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Old 26-12-2014, 15:21   #1
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Location: Fort Lauderdale, Fl
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Yanmar 4JH4-THE


Is a 3500 hours engine is near to have problems?

Is it better to buy a boat with turbo or non turbo engine. Is more problems to expect with turbo engine?

Is the 4JH4-THE turbo is a good engine?

Thank you
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Old 26-12-2014, 16:35   #2
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Re: Yanmar 4JH4-THE

If cared for 3500 hours should be considered a mid time engine
Nothing wrong with turbo's, but they are something else to break, more complex than a NA engine, but more HP, smaller and more efficient engine for the HP

All opinions of course
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Old 26-12-2014, 16:46   #3
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Location: Lived aboard & cruised for 45 years,- now on a chair in my walk-in closet.
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Re: Yanmar 4JH4-THE

Just as a bit of anecdotal data I'll add that I have 6,568 hrs. and 15 minutes on my naturally aspirated 4JH3E Yanmar with no indications of any real problems to date. I did replace the oil cooler a couple thousand hours back and I have gone through three temperature sensors, but no other significant parts.
Take care and joy, Aythya crew
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