On Saturday, April 5, 2008 at 8:27:13 AM UTC-7, Jim Rojas wrote:
I have this old fresh water cooled 170HP Mercruiser inboard, that runs
great.

I replaced the impeller, and still no water circulates into the heat
exchanger. I looked for clogs, with no luck. I removed the old stator
charging circuit, which I had replaced with a standard alternator this
past summer.

So my question is can I install a radiator with an electric fan to
eliminate the salt water altogether? If so, any tips?

Thank you

Jim Rojas

internal water systems are good as far as water cooling. although i have attempted that with results good and bad. I have found that allowing the original system to be connected to the radiator is by far the best result with my experience. i since have installed a couple ball valves inline to restrict some flow from one to the other, for pressure reasons.