Use black iron pipe. Zinc gives off nasty fumes the first few hours that are poisonous. There is actually something like "welder's flue" you get from breathing it. I usually plan on getting 4 years or so out of the pipe before I take it off and check it.
Joe Della Barba Coquina C&C 35 MK I From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Gary Nylander Sent: Wednesday, February 26, 2014 3:02 PM To: cnc-list@cnc-list.com Subject: Re: Stus-List Exhaust Riser Replacement My boat came with a riser made of non-galvanized pipe, it lasted about 18 years with me and I don't know how many more with the PO's. I replaced it with another. Gary 30-1 ----- Original Message ----- From: bobmor99 .<mailto:bobmo...@gmail.com> To: cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com> Sent: Saturday, February 22, 2014 10:30 PM Subject: Stus-List Exhaust Riser Replacement ~5 years ago Ox's ol' Onan waterlift muffler rusted out. I replaced it with a (Vetus?) fiberglass unit and had to replace the exhaust riser in the process. Being thrifty, I went with Home Depot 1.25" galvanized pipe and a wrap of asbestos tape. Well, five years later (last week), Ox's exhaust riser collapsed. FWIW, most of the disintegration was toward the exhaust manifold. I'm thinking of staying with cheap galvanized pipe but this time painting it with a high-temperature paint inside and out. Opinions or predictions? Bob M Ox 33-1 Jax, FL P.S. The waterlift muffler is fine. ________________________________ _______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com<mailto:CnC-List@cnc-list.com>
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