Hi paul , Are you have sell this housing? thank you vins lee

Do I have these housings? No. Paul Lamar

       Hi!: are you aware of somebody offering 13B P-Ported housings, but with
      a rectangular instead of round opening? From the attached NSU chart, it
      seems square is better than round, also 'streamlining' the port-to-housing intersection
      may be good. Besides the attached charts, SAE paper 2013-32-9161 by the Taiwanese
      Dun-Zen Jeng et al, deals in extensive with the issue of intake and exhaust pipe effect
      on RCE performance, including port shape, but this research was conducted in a 300 cc per
     chamber engine.
      Thanks. Best regards. Salud †
              Jose Gros-Aymerich
             Madrid, Spain

For aircraft use it is not worth the considerable increase in cost.

Paul Lamar

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