Click for Delta Click for Walker Click for Burger Click for Mulder Click for Perko

Raw water side of motor

Discussion in 'Ocean Yacht' started by Boomer, Aug 26, 2019.

You need to be registered and signed in to view this content.
  1. Boomer, Aug 26, 2019
    #1
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    As it is very difficult to fine the thin walled brass raw water tubing, anyone ever use reinforced wet exhaust hose for your raw water side of the motor with fiberglass elbows to make the bends?
  2. Pascal, Aug 26, 2019
    #2
    Pascal

    Pascal Senior Member

    Joined:
    Feb 29, 2008
    Messages:
    8,546
    Location:
    Miami, FL
    Confused... Brass should NEVER be used for raw water (salt water) whether on engine, air con or whatever.
  3. Boomer, Aug 26, 2019
    #3
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    Maybe I should have said the pipe has a brass color...I assumed it was brass
  4. Pascal, Aug 26, 2019
    #4
    Pascal

    Pascal Senior Member

    Joined:
    Feb 29, 2008
    Messages:
    8,546
    Location:
    Miami, FL
    You may want to post a picture or at least tell us what engines you have.

    Bronze is usually what s used for raw water but usually for any significant length reinforced hose is used
  5. rtrafford, Aug 26, 2019
    #5
    rtrafford

    rtrafford Senior Member

    Joined:
    Jul 13, 2019
    Messages:
    1,732
    Location:
    Vero Beach
    If it's brass, get it off your boat. Replace it with bronze, specifically from a company like Groco that will be using a pure quality of bronze. Fitting from Home Depot should not apply for your attention.
  6. Boomer, Aug 26, 2019
    #6
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    1983 detroit 671 ti...maybe they are bronze...original
  7. Capt Ralph, Aug 26, 2019
    #7
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,443
    Location:
    Satsuma, FL
    It's Copper tubing and yes, I have used exhaust fiberglass tubes and hoses many times with great results.

    Check with https://www.centekmarine.com/products/ for what is already available.
    WestMarine will be your retail connect.

    When it's not off the shelf, I also make my own with these parts and epoxy.
  8. Boomer, Aug 26, 2019
    #8
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    Thanks for the ideas...will go with wet exhaust hoses and the fiberglass elbows...only need to make 2 custom joints for the fuel coolers as they are approx 3/4" off the 2" main raw water supply
  9. rtrafford, Aug 26, 2019
    #9
    rtrafford

    rtrafford Senior Member

    Joined:
    Jul 13, 2019
    Messages:
    1,732
    Location:
    Vero Beach

    New double stainless clamps everywhere, and not the cheap ones.
  10. Capt Ralph, Aug 26, 2019
    #10
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,443
    Location:
    Satsuma, FL
    Your replacing bad or re-inventing?
  11. