesel fired heaters produced by companies such as Webasto, Pro - Heat, etc.............
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Today's Featured Article - Tractor Profile: Allis-Chalmers WD45 (Gas Version) - by Staff. Beginning production in 1953, the WD45 had the same general look as the WD tractor which was produced earlier - but was much more powerful. This was due to the new 4-cylinder "Power Crater" gasoline engine with a 4 x 4-1/2 inch bore and stroke. Some people feel this was one of the most significant tractors offered by Allis-Chalmers in those days. Nothing in its weight or power class could match its performance. In 1954 they began offering the WD45 with the new "Snap-Coupler&quo
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