Mailing List flyrotary@lancaironline.net Message #48645
From: kevin lane <n3773@comcast.net>
Subject: 409/304/321 vs .065/.080
Date: Mon, 12 Oct 2009 12:37:21 -0700
To: flyrotary <flyrotary@lancaironline.net>
in searching for 180 elbows for my exhaust I'm finding choices of - 180 degree /.065 wall/ 304  ($30 or $72),
180 with .080 wall, but 409, 
90's, sch5 (.080 wall) in 304
180, .065 wall, 321,  $112(?) [burns]
 
I am planning to use  a chopped off stock renesis manifold and was looking into using a 180, rather than the swirl pot like Dennis did [since hiring a welder offsets a lot of make-it-yourself savings].  my question is how important is wall thickness vs. alloy?  will a 321 at 16 gauge perform as well as the 304/.080 plus weigh a lot less?  or will it have a short life?     kevin
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