[C320-list] Yanmar 3Gm30 typical fuel consumption?

[jbrown5093 at yahoo.com]

While on the fuel subject-Catalina Direct says that some 320's (after 1999) had a 28 gallon tank installed. Is that correct? Was it an option? 

Jim Brown

Sent from my iPad

> On Jun 6, 2016, at 12:32 PM, Greg Flanagan <greg.flanagan at shaw.ca> wrote:
> 
> Exactly what I get Warren. And I measure my fuel level from the hours run. Its more reliable than the fuel gauge.
> 
> 
> Greg 
> Hoop Dancer #1076
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Rod Boer
> Sent: June 6, 2016 9:17 AM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Yanmar 3Gm30 typical fuel consumption?
> 
> Warren,
> 
> We also cruise at 2800 RPM and 0.5 gallons per hour is what estimate.  
> 
> Rod Boer
> Odyssey, #688
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Warren Updike
> Sent: Sunday, June 05, 2016 3:36 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Yanmar 3Gm30 typical fuel consumption?
> 
> I averaged fuel consumption over a 2 yr period and came up with 0.5gal/hr for the Perkins M30, 27HP. We usually try to run at about 26-2800rpm as that is the optimum rpm for this engine. That is the point at which fuel efficiency is maximized according to the Perkins information. (max-rpm x 0.8 is recommended cruising speed per Nigel Calder) Engine is 22 yrs old with >2,000hrs, and you can't tell the engine is running by the color of exhaust: there is no color.
> 
> Warren and Pattie Updike
> 1994 C320 "Warr de Mar" #62
> Middle River, Chesapeake Bay
> 
> -----Original Message-----
> From: John Frost [mailto:john at frostnet.net]
> Sent: Saturday, June 04, 2016 12:54 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Yanmar 3Gm30 typical fuel consumption?
> 
> The spec for my 3YM30 (Note the Y) has a chart that says approximately .3GPH @2000RPM .4GPH at 2250RPM .6GPH at 2500RPM 1.1GPH at 3000RPM 1.3GPH at 3250RPM 1.7GPH at 3500RPM 1.9GPH at 3650RPM 
> 
>                                         +
> Happy Sailing!          /||\
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> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Karl Mielenhausen
> Sent: Saturday, June 4, 2016 11:32 AM
> To: C320IA Discussion List
> Subject: Re: [C320-list] Yanmar 3Gm30 typical fuel consumption?
> 
> Yanmar literature states 0.3 gpm (actually 1.1 lpm) at 1800 rpm.
> 
> Karl
> 
>> On Sat, Jun 4, 2016 at 10:16 AM, Graeme Clark <cg at skyflyer.co.uk> wrote:
>> 
>> Hi all. I have a broken fuel gauge and we have logged 30 hours since 
>> tank was last filled. The local fuel supplier has had a breakdown and 
>> I'm some considerable distance from next nearest, with light to calm winds!
>> Trying to assess my likely remaining fuel. Of that 30 hrs a large part 
>> has been sub 1500rpm just mooring up etc I'm thinking about 0.4 gal/hr 
>> maybe 0.5 to be conservative. I have a spare gallon can also!
>> Anyone have a better guess?
>> Thanks
>> Graeme
>> #366, currently in the Isles of Scilly!
>> 
>> 
>> Sent from mobile: please excuse typos etc.!
> 
> 
> 
>