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

[Graeme Clark]

Now I'm confused! Some people saying 0.75 and others 2.2 gal per hour!
My typical average is under 0.5 but that includes a lot of gentle pottering so probably more when sustained high rom, obviously
0.75 sounds sensible. 2.2 sounds mad!
Graeme

Sent from mobile: please excuse typos etc.!


> On 5 Jun 2016, at 11:39, John Meyers <jcmeyers7 at gmail.com> wrote:
> 
> On my 1997 3GM30 last year I got 2.2 gallons per hour for the 23 gallons
> that I use all year. That was a mix rpms  from 1500 to 3000. I do have a 3
> big bladed feathering propeller that may have something to do with that.
> 
> John Meyers
> Muskegon MI
> Wind Chime #406
> 
>> On Sat, Jun 4, 2016 at 12:53 PM, John Frost <john at frostnet.net> wrote:
>> 
>> 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
>> 
>>                                         +
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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.!
>> 
>> 
>>