[C320-list] PYI PSS help

[Jeff Church]

Chris,

On my 387 they just loop from the PSS to a thru hull about 6" away from the shaft. The thru hull has a scoop/strainer on the underside.

JeffC
  ----- Original Message ----- 
  From: crashley at gte.net 
  To: C320-List at Catalina320.com 
  Sent: Wednesday, April 30, 2008 9:05 AM
  Subject: Re: [C320-list] PYI PSS help


  Jeff,

  Your description sounds good enough. Do you know if this is this how 
  Catalina installs them as original equipment now? It does represent a more 
  closed system method that I may consider doing at some point.

  Thanks,
  CRA
  Rosebud #882
  .
  ----- Original Message ----- 
  From: "Jeff Church" <jjemail at comcast.net>
  To: <C320-List at Catalina320.com>
  Sent: Tuesday, April 29, 2008 4:24 PM
  Subject: Re: [C320-list] PYI PSS help


  Chris,

  The fitting exits the pressure side of the heat exchanger so there is a bit 
  of seawater flowing thru the hose. I don't see how that would present a 
  problem. The positive pressure prevents any air from accumulating in the 
  seal, and the very small diameter of the barbed fitting prevents any 
  significant volume of water from being diverted from the cooling system. The 
  technician at my CY dealer suggested that I plumb the PSS this way. He said 
  that CY supplied a similar kit for some models after they had a problem with 
  the way they originally vented the seal when they started installing them as 
  standard equipment.

  JeffC

    ----- Original Message ----- 
    From: crashley at gte.net
    To: C320-List at Catalina320.com
    Sent: Tuesday, April 29, 2008 7:57 AM
    Subject: Re: [C320-list] PYI PSS help


    Jeff,

    That's an elegant solution but are you sure there isn't any positive
    pressure in the heat exhanger that would force cooling water back thru the
    PSS? Not sure it would matter but it might be a concern. I simply routed 
  and
    clamped a piece of 3/8" plastic tubing from the PSS barb to just below the
    underside of the aft engine cover. It's several inches above the water 
  line,
    near the center of the boat and I've never seen any evidence that water
    comes out of it.

    CRA
    Rosebud #882


    ----- Original Message ----- 
    From: "Jeff Church" <jjemail at comcast.net>
    To: <C320-List at Catalina320.com>
    Sent: Monday, April 28, 2008 4:53 PM
    Subject: Re: [C320-list] PYI PSS help


    Joe,

    I removed the drain petcock at the aft end of the exhaust manifold heat
    exchanger and replaced it with a brass barbed fitting. A hose connects 
  that
    to the barbed fitting on the PSS. The hole in the heat exchanger has 
  metric
    threads that are not quite identical to 1/4" NPT so I ran a 1/4" NPT tap
    thru them (I think it was 1/4", but it was a few years ago) and then the
    barbed fitting threaded correctly.

    Here is a pic from the 320 site:
    http://www.catalina320.com/gallery/idlewildprojects/IMG_0446

    Good luck,

    JeffC
      ----- Original Message ----- 
      From: Joseph A Tamucci
      To: C320 LIST POST
      Sent: Monday, April 28, 2008 3:42 PM
      Subject: [C320-list] PYI PSS help


      I recently installed the replacement to the PYI PSS shaft seal that is
      vented. It requires that the vent hose be installed 2 ft above the
      watereline. It is not obvious to me where I can run the vent hose to
    achieve
      the necessary height. Any suggestions would be welcomed.

      Thanks,

      Joe Tamucci #619