I say go black iron ... unless you really like zinc oxide fumes ... and 
flu-like symptoms.

From: bobmor99 . 
Sent: Saturday, February 22, 2014 7:30 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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