Yeah this was mine earlier this year. https://drive.google.com/folderview?id=1aC6-4V8P3BufZhZsusYFmMlmHknk-Ftv
The rust blisters were still holding back a majority of the exhaust and water. The entirety of the hole seen in the pictures occurred while I was wrangling the hose off. I can't recall who manufactured my replacement but it is SS, not polished, and available on ebay. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Sun, Feb 17, 2019, 1:40 AM sender via CnC-List <cnc-list@cnc-list.com> wrote: > I removed for inspection the exhaust mixing elbow on my Yanmar 3YM20. I > was glad I did. It was heavily corroded on the inside and the iron was > extensively deteriorated. The engine is 9 years old and runs in cold, salt > water. > > We have a band saw at my work, when the blade is needs replacement, I will > run it through to show how bad it is and post a pic. > > If a mixing elbow rots right through it can spill raw water back into the > exhaust manifold and wreck the engine. > > I decided to try a 316 stainless aftermarket elbow mad by HDI marine, > available on their website. I was a little hesitant, I usually spend the > extra and go OEM, plus I've had a few disappointments with aftermarket > parts online. > > I'm happy with the quality of the part, it's a close to exact match to the > original Yanmar one, except the HDI doesn't have the oddly placed frost > plug the Yanmar has (the frost plug is at the very top, which means the > elbow would have to be nearly full of water when it freezes for it to > pop...?). It's a nice casting, lots of weight and the interior of it > looks very good quality. Too bad the did straight BSP instead of NPT > threads on both the water inlet and exhaust outlet. The Groco "full flow' > 1 1/4" pipe to 1 1/2" hose barb fitting isn't available in BSP. > > I assembled it with a good dose of nickel anti-seize for stainless, and > will make it a point of disassembling it annually for inspection. > > Pictures: https://photos.app.goo.gl/RnNuMKzVZrFbjNKS7 > > Eric > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
