Doug and Patty wrote:

 I read you every day . Lots of good stuff. What would happen if  the
exhaust
pipes were run inside another set of pipes to keep heat and reflect it
back
?
 Doug

That would work well. Especially if you ducted cooling air between them.

Paul Lamar

Many of the nitro burners are doing this to prevent fires in case of
oil finding it's way to the headers. Others do not bother due to another
few pounds of weight, but it does work.
Archie

 
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