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Subject: Re: TWL: Exhaust rubber or fiberglass
From: Bill Martin (Martin_WJ@XXX.XXX)
Date: Thu Jan 03 2002 - 13:00:22 EST
>Fiberglass exhaust tubing works fine for straight runs, is cheaper than
>rubber, and will probably last longer....Both, of course, are only for
>water cooled exhausts.
I'm unfamiliar with this Mark. Is the fiberglass just a simple pipe or is
it a double walled coaxial setup? Or something else? How thick are the walls?
The exhaust on my 17 year old starboard engine needs to be redone at some
point. It's a double layer rubber pipe arrangement that was apparently run
without water at some point (impeller failure?) and the inner pipe over
heated, expanded, buckled in and closed off about half of the diameter of
the pipe. It still works, but it's on the repair list.
What happens if you accidentally run your fiberglass section without
cooling water during a failure? Will it pass enough heat through the walls
to set the wood stringers on fire? Or set the fiberglass on fire? Or is
it sufficiently insulated somehow to withstand a failure?
Thanks...
Bill Martin
Telegraph Hill
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