Re: [OMC-Boats] Cooling issue

The water pump impeller is simply forcing water into a sealed box in the intermediate housing with the two outlets at the top for the hoses.  If water is flowing to one side only, it could be more pressure is required on one manifold side than the other and that the pump is not pumping sufficient amounts of water to overcome that.  It could also suggest that there is a blockage but I would first validate the pump is properly working and pumping sufficient water before worrying about that. 
 
-Bill
Dallas, TX
1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
http://www.photobucket.com/evinrude_explorer

--- On Mon, 8/31/09, Justin DeSantis <duc1098desmo@...> wrote:

From: Justin DeSantis <duc1098desmo@...>
Subject: Re: [OMC-Boats] Cooling issue
To: "Evinrude & Johnson Boats of the 1960's and 70's" <omc-boats@...mate.com>
Date: Monday, August 31, 2009, 8:58 PM

Ok, so on tomorrows agenda, pick up a tub. Let me ask you this, if I'm
getting flow on at least one side, that would mean that my impeller is
working to some extent, right? No way a bad impeller could only flow
to one side, really. I could see weak flow to both sides but not good
flow to one side and no flow to the other. The previous owner did say
that once a few years ago it started running hot, and he took the
manifolds off and found they were clogged with acorns or something.
But he said that hasn't happened since. I guess I better plan to get
up early tomorrow so I have time to do all this and still have a shot
at getting it in the water.

