I replaced mine after discovering a pinhole in the mixing elbow. It was corroded so badly that I couldn't remove it from the piece it was attached to, even heating it with a torch and using a five foot piece of pipe on a wrench for leverage. I removed both pieces together (easy) and replaced them with cast iron items. I was able to salvage the nipple.
Alan Bergen 35 Mk III Thirsty Rose City YC Portland, OR On Sun, Jul 16, 2023 at 4:13 PM Jeffrey A. Laman via CnC-List < cnc-list@cnc-list.com> wrote: > Hello Yanmar 3GM owners, > I need to replace the U-type mixing elbow and exhaust elbow assembly on my > 3GM 20hp. If this topic has been discussed here previously, my apologies > -- I attempted a search of the archives but not sure I am conducting the > search correctly. > There seems to be debate about stainless steel vs cast iron and welded SS > vs cast SS. There is a complete SS kit at > https://hdimarine.net/product/gm-kit/ > <https://urldefense.com/v3/__https://hdimarine.net/product/gm-kit/__;!!LIr3w8kk_Xxm!ozyK7o3KtYwEX5DYMyeNOi03rZ8K94METHx-eq1MMy9vqY9QMFAnou7HaYgwebF2OFscw-pgKtCsJwbrSsL8XNQ$> > that appears to be high quality and reasonably priced (for a boat > part...). I will be grateful for any advice on source for the exhaust > elbow/mixing elbow and cast iron vs SS vs cast SS. Also, advice regarding > the replacement job as I will do this myself. Thanks. > Jeff Laman > 1981 C&C34 Harmony > Ludington, MI > Please show your appreciation for this list and the Photo Album site and > help me pay the associated bills. Make a contribution at: > > https://urldefense.com/v3/__https://www.paypal.me/stumurray__;!!LIr3w8kk_Xxm!ozyK7o3KtYwEX5DYMyeNOi03rZ8K94METHx-eq1MMy9vqY9QMFAnou7HaYgwebF2OFscw-pgKtCsJwbr2EdZUJA$ > Thanks for your help. > Stu >
Please show your appreciation for this list and the Photo Album site and help me pay the associated bills. Make a contribution at: https://www.paypal.me/stumurray Thanks for your help. Stu
