So there's been a bit of discussion on the Diesel-Vanagon lists about
the design criteria for the Vanagon.

Frank Grunthaler mentioned the engineering data that he scanned and
translated that lives on Alistair Bell's website.  <http://members.shaw.ca/ragnarhairybreeks/vantech1.html
 >  Amongst the scans was a document that piqued my gasoline engined
interest.  Take a look at Automobiletechnische Zeitschrifte article on
the 1.9l wasserboxer engine:
<http://members.shaw.ca/ragnarhairybreeks/technical%20articles/WB19/WB19p1.html
 >

Compare the graph on page 2 with the similar graph on page 3. What
caught my eye was the flatness of the torque curve on the 66 kw motor
(2800-4400 is essentially flat) as opposed to the sudden drop off of
torque on the 63 kw motor (peaks at 2900 and immediately begins to
drop off). Driving a diesel most of the time makes me very aware of
the value of torque in driving these beasts.

Does anyone know what the differences are between the 63 kW motor and
the 66 kW motor? Is it black box differences or mechanical
differences? How do I make my US spec 1.9 give me a torque curve like
that?

Thanks

Jim