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BNSF Dash 9-44CW exhaust encasement

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  • Member since
    January 2021
  • 24 posts
BNSF Dash 9-44CW exhaust encasement
Posted by Max Karl on Tuesday, June 8, 2021 8:57 PM

Recently, I had the chance to railfan the BNSF tracks. Many more Dash 9s are going by, and some of them have a newly added exhaust encasement. It does not appear to go by roster numbers, orders, or paint schemes. It looks like two panels and some struts on the front and rear of the exhaust. I don't think it is a silencer because the engines sound the same, maybe even louder. What is this? exhaust 1exhaust 2

 

  Max Karl, MRL and BNSF

  • Member since
    May 2003
  • From: US
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Posted by BaltACD on Tuesday, June 8, 2021 10:17 PM

Max Karl
Recently, I had the chance to railfan the BNSF tracks. Many more Dash 9s are going by, and some of them have a newly added exhaust encasement. It does not appear to go by roster numbers, orders, or paint schemes. It looks like two panels and some struts on the front and rear of the exhaust. I don't think it is a silencer because the engines sound the same, maybe even louder. What is this? exhaust 1exhaust 2

I suspect it is some kind of device to prevent hot carbon particles and/or other exhaust material from starting brush fires.  Pictures are not sufficiently detailed to make anything other than a guess. 

  • Member since
    December 2017
  • From: I've been everywhere, man
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Posted by SD70Dude on Wednesday, June 9, 2021 8:32 AM

I've never heard of spark arrestors on anything besides blower EMDs, and maybe some FMs when they were still around.  

Perhaps these units were in storage until recently, and this is a remnant of a heavy duty stack cover?

Greetings from Alberta

-an Articulate Malcontent

  • Member since
    October 2010
  • 20 posts
Posted by GBSD70ACe on Wednesday, June 9, 2021 11:46 AM

It's a stack cover for being part of the reserve fleet. They just flip over the two sides to easily cover the stack for storage

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