Another Big Twin Observation....

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FrankR
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Location: Florida

Re: Another Big Twin Observation....

Postby FrankR » Thu Aug 09, 2018 8:09 am

Depending on the mfg date, it could have that disasterous 303804 lip type seal that destroyed so many 1955 models. But that's an awful lot of water for that (if it is water as we suspect).

Mas
Posts: 180
Joined: Sat Mar 14, 2015 10:53 am

Re: Another Big Twin Observation....

Postby Mas » Thu Aug 09, 2018 9:17 am

Interesting !

Any chance of showing the set-up in how the hose is attached to the motors? I've got a 56 Evinrude 30 hp and might try the same experiment.

Mas

NJ-boatbuilder57
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Location: New Jersey

Re: Another Big Twin Observation....

Postby NJ-boatbuilder57 » Thu Aug 09, 2018 9:19 am

Me, too...

Chris_P
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Re: Another Big Twin Observation....

Postby Chris_P » Thu Aug 09, 2018 4:15 pm

You can do this simple or more elaborate.

Attached you will see the area you need to work on. This is for a 35hp Gale, but they are all similar. Remove this panel, plug the drain hole that goes down into the exhaust cavity (High temp silicone works), then drill/tap the panel to accept a hose barb. Re install, and run a hose from the barb to a bottle. Now, the extra fuel/oil mix that is normally dumped in the lake can be re used or recycled.

I did one set up on a '57 35hp OMC where I modified it to run on a fuel pump, but kept the pressure tank. I kept the double line as well....used the old air side as the oil return, to make it look factory still.
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Chris_P
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Re: Another Big Twin Observation....

Postby Chris_P » Thu Aug 09, 2018 4:16 pm

Always good to clean those screens while you have it apart as well!

As you can see, most are plugged solid. A tune up item often missed by mechanics.

Bill McNamara
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Location: Ontario Canada

Re: Another Big Twin Observation....

Postby Bill McNamara » Thu Aug 09, 2018 9:30 pm

That's exactly what I did on the engine ends, except I kept the original double line for fuel-air, and ran separate 3rd hoses to the clear bottles.
I also have done this to a '57 Johnson this Spring, and ran the dump hose into a regular vented 1 gal plastic gas container to which I added a 1/8th x 1/8th barbed fitting epoxied to the yellow pour spout cap.

Think I'll do the same type of receivers for the twin Javelins. While one waste jug with 2 nipples would work, this intrusion episode is showing me the advantage of being able to keep an eye out for each engine's "contributions".

Bill.

Bill McNamara
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Location: Ontario Canada

Re: Another Big Twin Observation....

Postby Bill McNamara » Thu Aug 09, 2018 9:36 pm

To Frank:
This engine bears serial # 211378 (Peterborough).
Would you have info to tell if this Canadian engine was "early" enough to have been built with that suspect lip seal?

Bill.

FrankR
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Location: Florida

Re: Another Big Twin Observation....

Postby FrankR » Thu Aug 09, 2018 10:42 pm

Sorry,, I only have the Evinrude catalog. If I am correct, Johnson identified their changes with a letter-suffix after the model number such as RD-18-S (not an actual number, I just made that up).

Bill McNamara
Posts: 202
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Location: Ontario Canada

Re: Another Big Twin Observation....

Postby Bill McNamara » Fri Aug 10, 2018 7:36 am

Frank, Both of these engines are mod# RJEL-18, is the "L" the letter suffix?
If it is, can I assume that the seal was the change from that 303804 lip seal??
Bill.

FrankR
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Location: Florida

Re: Another Big Twin Observation....

Postby FrankR » Fri Aug 10, 2018 8:00 am

No, that "L" means it left the factory as a long shaft. If there was a letter suffix, it would follow the "18". As for the rest of the question, I have no way of knowing without the parts book.


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