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

[jonvez at comcast.net]

Scott,

You have the standard Yanmar setup. I've seen these pieces at both M-B and at boat shows. You can also see them on Torreson Marine's web site I believe. What parts catalogue are you looking at?

I agree re: the pics. Would be very helpful as there is quite a bit of variation among the boats...

Regards,

Jon Vez

-------------- Original message -------------- 
From: Scott Thompson <sthompson at toad.net> 

> I've been wondering about this and recently posted a photo of my exhaust 
> elbow so I could ask the question. Is this one the standard Yanmar version? 
> 
> http://www.catalina320.com/gallery/view_photo.php?set_albumName=album37&id=IMG_4 
> 976 
> 
> If so then I'm a bit puzzled because this doesn't look anything like the 
> "mixing elbow" listed for the 3GM30F in the official Yanmar parts catalog. 
> 
> While I'm asking questions: Here's a photo of one of my engine mounts. 
> I'd like opinions on whether this is a healthy mount or in need of 
> replacement on my 1999 boat. The forward edge looks mighty close to 
> making contact between the upper and lower metal parts, which can't be good. 
> 
> http://www.catalina320.com/gallery/view_photo.php?set_albumName=album37&id=IMG_4 
> 973 
> 
> It would be a great idea if we had more photos of similar parts across 
> boats of different vintages to help owners understand whether their own 
> boat is similar / different or good / bad relative to others. 
> 
> 
> jonvez at comcast.net wrote: 
> > 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 
>