Bad idea. That adds pressure to the radiator inlet side, and removes some
of the hot water needed to heat the cool side of the block. The outlet in the
block can be used to supply a heater core, if cabin heat is needed. The outlet
of the core if used, would be plumbed to the outlet tank of the radiator near
the return or suction side outlet to the pump. A simple car type cable operated
valve can be used to control water flow to the core or cut it off to zero
flow.
Lynn E. Hanover
In a message dated 10/27/2012 10:58:30 A.M. Eastern Daylight Time,
randolph7714@comcast.net writes:
My radiator has in inlet top and an outlet bottom and on
opposite side. The water pump outlet goes to the top radiator and I welded an
extra 5/8 hose connector there to receive hot water from what you describe as
the midpoint of the flow path. Good idea or bad?
Thanks