Re: [Amc-list] Evinrude E-Tec... OT

["Swygert, Francis G MSgt 436 CES/CECM" <Francis.Swygert3@xxxxxxxxxxxx>]

This is a good bit off topic -- Evinrude outboards -- but I'm going to
respond to the list since it is engine technology.

The oil is injected. It does have an engine oil tank, but no sump. I've
got a little experience with oil injected engines -- used to run Suzuki
two-stroke street bikes with it, so it's not exactly new technology. The
last two-stroke street bikes in the US were sold in 1976, so the bikes
were a bit old when I ran them. Had a 305, 250, and 500 (in that order).


Oil is injected in the ball or roller bearings and bore, then picked up
by the fuel charge as it passes through the crankcase. This burns less
oil and provides better lubrication by placing the oil directly where
it's most needed. I always thought it was pretty cool! No oil mixing,
just keep the separate oil tank full of two-cycle oil. 

I miss that GT500A! replaced it with a GS1000G, which I still have. The
500 was quicker from 0-70, but it had been bored out .030" (due to a
cracked ring scratching the bore), and the pistons "notched" where they
lined up with the ports about 1/8". On a piston port two-stroke (the
piston covers ports in the bore as it goes up and down -- basically the
piston is a valve also) notching the piston is the same as putting in a
bigger cam. I had a Honda 650 four cylinder pull up beside me once, look
over at the 500 and twin pipes and grin, then take off. I let him get a
couple bike lengths ahead then blew past him like he was sitting still.
I looked over at the next light and grinned at him -- he ignored me and
just slowly took off at the next light...  That was one fun bike! Parts
were getting to hard to find -- the capacitor went out in the ignition
(CD type) and would have been expensive to replace. Sold it as a spare
to another guy who was racing a GT500A. He ended up putting his ignition
on my bike because of the piston mods. 


-------------------
Date: Wednesday, February 21, 2007 03:50 PM
From: Peter Marano <PMarano@xxxxxxxxx>

The E-Tec is a 2 stroke cycle engine, I suppose the oil is injected. The
  fuel injection is the interesting feature.  It modulates the droplet
size for smoother, cleaner idle and piston cooling at high output
levels.

Peter Marano
Kenosha WI

>
> Message: 7
> Date: Sun, 18 Feb 2007 22:00:01 -0500
> From: "Brien Tourville" <hh7x@xxxxxxxxxxx>
> Subject: [Amc-list] THE GREAT AMERICAN RACE
> To: amc-list@xxxxxxxxxxxx
> Message-ID: <45D8CC61.26341.144B1651@xxxxxxxxxxxxxxxx>
> Content-Type: text/plain; charset=US-ASCII

>
>        going to research the E-Tec Evinrude engines
> as to why they need no oil change - ever -
> either a bearing coating - new bearing materials -
> or parts made from who knows what!
>

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