On Wednesday 05 January 2005 8:53 am in rec.boats Eisboch wrote:

In my opinion the newer turbocharged diesels that are tweaking lots of
horsepower at high RPM out of small packages have a much shorter service
life. In this case however, the normally aspirated Leyman Ford is
physically almost the same size of the Volvo engines in my Navigator that
produce over three times the hp.

This is correct, wear is caused by friction and friction is
proportional to the square of velocity.

One of the main reasons that diesels last longer is that they
run more slowly, producing max power at around 2000 RPM or less.


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