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Old 02-16-2019, 01:13 PM   #108
sunchaser
Guru
 
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,186
Peter
Your comments on the coolant pump leaks on the JD 6090 I find interesting. It has been an issue on some 6068s as well. Did Lugger have a different marinization design for the coolant pump in the "old days?"

One of the things I really like about our Perkins Sabre 225s/Cat 3056s is the great access to all cooling system components. When one of our coolant pumps started dripping I did a little research. The seal is a ceramic/carbon design and can pick up a small speck of dirt that causes an uneven spin and eventual cracking. Dirty coolant was suspected - that suggests on a keel cooled large liquid capacity setup maybe an inline coolant filter would be helpful. The drip was slight but worrisome so the coolant pump was changed out, quite easily I might add.

So if looking for any suggestions, maybe a coolant filter would be in order for your wet exhaust design. I've seen them on Scania non marine engines, whether OEM of after market I don't know.
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