On Mon, Aug 31, 2009 at 9:46 PM, BLDFW<bldfw@...> wrote:
> You know, I tried the hose/muff route and had the same problem with
> inconsistency in water flow.  The problem is that if you have too much hose
> pressure, you can't be sure the water is circulating because of the pressure
> or not.  Too little pressure means not enough water.  Either way, your're
> not really validating the impellers functionality.
>
> Instead I picked up a 30gal tub from the local Walmart for about $9.00 and
> used that so the waterpump can pull the water at it's own pace.  I jack the
> trailer up sufficient that the skeg is within about 1/2" of the bottom of
> the tub and then fill it leaving the hose running at a pace that can keep up
> with the splashing.  It helps to quiet the outdrive too.  Don't put it in
> gear as it will spin out about half the water in a flash!  If you need to do
> that, make sure the hose water is on faster and the engine is idling only!!
>
> The squealing in the front could be due to the fact that no water is passing
> through it.  I would not run it for more than a minute unless the clear
> hoses show that water is circulating.  That is the first thing I checked
> everytime I start mine up.  I run back and look to be sure the hoses are
> solid water streams.  If both hoses are not solid colums of water, I'd
> suspect you'll have to pull the pump to check it's condition.  If it looks
> fine then likely you have a problem with your seals allowing air to enter
> the system.
>
> -Bill
> Dallas, TX
> 1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
> http://www.photobucket.com/evinrude_explorer
>
> --- On Mon, 8/31/09, Justin DeSantis <duc1098desmo@...> wrote:
>
> From: Justin DeSantis <duc1098desmo@...>
> Subject: Re: [OMC-Boats] Cooling issue
> To: "Evinrude & Johnson Boats of the 1960's and 70's"
> <omc-boats@...>
> Date: Monday, August 31, 2009, 8:26 PM
>
> Oh no problem Bill, I took no offense. And thanks for the picture, it
> confirms that what I did was correct. But it leaves me with a big
> question. With the garden hose hooked to the boat, and the engine
> running, should I have flow through both of those clear hoses? Because
> I didn't. On the drivers side, I had good constant flow. On the
> passenger side, I had no flow. It looked like water was "percolating"
> for lack of a better word. It looked just like the glass top of and
> old coffer percolator. You could see water burbling up out of the
> intermediate housing, but it never filled the hose. Just sort of
> perc'd in the first 2 inches or so of line. So do I have an issue? I
> tried revving it to about 1500 in neutral, but no change in the lack
> of flow on the passenger side hose. I let it idle a few minutes, maybe
> 5 or a bit more,  and the flow never improved. I did start hearing a
> squealing noise from the fan area that I'm currently praying is worn
> belt and not an impending seizure.
>
> So what say the wise old list? Do I have a problem? And if so, what
> could possibly cause this?
>
>
>
> On Mon, Aug 31, 2009 at 7:57 PM, BLDFW<bldfw@...> wrote:
>> Sorry Justin.  Hope you didn't take that wrong.  I wasn't suggesting you
>> should check the archives.  I was commenting on the fact that as a new
>> member you don't have access to anything prior to your arrival.  You have
>> to
>> save your own pertinent emails to serve as your own archive.  Without an
>> archive, to new members, we have to often have to repeat facts already
>> discussed.  No biggie.  You can always learn a new nugget when something
>> gets reiterated.
>>
>> I attached a pic of the clear hoses I put on my boat.
>>
>> -Bill
>> Dallas, TX
>> 1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
>> http://www.photobucket.com/evinrude_explorer
>>
>>
>> --- On Mon, 8/31/09, Justin DeSantis <duc1098desmo@...> wrote:
>>
>> From: Justin DeSantis <duc1098desmo@...>
>> Subject: Re: [OMC-Boats] Cooling issue
>> To: "Evinrude & Johnson Boats of the 1960's and 70's"
>> <omc-boats@...>
>> Date: Monday, August 31, 2009, 5:40 PM
>>
>> Please excuse me. I didn't realize there was an archive. I'm looking
>> through it now, but it's slow going for lack of a search function. But
>> I am looking. Just so I'm sure we're talking about the same hoses, do
>> you mean the 4 hoses that go from what looks like the thermostat
>> housing to the manifolds? When you said rear of the manifolds, I got
>> confused. You mean the end of the manifolds closest to the front or
>> rear of the boat? The only ones I'm seeing are the 4 towards the end
>> of the manifold facing the bow of the boat.
>> Does that make sense?
>>
>>
>>
>> On Mon, Aug 31, 2009 at 5:58 PM, BLDFW<bldfw@...> wrote:
>>> Would be nice if we had some archives we could refer to but at the risk
>>> of
>>> repeating a suggestion, you might consider installing clear hoses that
>>> feed
>>> from the internediate housing to the rear of the exhaust manifolds.  As
>>> long
>>> as those stay full of water, you should be good to go!  If they don't,
>>> you
>>> know you have an impeller problem.
>>>
>>> -Bill
>>> Dallas, TX
>>> 1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive
>>> http://www.photobucket.com/evinrude_explorer
>>>
>>>
>>> --- On Mon, 8/31/09, Justin DeSantis <duc1098desmo@...> wrote:
>>>
>>> From: Justin DeSantis <duc1098desmo@...>
>>> Subject: [OMC-Boats] Cooling issue
>>> To: "Evinrude & Johnson Boats of the 1960's and 70's"
>>> <omc-boats@...>
>>> Date: Monday, August 31, 2009, 4:44 PM
>>>
>>> Let me bounce this issue off the wise old list.
>>>
>>> So I finally figured out which hole in the outdrive is the "pisser"
>>> hole. It's directly under the plate that covers the outdrive pivot on
>>> the drivers side of the boat. Here's my issue. I have no water coming
>>> out of it. As in none. I do have a slight dribble coming out from the
>>> cover above the hole. Just a real slow drip. Easy fix. But, the lack
>>> of water through the tell tale hole bothers me. Can it just be
>>> clogged? I ran the boat on the hose for about 5 minutes, maybe a
>>> little more. No water. Didn't seem to be over heating. I can get the
>>> IR thermometer out and take some readings to be sure.
>>>
>>> My question is this, I wanted to take this thing to the river tomorrow
>>> for a test run. Before I go, I want to make sure I have water flowing
>>> where I should. Is there a way to double check the "tell tale" hole?
>>> Someplace else I can look for flow? Maybe pull a hose?With my IR
>>> thermometer, where should I take readings and what should they be?
>>>
>>> I can tell you this, there is 2 cooling hoses going to each side of
>>> the engine. On each side, one was hot, the other was cooler. Is this
>>> significant?
>>>
>>> I'm know if I don't have flow that impeller is already garbage just
>>> from the running I've done to tune it up. Which went well. it's purrs
>>> and idles smooth as can be. But, if water wasn't flowing, wouldn't I
>>> have noticed it over heating by now?
>>>
>>> Any input would help me avert a meltdown. As always, thank you all!
>>> _______________________________________________
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Received on Monday, 31 August 2009