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#1
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Q:Diesel Engine maintenance when out of service
I'm looking at a boat purchase. The boat has two large 200 KW 1400rpm
(cruising speed) diesels with 3000 hours on each. The problem I see is that they have not been used at all for almost three years. The owner claims the engines were turned manually, that he looked after them and that they are just fine. The boat has been out of the water for about half the time of engine disuse. What I've heard (but I'm no professional) is that you need to run diesels for at least a number of hours per week to keep them in good shape. So, is it still even worth the expense of sending over an engine professional to check out these engines, or should I forget about it? Your advice/insight is appreciated! |
#2
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Q:Diesel Engine maintenance when out of service
G Q wrote:
So, is it still even worth the expense of sending over an engine professional to check out these engines, ...? Of course it is as long as the boat itself is worth your attention. Rick |
#3
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Q:Diesel Engine maintenance when out of service
G Q wrote:
I'm looking at a boat purchase. The boat has two large 200 KW 1400rpm (cruising speed) diesels with 3000 hours on each. The problem I see is that they have not been used at all for almost three years. That may or may not be a problem. The owner claims the engines were turned manually, that he looked after them and that they are just fine. OK, that's all to the good... but do you suspect that owner/seller may tell a tiny fib just to get his hands on your money (and it seems likely to be a large sum)? The boat has been out of the water for about half the time of engine disuse. What I've heard (but I'm no professional) is that you need to run diesels for at least a number of hours per week to keep them in good shape. So, is it still even worth the expense of sending over an engine professional to check out these engines, or should I forget about it? Your advice/insight is appreciated! The first step would be to see if the engines can be turned over, with appropriate intermediate steps, and check how well they run. If the boat is still out of the water, that could present some difficulty too. If the engines can be turned over, then the next step short of getting an engine survey is to get an oil analysis. Don't forget the transmissions too. But if you're proceeding seriously towards purchase, then YES get an engine survey, ti is very much worth the money. Fair Skies Doug King |
#4
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Q:Diesel Engine maintenance when out of service
I'll second Doug's remarks with one question. He suggests an oil
analysis after the engines have been run. I would take the oil samples first thing and send them off -- it's relatively cheap and will tell you a number of things. Also, it depends a lot on what the engines are. A common, relatively modern engine (Cat 3406, for example) can be top end rebuilt for roughly US$1,000 per cylinder. Spend more money and you can fix almost anything that might be wrong. On the other hand, an old or scarce engine may be expensive to rebuild because parts are scarce and therefore pricey. Also, look around the engine room. Is it neat? Well lighted? Clean? Rusty? All of these things tell you something about the owner and his attitude toward machinery. Look at the oil. Diesel engine oil goes black very quickly after changing, so don't worry if it's black, but if it looks like new, it probably is, which suggests that the owner changed the oil after the last use. This is good and bad -- good because it's the right thing to do. Bad because your oil analysis is unlikely to tell you anything. Jim Woodward www.mvFintry.com DSK wrote in message ... G Q wrote: I'm looking at a boat purchase. The boat has two large 200 KW 1400rpm (cruising speed) diesels with 3000 hours on each. The problem I see is that they have not been used at all for almost three years. That may or may not be a problem. The owner claims the engines were turned manually, that he looked after them and that they are just fine. OK, that's all to the good... but do you suspect that owner/seller may tell a tiny fib just to get his hands on your money (and it seems likely to be a large sum)? The boat has been out of the water for about half the time of engine disuse. What I've heard (but I'm no professional) is that you need to run diesels for at least a number of hours per week to keep them in good shape. So, is it still even worth the expense of sending over an engine professional to check out these engines, or should I forget about it? Your advice/insight is appreciated! The first step would be to see if the engines can be turned over, with appropriate intermediate steps, and check how well they run. If the boat is still out of the water, that could present some difficulty too. If the engines can be turned over, then the next step short of getting an engine survey is to get an oil analysis. Don't forget the transmissions too. But if you're proceeding seriously towards purchase, then YES get an engine survey, ti is very much worth the money. Fair Skies Doug King |
#6
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Q:Diesel Engine maintenance when out of service
G Q wrote:
Thanks guys for the great info. Actually, Doug, I was just trying to find out if an unused diesel that had not been used for three years COULD still be any good at all. Oh sure. Actually the engines are less than 10 years old. I guess I should hope the oil hasn't been changed the day before I arrive... If you take a cold oil sample and a hot oil sample, as Jim W suggests, then the results will reveal the oil change. It's difficult (or impossible) to fool a good analysis tech. Fair Skies, Doug King |
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