Then you might think about ways to get the coolant as hot as possible in the reserator.
For instance, maybe running through your blocks, to the reserator and then to the heater core - and it might be worth at least trying a tube internal to the res to put the hot water at the top and draw cooler at the bottom.
Beats me if any of this would help, but IMHO it's at least worth thinking about...
|