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74 evinrude 85

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Dirtyryder68 View Drop Down
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    Posted: 09/28/2017 at 1:45am
I have a 74 model evinrude outboard that was givin too me.
I got it running my question is it's spitting water out of what looks like to be weep holes and not the holes higher up on the motor. Is that normal it doesn't seem to be getting hot or anything runs good.
I pulled the bottom end the impeller looks like to be in good shape not burnt or anything. So I put it back together any ideas? Any help is appreciated I tried to download some pics but it won't let me. Thanks
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Jakerichards1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jakerichards1 Quote  Post ReplyReply Direct Link To This Post Posted: 09/28/2017 at 11:49am
I run old Evinrude motors also. Welcome to a good old reliable platform.

From my experience when the motor is on Muffs, the garden hose water pressure will push water out of all sorts of places in the lower end of the motor. I have at the moment on my pontoon boat a Johnny-rude multiple part source combination of V6 contraption. The lower and end midsection is mid 70s and looks almost identical to the late 80s v-4 that I have also. It seems that water wants to squirt out of all the joints on the bottom and but water pressure still gets to the motor. And easy test you can do while running in the driveway is to put your hand on the top of each head after it has been running a while. If you can leave your hand on there forever it's running to cool. it should be hot enough that you want to pull your hand away after about four seconds.

Unless you know the exact history of maintenance on this motor I suggest a water pump rebuild and also thermostat exchange. My very good running 88 special broke a ring I believe due to carbon buildup on the rings and then catching a ring on the port because of that excess carbon. I had just found out that there was a jam and the thermostat for that head which allowed it one side to run run cool for a long time. Shortly after the new thermostat that head had the ring that caught and lost compression.

My current johnny rude v6 had no thermostat in it when I got it. Cooler it's not better; operating temperature is designed for a reason. If you had an infrared thermometer it should read very similar temperatures on both heads. I think 120-140 is what I remember. Melt wax sticks is the by the manual omc way to test.

Also while running water on mine squirts out between the joint of Lower unit and midsection. I acutually use a 5" extension to make a 25" lower unit.

I would bet yours is fine. But don't run old water pumps or old thermostats. Death of a good motor IMHO.

I am not an omc certified mechanic. Just lots o experience with lots of stuff.
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Dirtyryder68 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dirtyryder68 Quote  Post ReplyReply Direct Link To This Post Posted: 10/01/2017 at 2:28pm
Ok thanks I'm new to boats it doesn't seem real hot or anything both heads feel the same. Just didn't want to burn it up or anything.
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