Re: Evinrude underwater - can it be fixed?
There are exceptions to any rule.
In 2000 I bought a Yammy 130 (from brokeboats) that had been under salt water long enough to grow barnacles. It had been dropped during a failed attempt to steal it. It had been out of the water for at least a month before I picked it up.
I flushed it with soapy, hot water, rinsed, then kerosene. I put a wrench on the flywheel nut and slowly pulled it through about 10 turns, then spun it with the starter for about 5 minutes in 15 second bursts. Then I tested compression and got 145 on all cylinders.
Replaced the carbs. Inspected the starter and replaced it. Lots of corrosion, even though it still ran.
Flushed and relubed gearcase and replaced a fairly brittle impeller.
Put it in the tank and it fired right up. Put it on a prop dyno and got 135HP@5500rpm.
Sold the engine to a guy who put about 100 hours on it before it threw a rod. He knew its history and got it cheap, so he wasn't bugged about it.
Did I restore it to use? Yes, I think so. Was the rod failure related to its bath? I'd say better than a 50% chance.
There you go. It can be done if you accept the risk that it will, in time, fail.
Good luck.
