Can anybody give me an idea of the expected life of a Yanmar 62 HP as fitted to the Passage 42.Given that the engine was properly cared for etc.Mine has 1865 Hours under her belt.
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About 5 or 6 billion rotations on average
When calculated at 50% of max rpm. For small high-speed marine diesels (3000 - 3600 rpm max) this translates into about at least 5000 engine hours (on average); for medium speed diesels (1500 - 1800 rpm max) this gives at least 10,000 hours and for low speed diesels (400 - 500 rpm) this gives more than 30,000 hours. Interestingly, the human heart gets about 2.5 billion beats in, on average. Not quite as good as a diesel engine but easily better than a gasoline engine at approx. 1 billion rotations. Disclaimer: The opinions represented here are entirely my own and are not endorsed by Yanmar, God or General Motors, respectively. Have fun! Flying Dutchman
When calculated at 50% of max rpm. For small high-speed marine diesels (3000 - 3600 rpm max) this translates into about at least 5000 engine hours (on average); for medium speed diesels (1500 - 1800 rpm max) this gives at least 10,000 hours and for low speed diesels (400 - 500 rpm) this gives more than 30,000 hours. Interestingly, the human heart gets about 2.5 billion beats in, on average. Not quite as good as a diesel engine but easily better than a gasoline engine at approx. 1 billion rotations. Disclaimer: The opinions represented here are entirely my own and are not endorsed by Yanmar, God or General Motors, respectively. Have fun! Flying Dutchman
Gerry, some of the experts have seen between...
8,000 and 10,000 hours on these engines when properly cared for. Terry P.S. Fred, get a grip (he, he).
8,000 and 10,000 hours on these engines when properly cared for. Terry P.S. Fred, get a grip (he, he).
In all fairness to the Almighty.......
The human heart does actually better than I estimated if one takes into account that each heartbeat represents a complete work cycle (i.e. filling and emptying), whereas it takes 2 revolutions to complete a single 4-stroke engine cycle..... So, I should have said that the human heart and a Diesel engine are equally tough! This, in spite of Terry's unfair attempt to boost the diesel engine record by citing the exception rather than the rule. After all, I can throw in a 5-billion-heart-beat-old Kurdistan woman (approx. 120 years) to equal his 5-billion-cycle diesel engine. Moreover, chances are that 10,000 hour diesel engine owners never run their engines at high speeds so they do achieved lifetimes similar to that of a medium-speed engine..... In fact that is how I run my own diesel engine most of the time. It has 4,000 hours on it and still starts faster than I can release the button. As for my heart; it runs at 60 beats/minute (notwithstanding Fred's amorous declarations); i.e. equivalent to 120 rpm in engine parlance. This should give me an expected lifetime of.... (darn, where did I happen to put my calculator ??). Have fun! Flying Dutchman
The human heart does actually better than I estimated if one takes into account that each heartbeat represents a complete work cycle (i.e. filling and emptying), whereas it takes 2 revolutions to complete a single 4-stroke engine cycle..... So, I should have said that the human heart and a Diesel engine are equally tough! This, in spite of Terry's unfair attempt to boost the diesel engine record by citing the exception rather than the rule. After all, I can throw in a 5-billion-heart-beat-old Kurdistan woman (approx. 120 years) to equal his 5-billion-cycle diesel engine. Moreover, chances are that 10,000 hour diesel engine owners never run their engines at high speeds so they do achieved lifetimes similar to that of a medium-speed engine..... In fact that is how I run my own diesel engine most of the time. It has 4,000 hours on it and still starts faster than I can release the button. As for my heart; it runs at 60 beats/minute (notwithstanding Fred's amorous declarations); i.e. equivalent to 120 rpm in engine parlance. This should give me an expected lifetime of.... (darn, where did I happen to put my calculator ??). Have fun! Flying Dutchman
it depends on how much sex
Research indicates that the human heart, during orgasm, beats at the rate of 120 beats per minute. It is of no small consequence that this is the precise beat to which two types of music are composed: military marches and disco. The one thing diesel engines and the human heart have in common is that more tend to die from neglect than from overuse.
Research indicates that the human heart, during orgasm, beats at the rate of 120 beats per minute. It is of no small consequence that this is the precise beat to which two types of music are composed: military marches and disco. The one thing diesel engines and the human heart have in common is that more tend to die from neglect than from overuse.
So true; but what about Ravel's "Bolero" ? ;D
The point being: at low RPMs everything lasts a lot longer!! Have fun! Flying Dutchman
The point being: at low RPMs everything lasts a lot longer!! Have fun! Flying Dutchman
ah, bolero
I haven't listened to it in years. 3/4 time, in C Major. An exagerated slow tempo which remains the same through all 18 repititions of the melody, while all the time the volume builds. The say it was a result of the composor's pathology,; he died during brain surgery to remove the tumor. Took me ten minutes to locate the CD. Too many tunes; not enough boat. Hard to worry about how long your diesel will last when you're listening to music like this. Thanks, Henk.
I haven't listened to it in years. 3/4 time, in C Major. An exagerated slow tempo which remains the same through all 18 repititions of the melody, while all the time the volume builds. The say it was a result of the composor's pathology,; he died during brain surgery to remove the tumor. Took me ten minutes to locate the CD. Too many tunes; not enough boat. Hard to worry about how long your diesel will last when you're listening to music like this. Thanks, Henk.
Does Henk need to rethink his last post?...
Some of the diesel experts clain (which I am not) that low RPMs are harder on the engine. Glazed cylinders, carbon deposits, etc. The same can be said for the human condition. Terry
Some of the diesel experts clain (which I am not) that low RPMs are harder on the engine. Glazed cylinders, carbon deposits, etc. The same can be said for the human condition. Terry
John, it sounds as if you might have missed
Bo Derek's rendition of "Bolero". If so, you DO have something to look forward to. The movie is called "10", I believe. Have fun! Flying Dutchman
Bo Derek's rendition of "Bolero". If so, you DO have something to look forward to. The movie is called "10", I believe. Have fun! Flying Dutchman
Terry, I did rethink & found a great link...
The author is Tony Athens, Cummin Marine's crack diesel mechanic, who moderates several diesel boards, including a Yanmar site. He recommends breaking in at high enough speed to avoid glazing and then operate at around 50% of rated HP if you want to achieve maximum life (see link). The same works well for human beings, IMHO Have fun! Flying Dutchman
The author is Tony Athens, Cummin Marine's crack diesel mechanic, who moderates several diesel boards, including a Yanmar site. He recommends breaking in at high enough speed to avoid glazing and then operate at around 50% of rated HP if you want to achieve maximum life (see link). The same works well for human beings, IMHO Have fun! Flying Dutchman
OK Guy's, everyone is talking about engine life
as if that hunk of iron is going to go 'poof' at some pre-programmed point in time. It has been my experience with the rebuild of my Yanmar and several hot rods, that you just replace the consumable parts. The block wears, sure, but even when the cylinder bores are all the way 'out', just sleeve it. The crank of my Yanmar (3GM30F) had no wear after 5000 hours. These engines don't even have cam bearings. There was no wear on ANY PART OF THE CAM! How do they do that?
as if that hunk of iron is going to go 'poof' at some pre-programmed point in time. It has been my experience with the rebuild of my Yanmar and several hot rods, that you just replace the consumable parts. The block wears, sure, but even when the cylinder bores are all the way 'out', just sleeve it. The crank of my Yanmar (3GM30F) had no wear after 5000 hours. These engines don't even have cam bearings. There was no wear on ANY PART OF THE CAM! How do they do that?
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