"Shortwave Sportfishing" wrote in message
...
On 1 Feb 2006 19:24:36 -0800, wrote:
Shortwave Sportfishing wrote:
On 1 Feb 2006 17:55:18 -0800, wrote:
~~ snip ~~
really? and you base this one what?
Thats the way BRP shaped the pistons to help distribute the fuel around
the sparkplug in lean burn. As why it is not so efficient at higher
rpms ... Any book about combustion engine design will tel
bull****. i average a little around 8 to 11 gph at cruise which is 35
mph. thats a damn sight better than any four stroke or two cycle on
the market today.
and who the hell cruises at wot?
Here be a quote from the BWB 90 HP shootout
"In terms of optimum cruising economy, the Evinrude finished in the
middle of the pack. Unfortunately, our test engine had two faults. The
first occurred at 1500 rpm, where the Evinrude was very rough running.
Then, at 2000 rpm, it would not hold a constant rpm but would surge to
2500 or higher. The E-Tec injection system provides a very lean fuel
charge at low rpm for exceptional slow speed economy, and we suspect that
2000 rpm is where the changeover occurs to a normal fuel/air mix. If so,
this likely explains the surging. At 2000 rpm and 7.9 mph, this rig is
about to climb onto plane and the surging will probably be
inconsequential for most owners.
BWB Field Editor Bill Grannis, our Johnson/Evinrude expert, tells us that
this problem, which generally occurs on light or overpropped boats, has
been addressed in a warranty bulletin by BRP titled
"Recalibration/Software Update." The software update that corrects this
problem is available for 2004 models at dealers for no charge. The
warranty bulletin states "improvements are already incorporated in 2005
models."
del