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

[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