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11-04-2011, 20:37
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#1
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Registered User
Join Date: Nov 2010
Location: Alberta, Canada
Boat: Island Packet 35 Cutter Rig
Posts: 76
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Engine Hours: How Many Are Too Many?
When a Yanmar engine has 2900 hours is that to much?
What constitutes too many hours?
What is the average life expectancy of a marine diesel engine?
To many questions? Can't help myself, still learning, and apparently "my husband says" the running on of the fingers.....ya right....lol
Velma
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11-04-2011, 22:17
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#2
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Registered User
Join Date: Mar 2008
Posts: 2,144
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Re: Engine hours, how many are to many?
Well my engine died at around 1800 hours after 20 years use but, was rebuilt and someone else is using it today. I think conventional wisdom is a diesel "should" last 6,000 hours before a rebuild. BUT, on sailboats diesels tend to rust out before they wear out. Because on sailboats diesels are not used like they liked to be worked. Lot's of on and off motoring is not the best way to operate them. As they say your milege may vary. BTW when mine died I converted to electric propulsion and never looked back.
__________________
Mike
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11-04-2011, 22:21
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#3
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Registered User
Join Date: May 2009
Location: Punta De Mita
Boat: Vagabond 39 Hull # 1
Posts: 1,842
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Re: Engine hours, how many are to many?
A friend has a refrigerator with an Isuzu diesel that has 60,000 hours on it. It's in a much better environment than our boat engines and it's well maintained, obviously. I added it up and it was something like 9.6 years, 24/7. I think Captain Mike said it right.
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11-04-2011, 22:46
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#4
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Registered User
Join Date: Apr 2009
Location: Lindesnes,Norway
Boat: Lagoon380 Comfort#637
Posts: 716
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Re: Engine hours, how many are to many?
Charter boats in Croatia,Greece, ect. runs normaly around 5000 hrs on Volvos and around 7000hrs on Yanmars
Around 40 fots boats and 50HK engines.
Then they get full Makeover. and normaly boats are sold.
------
and my nabors fishing boat has a generator, its a Volvo 57HK , it was opened up for check afther 8 years and more than 70000hrs run. No wear at all. that was 4 years ago, and still running, 24/7/365. and it will keep on going. it does not get started and stopped all the time, it runs at the correct rpm, a clean engine inside, that is hard to do when it is your motor.
give good maint. and they will last a long time.
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12-04-2011, 05:52
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#5
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Registered User
Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,961
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Re: Engine Hours: How many are too many?
When we had a 2GM20F installed in our old boat in '87, the Yanmar Rep told us to safely count of 10,000 hours before a rebuild. Perkin's 4-108's are reportedly good for 20,000 hours. I suspect the Guru of Seach (GordMay) can come up with more specifics...
FWIW...
__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
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12-04-2011, 06:37
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#6
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Registered User
Join Date: Aug 2007
Location: Clear Lake Marine Services - Seabrook, Texas
Boat: Gulfstar, Mark II Ketch, 43'
Posts: 2,359
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Re: Engine Hours: How many are too many?
2900 hrs well maintained is just broke in.
100 hrs not maintained will trash an engine.
__________________
Formerly Santana
The winds blow true,The skies stay blue,
Everyday is a good day for SAILING!!!!
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12-04-2011, 06:38
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#7
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Registered User
Join Date: Sep 2010
Location: georgetown sc
Boat: gulfstar 41 aux jenny lynn
Posts: 135
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Re: Engine Hours: How many are too many?
My new enngine the manual says 12000 hours. General inspections changing cooling fluids t-stat ect.at 6000 hours which will be done more often Cat told me the same thing yesterday.
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12-04-2011, 06:38
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#8
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Sponsoring Vendor
Join Date: Oct 2007
Location: Hollywood, Fl.
Boat: FP Athena 38' Poerava
Posts: 3,984
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Re: Engine Hours: How many are too many?
Both my Yanmars have over 10,000 hrs and going strong. But then my wife says I pay more attention to them than I do her. She might be right. Since her birthday is coming up and we really should spend more time together I'm going to gift her a new filter wrench.
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12-04-2011, 08:03
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#9
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Registered User
Join Date: Aug 2008
Location: Depends
Boat: Cabo Rico
Posts: 770
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Re: Engine Hours: How many are too many?
Still plugging along with ~7,500 hours on our 23 year old 4JHTE Yanmar and hoping to reach Tellie's + a few in the next 10 years. We don't obsess over it either. We just change the oil and address problems when we have them.
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12-04-2011, 08:07
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#10
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cat herder, extreme blacksheep
Join Date: Jul 2008
Location: furycame alley , tropics, mexico for now
Boat: 1976 FORMOSA yankee clipper 41
Posts: 18,967
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Re: Engine Hours: How many are too many?
diesels last forever--ask a trucker!!! lol..mine are unknown amount of hours-- yannie was overhauled at XXX hours and i put less than 150 on her--- perkins has ??? hours onher andi put another 6 on our trip so far..i think was 6--- didnt have to listen to it long, and we got here mostly under sail.
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12-04-2011, 08:16
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#11
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CF Adviser
Join Date: Dec 2007
Location: Wherever our boat is; Playa Zaragoza, Isla Margarita
Boat: 1994 Solaris Sunstream 40
Posts: 2,449
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Re: Engine Hours: How many are too many?
I have 3200 hours and counting on my 3GM30F's and apart from, as Pamlico says, regular maintenance and addressing problems when they arise, have no concerns about the need for imminent replacement/rebuilds. If well maintained, they should be considered no worse than 'middle - aged'.
Brad
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12-04-2011, 09:35
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#12
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Senior Cruiser
Join Date: Feb 2006
Location: Highlands, NJ 07732
Boat: Laurent Giles Salar 40
Posts: 286
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Re: Engine Hours: How many are too many?
Quote:
Originally Posted by Tellie
She might be right. Since her birthday is coming up and we really should spend more time together I'm going to gift her a new filter wrench.
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What a romantic
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12-04-2011, 10:00
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#13
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Registered User
Join Date: Mar 2009
Posts: 204
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Quote:
Originally Posted by Tellie
Both my Yanmars have over 10,000 hrs and going strong. But then my wife says I pay more attention to them than I do her. She might be right. Since her birthday is coming up and we really should spend more time together I'm going to gift her a new filter wrench.
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How often do you service her ??
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12-04-2011, 10:06
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#14
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Registered User
Join Date: Mar 2003
Location: Philippines in the winters
Boat: It’s in French Polynesia now
Posts: 11,368
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Re: Engine Hours: How many are too many?
I have a Pathfinder (VW) that has 7000 hours (with a head job) and still runs good.
As long as the compression and oil pressure is up they are still useable. It's the misuse of a diesel that kills it.
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
The measure of a man is how he navigates to a proper shore in the midst of a storm!
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12-04-2011, 12:16
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#15
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Moderator Emeritus
Join Date: Nov 2008
Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
Boat: Morgan OI 413 1973 - Aythya
Posts: 8,466
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Re: Engine Hours: How many are too many?
I have 5,138 hours on my eleven year 4JH3E Yanmar and I keep up with regular maintenance including valve adjustment checks. I have only replaced the oil pressure sensor and the oil cooler due to a cracked hose barb on the water side. I'm expecting an easy 10,000 hours if not more.
__________________
Take care and joy, Aythya crew
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