doug hess
02-17-2002, 11:32 AM
Does anyone know where I can get the schematic/diagram for the engine block only fresh water cooling setup for a 1991 Merc 5.7 L / GM 350. The Merc manuals have diagrams for either full block/manifold cooling or seawater
From the main thermostat housing both those systems use 4 hoses to the manifolds and risers which is also connected to engine block cooling. It is not obvious how the two systems are separated in a split system.
I would also be interested in comments on using Merc Alpha 1 I/O water pump for cooling water on block only system. Some claim it can be done, others it is marginal and some it is inadaquate and separate pump must be used.
Doug
From the main thermostat housing both those systems use 4 hoses to the manifolds and risers which is also connected to engine block cooling. It is not obvious how the two systems are separated in a split system.
I would also be interested in comments on using Merc Alpha 1 I/O water pump for cooling water on block only system. Some claim it can be done, others it is marginal and some it is inadaquate and separate pump must be used.
Doug