Re: Stus-List Warm up diesel engine

[Franklin Schenk via CnC-List]

Chuck,Now that you mention it the thing that bothers me the most is the noise 
of the engine running that fast while in the slip.  I do not know where he got 
that idea except that he worked for the railroad.  Of course the diesel engines 
in the locomotives are a little larger than the one in his boat. I doubt that 
they were run at a high RPM when sitting still in the yard.
Frank 

On Monday, June 20, 2016 2:35 PM, Chuck Gilchrest via CnC-List 
<cnc-list@cnc-list.com> wrote:
 

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{}#yiv5359827397 Frank,If your friend is tied up in a slip and putting his 
engine in gear at ½ throttle for 5 or more minutes, he better put some chafe 
protection on oversized dock lines along with some really robust bumpers, 
otherwise he may be calling am insurance agent rather than a diesel mechanic.  
I also wouldn’t want the adjacent slip that has to listen to that engine 
churning away each time he comes down to the boat.  At diesel class at 
Annapolis School of Seamanship, the instructor said it was more important to 
run the diesel for a longer period of time (like ½ hour or more), even at lower 
RPMs to let the engine get up to full operating temps than to run it for 5-10 
minutes to get the boat out of the slip and the harbor and then shutting off 
the engine immediately when the sails go up.  My boat is on a mooring, so when 
I go out to the boat, I’ll start up the engine while I’m prepping the boat for 
sailing, which also gives the batteries a bit of a booster charge before 
heading out.  I have to wait for a draw bridge before I get to open water, so 
30 minutes of powerboating isn’t a big inconvenience, more like a necessity for 
me.Chuck GilchrestS/V Half Magic1983 Landfall 35Padanaram, MA    From: CnC-List 
[mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Franklin Schenk via CnC-List
Sent: Monday, June 20, 2016 2:41 PM
To: cnc-list@cnc-list.comun
Cc: Franklin Schenk <fdsch...@flash.net>
Subject: Re: Stus-List Warm up diesel engine  I forgot to mention if it should 
be in gear.  850 to 900 is about the same as the normal idle speed on a car so 
that sounds about right.  On Monday, June 20, 2016 10:42 AM, Joel Aronson via 
CnC-List <cnc-list@cnc-list.com> wrote:  The 3GM manual:  1) Warm up the engine 
for more than 5 minutes. Because lube oil does not reach all themoving parts as 
soon as the engine is started.Operate the engine at around 850-900 rpm for at 
least five minutes.  On Mon, Jun 20, 2016 at 11:36 AM, Franklin Schenk via 
CnC-List <cnc-list@cnc-list.com> wrote:
A friend of mine insists that you cannot warm up a Yanmar engine at idle speed. 
 When we are still in the slip he puts it in gear and runs at about half 
throttle.  None of the other sailors appear to do this.  Unfortunately many do 
not give the engine a chance to warm up at all.  I am open to suggestions and 
the reason for what you are doing.  Frankc/c 29
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  -- Joel 
301 541 8551  ___

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Re: Stus-List Warm up diesel engine

[Josh Muckley via CnC-List]

The machinist that I regularly use has urged me to run the engine for no
less that 3 hours total.  He says it just takes that long to drive out the
accumulated moisture in the engine oil.

As an alternative to all this talk of warming up, why not just keep a block
heater on the engine?  I guess on a mooring this isn't much of an option
but in a slip it might be a solution.  I have a block heater that I use to
keep the condensation out during the winter months.  Never thought about
using it during the summer.

Josh Muckley
S/V Sea Hawk
1989 C 37+
Solomons, MD
On Jun 20, 2016 11:37 AM, "Franklin Schenk via CnC-List" <
cnc-list@cnc-list.com> wrote:

A friend of mine insists that you cannot warm up a Yanmar engine at idle
speed.  When we are still in the slip he puts it in gear and runs at about
half throttle.  None of the other sailors appear to do this.  Unfortunately
many do not give the engine a chance to warm up at all.  I am open to
suggestions and the reason for what you are doing.

Frank
c/c 29

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Contributions are greatly appreciated!
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Re: Stus-List Warm up diesel engine

[Chuck Gilchrest via CnC-List]

Frank,

If your friend is tied up in a slip and putting his engine in gear at ½ 
throttle for 5 or more minutes, he better put some chafe protection on 
oversized dock lines along with some really robust bumpers, otherwise he may be 
calling am insurance agent rather than a diesel mechanic.  I also wouldn’t want 
the adjacent slip that has to listen to that engine churning away each time he 
comes down to the boat.

