Next message: Jeff Smith: "Re: lv-ab: more insurance, singlehanding"
Oops!!! You are absolutely right about that -- do NOT
use galvanized. The combination of diesel exhaust,
seawater, and galvanizing, does produce some sort of
nasty stuff.
Something was tickling the back of my mind when I
wrote that below, and now that you mention it, it has
come back to me -- I did NOT use galvanized, but plain
iron. So it'll rust quicker, that's ok. It's safer.
Thanks for catching that!
Dick
--- Tim Holock <> wrote:
> Dick,
>
> I'm VERY unsure about this, but when I did just
> about the same thing I was
> told NOT to use galvanized. due to deadly fumes or
> something. Maybe the
> experts could weigh in.
>
> Of course, you're still alive (we hope) so maybe
> there wasn't anything to
> it...
>
> Tim Holock
> SV Marooned, Endeavour 32
> Annapolis
>
> -----Original Message-----
> From:
> [mailto:]On
> Behalf Of Richard
> Goodwin
> Sent: Wednesday, August 25, 2004 2:11 PM
> To: Stan Wasilewsky;
>
> Subject: Re: lv-ab: Cast Iron Exhaust Repair
>
>
> I bought a used Westerbeke 30 a few years back, and
> its exhaust elbow was rotted out where the water
> intake joined it.
>
> >From boatyards and other places I got estimates
> ranging in the hundreds of dollars for replacements
> of
> various kinds, from brand new to used.
>
> But then when I actually started measuring stuff, I
> found that 2" OD iron pipe thread was what went into
> the exhaust manifold, and from there it was a simple
> matter of putting together a 10" horizontal pipe
> from
> the exhaust manifold, out to a 90 degree "street
> elbow" (male on one end, female on the other), into
> a
> T with 2" female on each end, and 1" female in the
> middle, which is where the seawater input goes, and
> then 2" pipe nipple to the rubber exhaust hose from
> there on down to the Vetus thingamajig that pumps
> the
> exhaust and water up and out.
>
> All the pipe fittings are galvanized, and cost
> around
> $20 total. For that price I can afford to replace
> them often if they rot out any faster than the $300
> ones supplied by Westerbeke.
>
> Dick
>
>
> --- Stan Wasilewsky <> wrote:
>
> > Hi,
> >
> > I have a friend who owns a 37 foot Benetau with a
> > Perkins 4-107 that has a similar exhaust elbow.
> He
> > removed the elbow and took it to a local machine
> > shop that fabricated a new one using a smaller
> elbow
> > inside the larger elbow. Both elbows were welded
> to
> > the plate/collar that fastened to the engine
> exhaust
> > manifold. A hole was drilled into the top of the
> > larger elbow and that was used to thread a section
> > of pipe (for the raw water). It worked out very
> > well for him and cost was less than $300. I will
> > say this, the local machine shop does a lot of
> work
> > for the local mariners, so he knew how to
> improvise.
> >
> > Regards,
> >
> > Stan
> > S/V Ichiban
> >
> >
> > wrote:
> > Hello All,
> >
> > I have a 4" cast iron 90: plumbing on my exhaust
> > system that has coorded thru...It seems salt water
> > comes back into the system to about this
> > point......The casting doesn't get hot when
> running,
> > the cooling water enters right above......One
> side
> > goes to the Detroit Diesel 6v53. The other side
> is
> > connected to the rest of the exhaust system with a
> > flexable rubber tube that looks not too hard to
> > remove. Once it is removed, the 1/2" hole leak
> is
> > only about 3" in the fitting so the inside is
> > acessable.
> >
> > What are my options ? Take the entire 30" snaking
> > weldment off and have it replicated ? (maybe
> $2500?)
> > Take if off and have it welded or brazed (maybe
> > $1500) ? Or maybe build up the bottom of this
> > casting with Marine Tex Maybe ($500) ? I really
> > like the Marine tex idea.....my mechanic is coming
> > by friday to take a look......
> >
> > Currently, I have stopped the sinking with some
> > really good "silicone tape", you wrap it around,
> > and it clings to itself very tightly. I came back
> > from Catalina (4 Hours) and it held, though I
> > didn't go past 65% power or so......THIS TAPE IS
> > GREAT !
> >
> > thanks for any ideas.....
> >
> > BILL
> > "Steer Clear"
> >
> > ---------------------------------
> > Do you Yahoo!?
> > New and Improved Yahoo! Mail - Send 10MB messages!
>
>
>
>
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