I'm interested in the new Merc 9.9 four stroke at 84# for my dinghy.
They are supposed to lie on one side or vertical so all the oil doesn't
run out. My dinghy is stored on Weaver snap davits so it is rotated up
90 degrees out of the water when travelling. If I leave the outboard on
the dinghy it will rotate up onto the side it is supposed to be stored
on. Neat.

So what happens if I run into a few waves and the boat (36' trawler)
bounces around a bit, roll, pitch or yaw? Will oil run out? Or should I
just stick with a two stroke.

I could get that Weaver thing that pivots the motor vertical when you
crank up the dinghy, but it costs too much and it is UGLY.

Capt. Jeff

Tamaroak wrote in news:iKWdnTbwnYPYP9ffRVn-
:

just stick with a two stroke
We're running a Nissan 4-stroke 5hp on a FoldaBote for a dingy on
Lionheart. It also forbids you from just laying the motor on the dock the
way you could the old 2-stroker, which didn't care.

Couple that with all the oil changing maintenance of it, and I wish it was
a 2-stroker. (Where do you put waste oil from the 4-stroker in a strange
place away from home?) What nonsense for a little dingy motor. Mix the
oil and gas and the two stroker is ready to ride. What hours is it going
to have on it in 10 years? 10? 20? Dingys make little short runs only
when you're anchored out or want to go to the beach. I doubt any cruiser
ever wore out a two stroke engine, just because it was a 2-stroke engine.

Greenies aside, 4-stroke engines are a pain in the ass when you have to
change the oil and be careful what "side" you sit them on when you pull
them off the little boat. What happens when you tilt them up and they lay
over on the wrong side? The oil runs out and makes the greenies' point of
4-stroke conversion moot....

Get the two stroke and change the spark plug every few years. Oh, and
while you're looking, try to find one with a DIAPHRAM carb! Float carbs
also stink in a tiny portable engine. The gas in the float bowl either has
to be run dry before storage or it will evaporate in storage and turn to
shellac plugging up all the jets and a real pain to clean out. Diaphram
carbs don't store gas in an open pot and you can empty what gas is left in
them in a few seconds by just shutting off their gas supply. I don't know
if you can still even buy one with a diaphram carb, now. But it's worth a
look....

Wanna make the 2-stroke last longer? Mix the TC-W3 oil at 25-30 to 1
instead of the 50:1 or 100:1 "they" tell you to. After all, "they" are
trying to sell more engines! Yep, it smokes a little. 2-stroke engines
properly lubricated DO smoke. They're burning lube oil, you know! No
smoke, no lubrication. When I sold my 1997 Sea Ray Sea Rayder jetboat with
the 2-stroke 175hp V-6 in it, the 25:1 lubrication kept the rings and
cylinder walls looking like new, even though it had nearly 1000 hours on
the hourmeter! The guy who bought it from me is still premixing oil at
25:1 and it runs great! I removed its crappy plastic oil injection after
getting the 2nd recall notice from Mercury. Premixing a 2-stroke gas with
oil makes SURE the expensive engine gets proper lubrication....

Stand by....I'm gonna get lambasted in the replies...(c;

PLEASE don't crosspost to the rec.boats flamefest....please?

"Tamaroak" wrote in message
...
I'm interested in the new Merc 9.9 four stroke at 84# for my dinghy. They
are supposed to lie on one side or vertical so all the oil doesn't run
out. My dinghy is stored on Weaver snap davits so it is rotated up 90
degrees out of the water when travelling. If I leave the outboard on the
dinghy it will rotate up onto the side it is supposed to be stored on.
Neat.

So what happens if I run into a few waves and the boat (36' trawler)
bounces around a bit, roll, pitch or yaw? Will oil run out? Or should I
just stick with a two stroke.

I could get that Weaver thing that pivots the motor vertical when you
crank up the dinghy, but it costs too much and it is UGLY.

Capt. Jeff

I would think that a motor stored in the horizontal position off your
inflatable (in the vertical position) would be ugly.

Why not buy a swivel bracket to mount on the inflatable transom that would
allow you to store the motor and inflatable in the vertical position off the
swim platform?

http://www.adventuremarine.net/dinghy-accessories.cfm

No one ever said boating is cheap. ;-)

wrote in :

My merc 60 was shipped "wet" and ready to run. (laying face down in
the crate). Nothing leaked out. These things are pretty much sealed


I don't think "leaking" is the problem. Inside the engine, if you tip it
up so the oil sits atop the piston, the only thing that keeps the oil from
draining INTO the combustion chamber is the rings, which do not seal
completely in any engine. They're not made to prevent oil flow past them
for weeks, just milliseconds.

What do you suppose would happen if oil leaked from under the piston to
fill or partially fill the combustion chamber when the engine was started?
(Flashback to watching deck crews manually pulling props slowly on WW2
carriers when airplanes had radial engines with pistons pointing down to
purge them of oil before cranking the engines.)

Unfortunately, these cheap engines don't have DRY SUMPS like an old
Harley....Storing oil in the crankcase was ok until someone turned it OVER!

"Larry W4CSC" wrote in message
...
wrote in
:

My merc 60 was shipped "wet" and ready to run. (laying face down in
the crate). Nothing leaked out. These things are pretty much sealed


I don't think "leaking" is the problem. Inside the engine, if you tip it
up so the oil sits atop the piston, the only thing that keeps the oil from
draining INTO the combustion chamber is the rings, which do not seal
completely in any engine. They're not made to prevent oil flow past them
for weeks, just milliseconds.

What do you suppose would happen if oil leaked from under the piston to
fill or partially fill the combustion chamber when the engine was started?
(Flashback to watching deck crews manually pulling props slowly on WW2
carriers when airplanes had radial engines with pistons pointing down to
purge them of oil before cranking the engines.)

Unfortunately, these cheap engines don't have DRY SUMPS like an old
Harley....Storing oil in the crankcase was ok until someone turned it
OVER!


Hey, thanks! I love to learn stuff about engines.

I bought the very engine your describing and i love it. It is quiet and has
not leaked anything yet, of course when I lay it down I do make sure it
rests on the tiller side. I would recommend this one!

"Tamaroak" wrote in message
...
I'm interested in the new Merc 9.9 four stroke at 84# for my dinghy. They
are supposed to lie on one side or vertical so all the oil doesn't run
out. My dinghy is stored on Weaver snap davits so it is rotated up 90
degrees out of the water when travelling. If I leave the outboard on the
dinghy it will rotate up onto the side it is supposed to be stored on.
Neat.

So what happens if I run into a few waves and the boat (36' trawler)
bounces around a bit, roll, pitch or yaw? Will oil run out? Or should I
just stick with a two stroke.

I could get that Weaver thing that pivots the motor vertical when you
crank up the dinghy, but it costs too much and it is UGLY.

Capt. Jeff

On Wed, 30 Mar 2005 06:57:39 -0600, Tamaroak
wrote:

I'm interested in the new Merc 9.9 four stroke at 84# for my dinghy.

I had three of these mounted on a 14' Jon boat. It was fun to let the
grandkids play with.

"HaKrause" wrote in message ...
I'm interested in the new Merc 9.9 four stroke at 84# for my dinghy.

I had three of these mounted on a 14' Jon boat. It was fun to let the
grandkids play with.

You're a liar and a bad and less than funny one at that!

CN