please help, intake blew clamp - SailNet Community
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post #1 of 6 Old 10-26-2013 Thread Starter
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please help, intake blew clamp

hey guys/gals
started my sailboat engine ( universal m-25xpb )and the after a few seconds smoke was bellowing out of engine cover,open it and the exhaust clamp had blow apart and water was spewing all over the compartment.
now i had just replaced the clamp as the other had a crack and putting fumes in the cabin.i never noticed that it was wet? normal? and why would it blow a new clamp? head gasket? clog something?
seems it was under huge pressure?
any and all info is welcome as im stranded in Honduras and i dont have another clamp nor do i Know a competent mechanic , crazy thing is i was sailing out tomorrow.
thank you
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post #2 of 6 Old 10-26-2013
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Re: please help, intake blew clamp

Perhaps an obstruction in the exhaust system downstream of the clamp, mixing elbow clogged?, muffler plugged? crimped exhaust line from muffler to transom?

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post #3 of 6 Old 10-27-2013
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Re: please help, intake blew clamp

Perhaps the clamp gears were stripped? Hard to say without a pic of the broken clamp. Two clamps are recommended for this reason. Sorry for the trouble.

There is a tool set out there that allow one to make any size emergency clamp by wrapping wire around the hose, hooking and then twisting the wire. I've seen it demonstrated to secure a split wooden mast, its supposed to be very strong. Has to be cut off, however. I just can't find the thing at the moment. I suppose, if I was going to be out of reach of civilization, I would want the thing aboard.


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post #4 of 6 Old 10-27-2013
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Re: please help, intake blew clamp

In a pinch you can make a pretty good clamp by wrapping wire twice around the hose and twisting the ends together. Put the twist atop the standing wire where they cross. I would put two or three separate wire (clamps) on anything important. Soft iron (tie) wire works the easiest but others work. Consider it temporary due to rust and that it may cut the hose eventually.

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post #5 of 6 Old 10-28-2013
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Re: please help, intake blew clamp

Check and see if the exhaust manifold is rusted closed. Also you may want to think about double clamping teh hose.

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post #6 of 6 Old 10-28-2013
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Re: please help, intake blew clamp

Clamp-making tool that I own and use is this one

Buy ClampTite Tools and Wires

Also, the exhaust is plugged.
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