"Jere Lull" wrote

A new 2GM20 will put out about the same power, perhaps more

The new 2 cylinders are called 15 HP engines but it is the ratings that have
changed; not the engines. Our "20"QM is really a 15.


The Yanmars, old and new, are work horses. Ours has 1200 hours and about
all I need to do is change the oil and inspect the rest -- and keep the
fuel clean, the only problem we've had other than a plugged cooling line
at the inlet.


This is a universal sentiment among Yanmar owners. I've seldom heard a
point of view expressed so consistently about a type of machinery.

--
Roger Long

In article ,
"Roger Long" wrote:


"Jere Lull" wrote

A new 2GM20 will put out about the same power, perhaps more

The new 2 cylinders are called 15 HP engines but it is the ratings that have
changed; not the engines. Our "20"QM is really a 15.

Sister boats with the old raw water 3GMs max out no faster than us and
are usually a bit slower. They always burn more fuel.

You can't go just by the numbers, as the older engines were geared
higher. Faster shaft and prop, more drag, less effective power. We swing
a 16x10" 3-blade.

--
Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's NEW Pages: http://web.mac.com/jerelull/iWeb/Xan/
Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/

Jere Lull wrote:
You can't go just by the numbers, as the older engines were geared
higher. Faster shaft and prop, more drag, less effective power. We swing
a 16x10" 3-blade.

Jere Lull
Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD)
Xan's NEW Pages: http://web.mac.com/jerelull/iWeb/Xan/
Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/


Thanks Je

Very helpful information to chew. Your statment about owner earnings
compared to yard hourly rates is a very compelling concept. My earnings
come rather easily compared to what thoes hard working, knuckle bustin,
yard guys do daily.

You have detailed my nagging fear regarding "all the extras." I can see
how a new model repower just might start a cascade of events I am not
quite ready to handle.
Thanks again,
Bob