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

John Meyers jcmeyers7 at gmail.com
Sun Jun 5 05:53:12 PDT 2016


I am so sorry/dyslexic. I meant to write that I get 2.2 hours per gallon.

John Meyers

On Sun, Jun 5, 2016 at 8:47 AM, Graeme Clark <cg at skyflyer.co.uk> wrote:

> 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
> >>
> >>                                         +
> >> Happy Sailing!          /||\
> >> John                           / ||  \
> >>                                  /    ||    \
> >>                                /      ||      \
> >>                              /        ||        \
> >>                            /          ||          \
> >>                          /            ||            \
> >>                        /              ||              \
> >>                      /                ||                \
> >>                    /                  ||                  \
> >>                  /                    || Hull 1118 \
> >>                /                      ||                      \
> >>              /                        ||                         \
> >>            /     Catalina     ||                           \
> >>          /     C320MKII    ||                             \
> >>        /            2007         ||                                \
> >>      /                                ||_____________\
> >>    /_____________||____
> >>    _________/__________\_____|__
> >>     \              Lake Guntersville, AL                    l_
> >>      \________________________________)
> >>                                  \       |
> >> |  |
> >>                                    \__|
>  |_|
> >> -----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.!
> >>
> >>
> >>
>
>


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