[C320-list] Hump Hose - Was Aqualift Muffler - Water heater

[jonvez at comcast.net]

Allan,

I looked into this option and spoke with an engineer at the company that makes the hump hose. Unfortunately the smallest one they make is 2" and my exhaust hose/muffler/exhaust elbow are 1 5/8". I did not want to try and do an adapter for this since the run is so short. I was thinking along the same lines as you. Do you have the Catalina elbow or the standard Yanmar elbow? They may be different diameters (I have the custom elbow). I did take it apart this spring and was pleased to find that it was clean and showed no signs of corrosion after about 450 hours....

Regards,

Jon Vez

-------------- Original message -------------- 
From: allan.field at comcast.net 

> I have not yet done this project yet as it still is on the Good Intentions List. 
> However, I believe that the Aqua Lift Mufflers fail due to engine vibration 
> transmitted from the engine through the lifting elbow, down the hose and to the 
> muffler. There is a device called a Hump Hose that fits between the muffler and 
> the hose. The intent is that the Hump Hose absorbs the vibration before 
> reaching the muffler. I also think that I remember seeing the Hump Hose in the 
> WM catalogue. I did take a picture of one installed on another boat and the 
> picture is in the Sea Shadow album on the C320 website. Does anyone have any 
> experience with this yet? 
> 
> The mixing elbow on Sea Shadow is about 6 years old now and probably about ready 
> to change out this winter. When I do so, I intend to install the Hump Hose at 
> the same time. 
> 
> Allan S. Field 
> Sea Shadow - C320 
> Columbia, MD 
> 
> -------------- Original message -------------- 
> From: jonvez at comcast.net 
> 
> > Ralph, 
> > 
> > You may want to look into whether a standard off the shelf muffler will fit. 
> > When (as opposed to if) mine goes, I will seriously look into whether I can 
> > retrofit a vernalift. I know someone on this list did so a while back, but I 
> > don't recall who it was. Still amazes me that a production boat builder with 
> so 
> > many hulls out there does the *one off* mufflers--and not very well...oh well, 
> > one of my few complaints.... 
> > 
> > Regards, 
> > 
> > Jon Vez 
> > 
> > -------------- Original message -------------- 
> > From: "Ralph Winkler" 
> > 
> > > Has anyone recently replaced either of these two items and where did you get 
> > the 
> > > replacements? 
> > > 
> > > Wind Dancer is a 1996 hull # 394 
> > > Aqualift Muffler: 
> > > Seaward Water heater model ?600, galvanized: 
> > > 
> > > I think I'm looking at replacing the water heater for sure this off season 
> and 
> > I 
> > > might also need to do the muffler. 
> > > 
> > > Ralph H. Winkler