[C320-list] Another Yammer 27 question

[Warren Updike]

Ditto, congrats on your new boat.  
Of course you should direct such questions to a Yanmar qualified technician
and your Yanmar manual.  That said, common wisdom is diesels run best at
about 80% of max. rpm and that may be different for different engines. For
mine, that equates to 2800.  There should be a "power curve" associated with
your engine that will show fuel consumption vs. rpm.  From that, you can
decide what would be your preferred cruising rpm.  
Diesels like to be run hard.  Extended operation at lower rpm's cause
insufficient fuel combustion, carbon build-up in the engine and mixing
elbow, and smoky exhaust.  
It might be a good idea to consider calibrating your tachometer.  The C320
tool loaner has (or did have) an optical tachometer for that purpose.
Good luck, pay your dues and check this list often.

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"

-----Original Message-----
From: Gene Helfman [mailto:genehelfman at gmail.com] 
Sent: Monday, August 27, 2012 8:31 PM
To: C320-List at catalina320.com
Subject: Re: [C320-list] Another Yammer 27 question

 We're happy as the new owners of *Satori* (#398), having just finished a 5
day familiarization cruise around the San Juan Islands.  Our summer winds
are flukey, which means a lot of motoring.  The previous owner said 2500 RPM
was a good cruising speed.  Is this what most people use for long passages?

gene and judy
--
Gene Helfman, Professor Emeritus
Odum School of Ecology, University of Georgia PERMANENT address:
    498 Shoreland Dr., Lopez Is., WA 98261
    (360) 468-2136
    genehelfman at gmail.com

"Give a man a fish and he'll eat for a day, Teach a man to fish and he'll
deplete the
      oceans."

The Book of Bob, Ironies 24:7