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40cpe · 08-06-2011, 01:19 PM

They can make aluminum flues wider (ex; 1 1/4" vs 3/4" on copper) giving much more flat side area to attach cooling fins. There is a taper at each end of any tube that is not cooling much because of no fin attachment.

08-06-2011, 01:19 PM	#3
40cpe Senior Member Join Date: May 2010 Location: Star, MS Posts: 4,162	Re: aluminum radiators They can make aluminum flues wider (ex; 1 1/4" vs 3/4" on copper) giving much more flat side area to attach cooling fins. There is a taper at each end of any tube that is not cooling much because of no fin attachment.