Bob
I replaced one on my C&C 27 that had an A4 engine. I used stainless steel threaded pipe and elbows, all wrapped with several layers of a proprietary heat blanket that I had access to because I was studying that blanket material for fire safety applications on warships. I think it might be a good idea to use more than a wrap of asbestos tape for hot pipe lagging and I definitely recommend that you spend the extra cash and go with stainless pipe and elbows. By the way, I thought asbestos products were no longer available for such use. _____ From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of bobmor99 . Sent: February 22, 2014 11:31 PM To: cnc-list@cnc-list.com 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.
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