Quote:
Originally Posted by Gary M
I had a 2 cylinder Universal diesel in a boat I bought new in 88. That model had a heat exchanger so some of them did, must have been an option.
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The 5411 was raw water cooled. The 5416 and larger were fresh water cooled with heat exchangers. My speculation that it's a 5411 is based on that Catalina put the 5411 in the Cat 30 for a number of years. Unlikely they would put a larger engine in a smaller boat.