"Short Wave Sportfishing" wrote in message
...
On Sun, 2 Mar 2008 06:48:44 -0500, "Eisboch" wrote:


"DownTime" wrote in message
m...

Short Wave Sportfishing wrote:

I'll have to ask some questions.

Be very careful with those. http://www.yanmarsettlement.com/


In the case of the boat that I have casual interest in, the engines are
much
newer than those referenced in the link. They are also model 6LY2A-STP's
which are close, but different.

In all fairness, the mechanic told me that they had re-powered a busy
commercial charter "head" boat based out of Plymouth with the Yanmar
6LY2A-STP engines. He said that they have been used daily during the
summer
season for the past 2 or 3 years and are not exactly "babied". The
charter
company has not had any problems at all with them.

The Volvo's that I had in the Navigator ran at about 2600 rpm at cruise
and
2800 rpm at WOT and they seemed happy. 3600 rpm just sounds very high
for
a diesel. It's something I'll definitely take note of should I decide to
pursue this boat.

I could be very wrong about this, but it's my understanding that the
whole point of a diesel was higher torgue and horse power at low rpms.

3600 seems very high to me to develop that kind of hp on a diesel.


True, but on the other hand, technology advances and diesel engine
manufacturers have been getting more power out of smaller packages in modern
turbo engine designs. The RPM ratings have also been rising. Only time
will tell if the trade-off in terms of life expectancy between rebuilds
versus cost will be acceptable to the consumers.

The diesels in current Ford and GM trucks happily rev to 4000 rpm.

Eisboch