 

At diesel class at Annapolis School of Seamanship, the instructor said it was 
more important to run the diesel for a longer period of time (like ½ hour or 
more), even at lower RPMs to let the engine get up to full operating temps than 
to run it for 5-10 minutes to get the boat out of the slip and the harbor and 
then shutting off the engine immediately when the sails go up.  My boat is on a 
mooring, so when I go out to the boat, I’ll start up the engine while I’m 
prepping the boat for sailing, which also gives the batteries a bit of a 
booster charge before heading out.  I have to wait for a draw bridge before I 
get to open water, so 30 minutes of powerboating isn’t a big inconvenience, 
more like a necessity for me.

Chuck Gilchrest

S/V Half Magic

1983 Landfall 35

Padanaram, MA

 

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Franklin 
Schenk via CnC-List
Sent: Monday, June 20, 2016 2:41 PM
To: cnc-list@cnc-list.comun
Cc: Franklin Schenk <fdsch...@flash.net>
Subject: Re: Stus-List Warm up diesel engine

 

I forgot to mention if it should be in gear.  850 to 900 is about the same as 
the normal idle speed on a car so that sounds about right.

 

On Monday, June 20, 2016 10:42 AM, Joel Aronson via CnC-List 
<cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > wrote:

 

The 3GM manual:

 

1) Warm up the engine for more than 5 minutes. Because lube oil does not reach 
all the

moving parts as soon as the engine is started.

Operate the engine at around 850-900 rpm for at least five minutes.

 

On Mon, Jun 20, 2016 at 11:36 AM, Franklin Schenk via CnC-List 
<cnc-list@cnc-list.com <mailto:cnc-list@cnc-list.com> > wrote:

A friend of mine insists that you cannot warm up a Yanmar engine at idle speed. 
 When we are still in the slip he puts it in gear and runs at about half 
throttle.  None of the other sailors appear to do this.  Unfortunately many do 
not give the engine a chance to warm up at all.  I am open to suggestions and 
the reason for what you are doing.

 

Frank

c/c 29


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-- 

Joel 
301 541 8551

 

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Re: Stus-List Warm up diesel engine

[Franklin Schenk via CnC-List]

I forgot to mention if it should be in gear.  850 to 900 is about the same as 
the normal idle speed on a car so that sounds about right. 

On Monday, June 20, 2016 10:42 AM, Joel Aronson via CnC-List 
 wrote:
 

 The 3GM manual:
1) Warm up the engine for more than 5 minutes. Because lube oil does not reach 
all themoving parts as soon as the engine is started.Operate the engine at 
around 850-900 rpm for at least five minutes.
On Mon, Jun 20, 2016 at 11:36 AM, Franklin Schenk via CnC-List 
 wrote:

 A friend of mine insists that you cannot warm up a Yanmar engine at idle 
speed.  When we are still in the slip he puts it in gear and runs at about half 
throttle.  None of the other sailors appear to do this.  Unfortunately many do 
not give the engine a chance to warm up at all.  I am open to suggestions and 
the reason for what you are doing.
Frankc/c 29
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what we do, please help us pay for our costs by donating. All Contributions are 
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-- 
Joel 
301 541 8551
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Re: Stus-List Warm up diesel engine

[Marek Dziedzic via CnC-List]

I my mind, the main reason to warm up the engine is to make sure that it would 
not stall when you drop the revs to idle. When you leave the slip, you want to 
make sure that the engine is operating properly and it is available, when you 
need it (tight quarters manoeuvring). It is enough to warm it up to a point 
when it runs smoothly at idle. Generally, if you start it up and then go about 
untying the dock lines you should be fine. In the fall, it takes a bit longer 
(here, the air might be nippy).

Marek
Ottawa, ON

From: Dennis C. via CnC-List 
Sent: Monday, June 20, 2016 12:12
To: CnClist 
Cc: Dennis C. 
Subject: Re: Stus-List Warm up diesel engine

Diesels don't like to be run at idle. Particularly Yanmars. Idling a Yanmar at 
idle or slow speed for long periods may cause soot build up in the exhaust 
elbow. It's better to operate them with a load at higher rpm. 


That being said, you still need to let it warm up a few SECONDS or so to ensure 
good lubrication. Search the Internet, you'll find lots of articles by 
mechanics that debunk the myth of letting engines warm up for minutes before 
using. Their reasoning is that engines warm up quicker under load than at idle. 
Idling a cold engine actually causes more wear. However, they recommend 
moderate rpm until reaching operating temperature.


