Re: open or closed
Open (or standard cooling) systems suck raw water out of whatever you are boating in, circulates through the engine & Manifolds & is expelled through the exhaust.....
In a closed cooling system, the engine block and sometimes the exhaust manifolds are part of a closed loop, much like an auto cooling sysem.....
Heat is dissapted by running the closed loop & raw water through the heat exchanger......
The raw water is expelled through the risers.....
