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

[jonvez at comcast.net]

The way to tell is if you have a one piece stainless that is wrapped in aluminum foil insulation you have a Catalina version--which has to be sent back to Catalina to fabricate a new one. If you have a standard Yanmar, it has 3 pieces--a riser that comes out of the engine, a collar that allows for adjusting the angle and finally the 'elbow' which is an upside down 'U' shape. These pieces are made of a bronze alloy. I will take a picture of mine this weekend and post....I'm not sure if the Yanmar and Catalina versions have the same diameter or not. If you can manage a hump, I think it would be a great upgrade. I'm also looking into replacing my exhaust when it's time with the Yanmar version, but I'm not sure if the alignment will allow me to do this. Will have to talk with Catalina as Mack-Boring isn't familiar with the OEM version....

Regards,

Jon

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

> Jon - I don't yet know if I have a Catalina or Yanmar elbow and am not sure how 
> to find out other than removing the current elbow and taking it to my local 
> Yanmar dealer when ordering a new one. But that is disappointing to hear that 
> the hump hose may not fit. If I do this over the winter, I'll try and make an 
> article out it for Mainsheet and/or the website. 
> 
> I just went over 500 hours on my engine and make sure that it runs at 3000 rpm's 
> for at least 5 minutes everytime I take her out, as recommended by Mack Boring. 
> It will be interesting to see if the elbow is as clean as is yours. 
> 
> Allan S. Field 
> Sea Shadow - #808 
> Columbia, MD 
> 
> -------------- Original message -------------- 
> From: 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