round vs square exaust?

Discussion in 'Reverse Flow' started by bearded mike, Oct 31, 2014.

  1. I am currently building a custom reverse flow, cc is 36" x 24" x 24" , fb is 24" x 18" x 18" , question is 4" x 30 in stack or should I go square? If I go square what diameter and length? Help and info is appreciated. Thanks
     
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  3. bearded mike likes this.
  4. daveomak

    daveomak Smoking Guru OTBS Member SMF Premier Member

    Add to the "diameter" of the square if you use it.... The additional surface area will cause additional friction...
     
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