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Closed cooled 454 Crusader exhaust riser question

Discussion in 'Classic Sea Rays' started by WaltL, Sep 22, 2020.

  1. WaltL

    WaltL New Member

    12
    Jul 19, 2020
    Athens, GA
    1985 390 EC
    454 Crusaders
    Not sure if I should ask this here or in the mechanical forum, but figured someone with old school Crusaders might know this. In the picture below, you can see the exhaust setup for my engines (new boat for me, but it hasn't arrived yet so I can't measure).

    You can see some leaking/rust where the manifold, collar/donut and riser are mated. Four studs go through this assembly, which I'm told is like this: manifold/gasket/donut/gasket/blockoff plate/gasket /riser then nuts to tighten at the riser end.

    The original Crusader parts were replaced at some point with aftermarket Barr components. The gasket parts I know, but folks at Barr were not sure about the stud length for this setup. Available studs are 4", 3" or 2 3/4". Does anyone have this set up and maybe happen to know the correct stud length?

    Crusader_starbd_cropped.jpg
     
  2. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass, cape coral fl
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Looks easy enough to measure.
     
  3. WaltL

    WaltL New Member

    12
    Jul 19, 2020
    Athens, GA
    1985 390 EC
    454 Crusaders
    Obviously. If I had access to the boat, I would... wanted to have parts in hand before delivery.
     

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