RE: [omc-boats] Tuning engine out of the water?

I have never tried this, and It may be a totally stupid idea - but I
have often wondered If a person couldn't just use a plastic 30-gal
garbage can full of water as sort of a tank to run an engine in.
wouldn't that work?

-----Original Message-----
From: owner-omc-boats@... [mailto:owner-omc-boats@...]
On Behalf Of Glenn Halweg
Sent: Monday, June 26, 2006 10:57 PM
To: omc-boats@...
Subject: Re: [omc-boats] Tuning engine out of the water?

On the subject of tuning out of water, it only takes 5 seconds to
destroy
the impeller. Either method OMC adapter or radiator flush adapter will
work
satisfactorily. If you have engine overheating problems while running on
a
hose there is no way I'm aware of to check impeller operation. To check
the
impeller have the boat in the water or the drive unit submerged. You
remove
the hoses running from the intermediate housing to the thermostat
housing
one at a time. You should have approximately one gallon flow in 30
seconds
at idle. Of course if you have a 4 cylinder engine there is only one
hose.

----- Original Message -----
From: <lib1@...>
To: <omc-boats@...>
Sent: Monday, June 26, 2006 6:31 PM
Subject: Re: [omc-boats] Tuning engine out of the water?

> RE: Water adapters: Tempo Products used to make a spring loaded
adapter
> that allowed a graden hose to supply water to the sterndrive water
pickup,
> just aft of the prop. These are virtually unobtainable, unless you
lucked
> into somebody's NOS. OMC also made a bolt on hose adapter, that
replaces
> one of the end-caps. These are more plentiful than the Tempo-style but

> still fairly expensive (used or new).
>
> I like the radiator flush idea, but have never tried it. Seems like a
> sensible, affordable approach.
>
> Of all the precautions listed, the most important one is never start
the
> engine dry. Even for 10 seconds. The 1200 -1500 max RPM while on
> "artifical" water is OK, but some times you're going to blip the
throttle
> to check various enginme functions. The over-heating of "out-of-water"

> shift coils is overly cautious. They just don't get very hot. Unlike
your
> coil ballast resistor if you leave the key on very long without the
engine
> running.
>
> ----- Original Message -----
> From: "Ethan Brodsky" <brodskye@...>
> To: <omc-boats@...>
> Sent: Monday, June 26, 2006 9:46 AM
> Subject: Re: [omc-boats] Tuning engine out of the water?
>
>
>> On Sun, 25 Jun 2006, Tom Kennedy wrote:
>>> OK I've got another question...when I bought my boat (68 Sportsman
155),
>>> it had been sitting for a number of years outside without being
prepared
>>> for storage. To make a long story short, I'm rebuilding the carb
among
>>> a bunch of other things. I don't have access to water where I can
>>> tinker with the engine for an extended period (public access nearby
is
>>> all). SO is there any safe way I can run the engine/drive out of
the
>>> water while I tune/time it? There is no garden hose adapter (can
this
>>> be purchased and fitted?) and the universal earmuff-style garden
hose
>>> adapters don't work on these things.
>>> What to other landlocked owners do when they need to run the engine
for
>>> repairs? Any advice is greatly appreciated!
>>
>> I've bought a plastic "radiator flush fill adaptor" for $3 from an
auto
>> parts store and installed it in one of the hoses running from the
>> intermediate housing to an exhaust manifold. It's a "Y" that allows
>> you to hook up a garden hose and pump water directly into the coolant
>> system, into effectively the same spot as the OEM flush adaptors
>> (mentioned
>> by others).
>>
>> I'm always concerned about adjusting the flow correctly - too little
>> and you might starve the pumps, no much and the pressure might blow
out
>> seals. I've never been sure how to do this properly, but I try to
>> adjust the valve so that I have a little water back-flowing out
>> the pickup during operation. Due to the restriction in the flush
>> fill adaptor I have, this is almost wide-open on the garden hose,
>> but an unrestricted adaptor would allow more flow. Or maybe this
>> isn't something to worry at all - I don't know.
>>
>> The service manual also cautions against running the engine at high
power
>> on a flush adaptor (though without resistance, you can't dissipate
much
>> power anyway), and also against leaving it in gear for long periods
of
>> time
>> (since the shift solenoids are water-cooled through immersion of the
>> lower
>> unit).
>>
>> Ethan
>>
>> --
>> Ethan Brodsky
>> UW FutureCar Team Paradigm: Two-Year FutureCar Challenge Winner
>> UW-Madison Clean Snowmobile Team: Winner of the 2004 SAE CSC
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>>
>>
>
>
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Received on Tuesday, 27 June 2006