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Old 06-10-2017, 05:54 AM   #14
sunchaser
Guru
 
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,185
Quote:
Originally Posted by lwaugaman View Post
I have a pair of 6-cyl Yanmar turbo diesels. At 1000 rpm's we cruise comfortably at 10 kts @ 10gal/hr (the holy grail of cruising). At this rpm our turbos are idle.

Question: I have heard that running at low rpm's for extended periods of time without engaging the turbos can have adverse effects.

If this is true, is there an optimum protocol (e.g. some time at 1500, 2000, 2500, etc.)?

Thanks,

Lou
A fellow TF member, Codger, has a 42' OA with twin Yanmars. He is an experienced boater and can provide some information and/or steer you to the right people to get a definitive answer. He too is located in San Diego.
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