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John H.[_5_] John H.[_5_] is offline
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First recorded activity by BoatBanter: Jul 2008
Posts: 8,663
Default Mercruiser 170 Problems

On Sun, 22 Jul 2018 12:21:56 -0700 (PDT), wrote:

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.


That's what one might call a 'delayed response'.