[C320-list] exhaust elbow question

[Peter Clancy]

Mike ...... My elbow was plugged almost solid with hard, black carbon. There was only a tiny hole letting the exhaust gas escape. Had to replace it. If your inspection showed minor buildup of carbon and it could probably be scraped off. There is still some risk of the elbow developing pinhole leaks over a period of time. They appear to be made of cast iron. 

I might also note that when I had removed the elbow and could visually inspect the inside of the exhaust manifold with a flashlight I found quite an accumulation of loose carbon dust. I vacuumed it all out with my small water vac. Hopefully, a good mechanic will also peer inside the manifold when doing the job.

Pete Clancy



----- Original Message ----- 
  From: Lachance, Michael B (ISD, IT)<mailto:MLaChance at thehartford.com> 
  To: C320-List<mailto:c320-list at catalina320.com> 
  Sent: Wednesday, October 04, 2006 12:32 PM
  Subject: Re: [C320-list] exhaust elbow question


  Pete,

  Silly question perhaps, but if an inspection shows buildup, can it be
  removed or cleaned out?

  Mike LaChance
  Commodore C320IA
  Seychelle, #141
  Noank, CT 

  -----Original Message-----
  From: c320-list-bounces at catalina320.com<mailto:c320-list-bounces at catalina320.org>
  [mailto:c320-list-bounces at catalina320.com] On Behalf Of Peter Clancy
  Sent: Wednesday, October 04, 2006 12:26 PM
  To: C320-List; Peter Clancy
  Subject: Re: [C320-list] exhaust elbow question

  Correction ...... I should have clarified that the exhaust elbow should
  be inspected at 500 hours assuming it is showing no signs of restriction
  such as lower RPM's, soot or black smoke discharge, overheating, etc.
  Any of these symptoms appearing before 500 hours call for immediate
  inspection and probable replacement. 

  Pete Clancy
    ----- Original Message -----
    From: Peter Clancy<mailto:SAILORPETE at msn.com<mailto:SAILORPETE at msn.com>>
    To: C320-List<mailto:c320-list at catalina320.com<mailto:c320-list at catalina320.org>>
    Sent: Tuesday, October 03, 2006 10:23 PM
    Subject: Re: [C320-list] exhaust elbow question


    Koen:

    I also have the Perkins diesel and replaced my elbow around 350 hours.
  Boat always in saltwater and nine years old at time of replacement. If
  you have similar time in a saltwater environment it probably needs
  replacement. Did it myself, not a big job if mechanically inclined. I
  bought the elbow from a Perkins distributor in Tampa and recall paying
  something over $100. I also replaced the exhaust hose to the aqua lift
  muffler while I had things apart. At a minimum, in should be removed and
  inspected every 500 hours.

    Peter Clancy
    AROBAN  C320  #222
    Miami, FL



      ----- Original Message ----- 
      From: Koen Bennebroek<mailto:vergaar2004-catalina at yahoo.com<mailto:vergaar2004-catalina at yahoo.com>> 
      To: c320-list at catalina320.com<mailto:c320-list at catalina320.com<mailto:c320-list at catalina320.com<mailto:c320-list at catalina320.com>> 
      Sent: Tuesday, October 03, 2006 10:05 PM
      Subject: [C320-list] exhaust elbow question


      I seem to remember someone mentioning that the exhaust elbows on
  C320's get clogged and are recommended to be replaced every so often..
      My local mechanic, who will do the very first service on our boat
  soon (so we do not have experience either with him or with the engine
      service in general), recommends we order the elbow and gasket from
  Perkins (I believe tadiesel sells them?) in advance to save time.
       
      Is this a good suggestion? We have purchased the boat used 2 seasons
  ago, so I have no idea what the history of this part is.
       
      Thanks for any suggestions,
       
      -Koen
       


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