Quote:
You will find there are 2 types of fresh water cooling. 1 is called a 1/2 system, that uses raw water to cool manifolds and rizers . 2nd type cools only the rizers with raw water.
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I am not sure that is entirely correct.
There is a raw water system that cools the entire drive drain with the water that the boat is in.
One system (lets call it the 1/2)cools the engine block and intake manifold with a closed (fresh) water system. Raw water then cool upper and lower exhaust and risers.
The other type of system like Crusaders and Merc Sea Core uses a closed (fresh water) to cool engine and all risers.
However I agree don't cheap out...
