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

[Millers]

I believe I saw an earlier email.   Correcting a mid placed decimal pt 

Sent from my iPhone

> On Jun 7, 2016, at 9:12 AM, Jeff Hare <Catalina at thehares.com> wrote:
> 
> Right, I think there's something wrong with the math?  I don't believe it's possible to burn anywhere near 3.7 gals/hr in this engine.  If you are pushing that much fuel through, maybe you should be seeing a rooster tail behind your boat, or you have an injector problem.  That's well over 3x what the 3gm30f engine is rated to burn.  :)
> 
> Just an observation...
> -Jeff Hare
> #809
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Rod Boer
> Sent: Tuesday, June 7, 2016 8:35 AM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Yanmar 3Gm30 typical fuel consumption?
> 
> Bill,
> 
> At 3.785 gallons per hour you will only get a little over 5 and a quarter hours of motoring out of a 20 gallon tank. At 2800 RPM I easily do over 20 hours of motoring with plenty of fuel left over.
> 
> Rod Boer
> Odyssey #688
> 
> -----Original Message-----
> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Bill Sloane
> Sent: Tuesday, June 07, 2016 12:24 AM
> To: C320-List at catalina320.com
> Subject: Re: [C320-list] Yanmar 3Gm30 typical fuel consumption?
> 
> Last five years - 3.785438 gallons per hour. Cruise at 3,000 rpm
> 🐠🐠🐠🐠🐠🐠
> 
> Bill
> Hull 594
> Endless Summer
> Olympia WA
> 
> Is that too precise???
> 
>> On Monday, June 6, 2016, 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
>> <javascript:;>] 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
>> <javascript:;>] 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 <javascript:;>]
>> 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                           / ||  \
>>                                  /    ||    \
>>                                /      ||      \
>>                              /        ||        \
>>                            /          ||          \
>>                          /            ||            \
>>                        /              ||              \
>>                      /                ||                \
>>                    /                  ||                  \
>>                  /                    || Hull 1118 \
>>                /                      ||                      \
>>              /                        ||                         \
>>            /     Catalina     ||                           \
>>          /     C320MKII    ||                             \
>>        /            2007         ||                                \
>>      /                                ||_____________\
>>    /_____________||____
>>    _________/__________\_____|__
>>     \              Lake Guntersville, AL                    l_
>>      \________________________________)
>>                                  \       |
>> |  |
>>                                    \__|                               |_|
>> -----Original Message-----
>> From: C320-list [mailto:c320-list-bounces at lists.catalina320.com
>> <javascript:;>] 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 
>> <javascript:;>> 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.!
>