Because that doesn't address the burn problem. 2 strokes do not burn clean
because the intake and exhaust all happens at the same time. Over a wide
rpm range you invariably have fuel that escapes with the exhaust. That's
the problem they're trying to solve because they have to meet emission
standards now.

"HLAviation" wrote in message
link.net...
Ya know, a 2 stroke doesn't have to oil the bottom end through the fuel.
I've always wondered why the OB manufacturers didn't change the design to
a
closed crankcase design with a dry sump oil system and a simple
supercharger. Cheaper, simpler, proven.

"Calif Bill" wrote in message
k.net...

"Harry Krause" wrote in message
...
JamesgangNC wrote:
Not taking a position on Karen's usefulness but I have to agree with
her
position on 2 strokes. There is just far too much established 4
stroke
engineering that can be used to make reliable riskfree 4 stroke
products.
Trying to make a 2 stroke low emission is just not worth it. Doing
so
negates one of the biggests advantages of a two stroke, it's
simplicity.

Do you have some legitimate statistics that demonstrate that four
stroke
outboards are measurably more reliable and riskfree than two-stroke
outboards. I mean generally, say, for the last 50 years of production,
in horsepowers of 150 or more. Big, highly stressed engine. The real
deals.

I'll be glad to read them with great interest.

Not opinions. Genuine, scientifically based statistics.


--
A vote for Nader is a vote for Bush;
A vote for Bush is a vote for Apocalypse.

50 years is too far back. Those 2 strokes were simple. The Optimax and
Ficht of the last 10 years have not shown a lot of reliability. Witness
the
demise of original OMC. With the big Honda a basic high performance car
engine with a dry sump. there should be great reliability. The E-Tec,
etc,
with the addition of air compressors, low amount of lubrication at the
lower
end as the requirements for less oil and emissions. Makes for a engine
that
is on the edge of reliability.
Bill