[C320-list] 1995 C320 Aqua Lift Muffler & Elbow

[Pat Moriarty]

I did basically the same thing on 1994 boat. I think the bottom 
flexed too much with exhaust pressure and caused the seam failure. 
Repaired several times and finally got a new one.

Pat #130

At 09:12 PM 12/2/2009, you wrote:
>Rollie:
>
>The muffler was designed to be held down on only three corners.  I would
>not suggest your modifying it!  Our 1994, #150 started leaking at the
>bottom seam about 6 years ago.  I had it repaired twice by a fiberglass
>shop and I did a repair once myself.  I think part of the problem is that
>vibration between the engine and the fixed muffler is what caused the
>seperations.  I think by your tightening the screws, you might be adding
>to the problem.  On the replacement muffler, I did not attach it to the
>platform it sits on.  The two hoses attached to it hold it in place.  I
>placed a thin foam pad underneath the muffler to avoid abrasion/chaffing
>of the muffler or platform.
>
>The hose you describe with the 3" bulb in it I think is designed to
>absorbe some of the vibrations.  I had looked at them when I made the
>replacement, but decided to leave the muffler "float" to avoid putting
>stress on the muffler.  I believe it was referred to as a Hump Hose.
>
>Dave Gleason
>Proud Mary, #150
>
>
>On Wed, 2 Dec 2009 22:47:58 +0000 (UTC) argates2nd at comcast.net writes:
> >
> > Our 1995 model #182 has only 3 screws holding down the aqua lift
> > muffler? The aft port corner has no hole and no screw. Is that
> > normal?
> >
> > Should I try to add a screw to that corner by drilling a hole and
> > self threading with the screw?
> >
> > I may have some leaking from that corner, although the other 3
> > screws were not very tight and I tightened them today but did not
> > run the engine afterwards.
> >
> >
> > Our Perkins does not seem to have an exhaust elbow like those
> > described in recent e-mails? The closest thing to it is a 9 inch
> > pipe with a 3" bulb in the center where a 60 degree downward curve
> > exists coming off the aft end of the engine, labeled "exhaust
> > outlet" in the Perkins manual, which clamps to the reinforced hose
> > before the muffler.
> >
> > Is that the elbow that should be removed from the back of the engine
> > and checked for carbon build up & deterioration?
> >
> > Our Perkins engine has 570 hours.
> >
> > Thanks, Rollie Punta Gorda, FL
> >
>
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Pat Moriarty
PSI Urethanes Inc
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