It's a balancing act.


Dennis C.

Touche' 35-1 #83

Mandeville, LA


On Mon, Jun 20, 2016 at 10:41 AM, Joel Aronson via CnC-List 
<cnc-list@cnc-list.com> wrote:

  The 3GM manual: 

  1) Warm up the engine for more than 5 minutes. Because lube oil does not 
reach all the
  moving parts as soon as the engine is started.
  Operate the engine at around 850-900 rpm for at least five minutes.

  On Mon, Jun 20, 2016 at 11:36 AM, Franklin Schenk via CnC-List 
<cnc-list@cnc-list.com> wrote:

A friend of mine insists that you cannot warm up a Yanmar engine at idle 
speed. When we are still in the slip he puts it in gear and runs at about half 
throttle. None of the other sailors appear to do this. Unfortunately many do 
not give the engine a chance to warm up at all. I am open to suggestions and 
the reason for what you are doing.

Frank
c/c 29

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Contributions are greatly appreciated!






  -- 

  Joel 
  301 541 8551

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  This list is supported by the generous donations of our members. If you like 
what we do, please help us pay for our costs by donating. All Contributions are 
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Re: Stus-List Warm up diesel engine

[Dennis C. via CnC-List]

Diesels don't like to be run at idle.  Particularly Yanmars.  Idling a
Yanmar at idle or slow speed for long periods may cause soot build up in
the exhaust elbow.  It's better to operate them with a load at higher rpm.

That being said, you still need to let it warm up a few SECONDS or so to
ensure good lubrication.  Search the Internet, you'll find lots of articles
by mechanics that debunk the myth of letting engines warm up for minutes
before using.  Their reasoning is that engines warm up quicker under load
than at idle.  Idling a cold engine actually causes more wear.  However,
they recommend moderate rpm until reaching operating temperature.

It's a balancing act.

Dennis C.
Touche' 35-1 #83
Mandeville, LA

On Mon, Jun 20, 2016 at 10:41 AM, Joel Aronson via CnC-List <
cnc-list@cnc-list.com> wrote:

> The 3GM manual:
>
> 1) Warm up the engine for more than 5 minutes. Because lube oil does not
> reach all the
> moving parts as soon as the engine is started.
> Operate the engine at around 850-900 rpm for at least five minutes.
>
> On Mon, Jun 20, 2016 at 11:36 AM, Franklin Schenk via CnC-List <
> cnc-list@cnc-list.com> wrote:
>
>> A friend of mine insists that you cannot warm up a Yanmar engine at idle
>> speed.  When we are still in the slip he puts it in gear and runs at about
>> half throttle.  None of the other sailors appear to do this.  Unfortunately
>> many do not give the engine a chance to warm up at all.  I am open to
>> suggestions and the reason for what you are doing.
>>
>> Frank
>> c/c 29
>>
>> ___
>>
>> This list is supported by the generous donations of our members. If you
>> like what we do, please help us pay for our costs by donating. All
>> Contributions are greatly appreciated!
>>
>>
>
>
> --
> Joel
> 301 541 8551
>
> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
>
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Re: Stus-List Warm up diesel engine

[Joel Aronson via CnC-List]

The 3GM manual:

1) Warm up the engine for more than 5 minutes. Because lube oil does not
reach all the
moving parts as soon as the engine is started.
Operate the engine at around 850-900 rpm for at least five minutes.

On Mon, Jun 20, 2016 at 11:36 AM, Franklin Schenk via CnC-List <
cnc-list@cnc-list.com> wrote:

> A friend of mine insists that you cannot warm up a Yanmar engine at idle
> speed.  When we are still in the slip he puts it in gear and runs at about
> half throttle.  None of the other sailors appear to do this.  Unfortunately
> many do not give the engine a chance to warm up at all.  I am open to
> suggestions and the reason for what you are doing.
>
> Frank
> c/c 29
>
> ___
>
> This list is supported by the generous donations of our members. If you
> like what we do, please help us pay for our costs by donating. All
> Contributions are greatly appreciated!
>
>


-- 
Joel
301 541 8551
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Stus-List Warm up diesel engine

[Franklin Schenk via CnC-List]

 A friend of mine insists that you cannot warm up a Yanmar engine at idle 
speed.  When we are still in the slip he puts it in gear and runs at about half 
throttle.  None of the other sailors appear to do this.  Unfortunately many do 
not give the engine a chance to warm up at all.  I am open to suggestions and 
the reason for what you are doing.
Frankc/c 29___

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