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

[Jeff Hare]

Jim, 

This is not correct.  There is a 28 gallon tank listed at Catalina Direct
but I am very skeptical that it can be installed without significant
alterations to the boat.  The stock tank is 19 gallons in all the C320's as
far as I know.

If you're looking to replace the fuel tank and want more capacity, I have a
design on file at the tank mfgr for a 23 gallon tank that fits through the
aft cabin opening and doesn't interfere with the shelf in the starboard aft
locker.  The tank walls are thicker than the stock tank, the fuel pickup,
sender and shutoff are easier to reach.  You will need to modify wood frame
that keeps it from sliding around and allows you to strap it down.

I made a true scale model of the tank out of wood to find the largest tank
that would easily fit without having to alter any of the access paths.  I
have lots more details on this project.

-Jeff Hare
#809 Woodbine II


-----Original Message-----
From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf
Of jbrown5093 at yahoo.com
Sent: Tuesday, June 7, 2016 7:32 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Yanmar 3Gm30 typical fuel consumption?

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!          /||\
> John                           / ||  \
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>                  /                    || Hull 1118 \ 
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>            /     Catalina     ||                           \
>          /     C320MKII    ||                             \ 
>        /            2007         ||                                \ 
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>     \              Lake Guntersville, AL                    l_
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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.!
> 
> 
> 
>