Lots of people here use National Marine Exhaust for replacement risers. They are located in Marysville Washington. High quality work. https://www.nationalmarineexhaust.com/
Douglas Mountjoy 1988 C&C Landfall 39 sv Rebecca Leah On Sat, Jun 7, 2025, 06:21 David Knecht via CnC-List <cnc-list@cnc-list.com> wrote: > In my raw water cooling issue that you all have been helping me with, I > now know that water comes out of the heat exchanger at a high rate, but > little is coming out of the exhaust riser. Thanks to all for helping do > the right tests to isolate the problem. I presume that means that the > riser is blocked in some way. I know that this is a frequent occurrence on > Yanmar's, but I have not heard of it on Universals (M4-30). Have others > had to deal with this? I have not been able to completely remove the riser > yet to see what is going on inside (one stuck nut). > > 1. Have others had to replace the riser on a Universal? > 2. Can they be unblocked or does it need replacement? > 3. I have not yet found a replacement online, but have multiple queries > out to Universal parts companies. It looks like it may be hard to find a > replacement. > 4. I see on the Catalina site many people cobbling together a riser using > black iron pipe parts. What they are building would not fit in my boat so > I am wondering how others dealt with this issue. > > David Knecht > S/V Aries > 1990 C&C 34+ > New London, CT > > [image: pastedGraphic.tiff] > > Your contributions help pay the fees associated with this list and help to > keep it active. Please help by making a small contribution using PayPal > at: https://www.paypal.com/paypalme/stumurray All contributions are > greatly appreciated.
Your contributions help pay the fees associated with this list and help to keep it active. Please help by making a small contribution using PayPal at: https://www.paypal.com/paypalme/stumurray All contributions are greatly appreciated.
