Warming cold motors by transferring liquid from hot motors........

I had this set up when I pulled a tanker for keeping product in tanker warm. It was plumbed as you described. It ran through heat sinks under the tank. What you described would probably work well.

Dave

 

We used to do this with quick connects on equipment in the bush up North (25-40 below tempretures.)

 

When I worked in the oilpatch in the frozen north we had a similar setup on our twin-pump cementers. They had two Detroit 8V92s; one powering the truck for driving and then used for one of the pumps and hydraulics when stationary, and a second, "deck engine", that powered the other pump and back-up hydraulics (hardly anybody does it this way anymore, most current twin-pump units are now trailers). We had a small manifold to circulate coolant beween the two engines and to seperate them when both running, or in the event of a leak (unless it was really cold, say below -30, then we would just start the deck engine before leaving the shop).

So long as you connect it as described, it will act as a really large heater core and everything should be alright.

 

Just heat the intake manifold with propane torch before starting.