FUEL MIXTURE - 1988 JOHNSON 6
 

100:1 or 50:1 ??

Help!

Gary

FUEL MIXTURE - 1988 JOHNSON 6
 

gary wrote:
100:1 or 50:1 ??

Help!

Gary

My 1986 6hp Evinrude Yachtwin originally called for 100:1 after the
breakin period...*but* later that spec. was changed to 50:1.
I'd play it safe and go with 50:1.

FUEL MIXTURE - 1988 JOHNSON 6
 

motor was originally sold as 100 to 1 ...but later johnson/evinrude changed
there mind because of too many falures and recomended 50 to 1 ..i run 50 to
1 and have had no problems with my 86' 9.9
"gary" wrote in message
oups.com...
100:1 or 50:1 ??

Help!

Gary

FUEL MIXTURE - 1988 JOHNSON 6
 

definitely 50:1 after 1984

In article .com,
gary wrote:

100:1 or 50:1 ??

Help!

Gary

FUEL MIXTURE - 1988 JOHNSON 6
 

if you have to ask such a basic question perhaps you have no business
operating said motor? you are a potential danger to all innocent
bystanders in the area where you operate this motor and vessel. may i
suggest you take up basket weaving or another indoor activity far away
from the public.

FUEL MIXTURE - 1988 JOHNSON 6
 

Meye5 wrote:
if you have to ask such a basic question perhaps you have no business
operating said motor? you are a potential danger to all innocent
bystanders in the area where you operate this motor and vessel. may i
suggest you take up basket weaving or another indoor activity far away
from the public.

I disagree. He came to a place where he could count on people with
similar experiences lurking. Another option would have been talking to
a Johnson dealer.
The people who shouldn't be around boats are the yahoos who refuse to
ask advice and do whatever strikes their fancy.

FUEL MIXTURE - 1988 JOHNSON 6
 

Thank you all. Its not my engine, I'm just fixing it. I replaced the
head gasket and put in the carb kit, but it still smokes white on start
up. However, as the smoke goes away under load, I don't think we're
looking at a ring job - yet, in spite of burning 100:1 for a season.
The owner has been duly advised and admonished to mix his fuel to 50:1.

Oh! One more thing: 'Meye5", you are truly a sublime yet pathetic
asshole.

Gary

FUEL MIXTURE - 1988 JOHNSON 6
 

"gary" wrote in
oups.com:

The owner has been duly advised and admonished to mix his fuel to 50:1.



It's probably too late. All my 2-stroke marine engines have always run a
quart of TC-W3 to every 10 gallons, premixed. I think there's a sweet deal
between the EPA and the 2-stroke manufacturers.....

"You tell 'em to run 50:1 or 100:1 that'll wear the engines out faster, and
we'll let you continue to build such amazingly simple engines at such
amazing profit margins."

When I sold the Sea Rayder it was crowding 1000 hours on a 150hp 6-cyl
carb'd Mercury Sport Jet. It ran ratios less than 40:1 its whole
life....probably 30:1 or so in that tank. You could still see the hone
marks on the cylinder walls if you poked a borescope down in that spark
plug hole. Compression was more the day I sold it than it was the day I
bought it because the rings had "settled in"...(c;

If it ain't smokin'....it ain't lubin', either! It's a 2-stroke, you know.

--
Larry

FUEL MIXTURE - 1988 JOHNSON 6
 

On Mon, 10 Oct 2005 09:22:48 -0400, Larry wrote:


"You tell 'em to run 50:1 or 100:1 that'll wear the engines out faster, and
we'll let you continue to build such amazingly simple engines at such
amazing profit margins."
/// Compression was more the day I sold it than it was the day I
bought it because the rings had "settled in"...(c;

If it ain't smokin'....it ain't lubin', either! It's a 2-stroke, you know.


I don't even think outboard two strokes are that simple. The evinrude
55HP I stripped after it threw a rod, had roller bearing mains and con
rods - like you wish auto engines had.

Brian Whatcott Altus OK

FUEL MIXTURE - 1988 JOHNSON 6
 

In article ,
Brian Whatcott wrote:

I don't even think outboard two strokes are that simple. The evinrude
55HP I stripped after it threw a rod, had roller bearing mains and con
rods - like you wish auto engines had.

Brian Whatcott Altus OK

How do you install Roller Bearings on connecting rods? All the
Roller Bearings used in engines I have ever seen, were on
single cyl engine cranks that could be pressed on from each end.
I would think that any split shell Roller Bearing, would be less
robust than a regular shell bearing in the same application.

Me just wondering........

FUEL MIXTURE - 1988 JOHNSON 6
 

Early Harley Davidsons did it by making the crank pin a seperate part
from the two counter weights which went on either end of it. Held
together with *BIG* nuts on each end of the crank pin.



Me wrote:
In article ,
Brian Whatcott wrote:


I don't even think outboard two strokes are that simple. The evinrude
55HP I stripped after it threw a rod, had roller bearing mains and con
rods - like you wish auto engines had.

Brian Whatcott Altus OK


How do you install Roller Bearings on connecting rods? All the
Roller Bearings used in engines I have ever seen, were on
single cyl engine cranks that could be pressed on from each end.
I would think that any split shell Roller Bearing, would be less
robust than a regular shell bearing in the same application.

Me just wondering........

FUEL MIXTURE - 1988 JOHNSON 6
 

Me wrote in news:Me-
:

How do you install Roller Bearings on connecting rods? All the
Roller Bearings used in engines I have ever seen, were on
single cyl engine cranks that could be pressed on from each end.
I would think that any split shell Roller Bearing, would be less
robust than a regular shell bearing in the same application.

Me just wondering........


Outboards use a single-piece forged crank with split bearings out of
necessity. Jetskis, however, use whole bearings and split the crank up
into several pieces that are pressed together then pinned to hold them in
place. My 1997 3-cyl, 150hp Yamaha GP1200 twisted its crankshaft 22
degrees, which of course screws the timing all up something awful, as it
sheared the pins holding the crank together. Single piece forged cranks
are just fine with needle bearings wrapped around more solid parts....

These bearings in a 2-stroke are only there because there is no oil
available for lubricating cheaper sleeve bearings like in your car. That
would require oil pressure to keep the parts from grinding together, of
course. Outboard manufacturers don't spend a single dime more than they
absolutely must to make it to the end of the warranty period, I can assure
you. No valve train, no big alternator (a bunch of coils inside the
flywheel with magnets spinning around them like they were in the 1930's
isn't expensive, no matter what the man told you about the stator costing
$400!) I think they got rid of the points and went to a CD because
electronics is cheaper than points and machining cams.

A 2-stroke outboard is very simple, indeed.....just like a 2-stroke diesel
moving that 950' containership down the channel out in the harbor.....



--
Larry

FUEL MIXTURE - 1988 JOHNSON 6
 

On Mon, 10 Oct 2005 17:50:13 GMT, Me wrote:

In article ,
Brian Whatcott wrote:

I don't even think outboard two strokes are that simple. The evinrude
55HP I stripped after it threw a rod, had roller bearing mains and con
rods - like you wish auto engines had.

Brian Whatcott Altus OK

How do you install Roller Bearings on connecting rods? All the
Roller Bearings used in engines I have ever seen, were on
single cyl engine cranks that could be pressed on from each end.
I would think that any split shell Roller Bearing, would be less
robust than a regular shell bearing in the same application.

Me just wondering........


If I remember - they were needle bearings in half shells.
Why would split shell needles be less robust than split shell plain
bearings?

Brian W

FUEL MIXTURE - 1988 JOHNSON 6
 

maybe so but at least i dont have **** for brains.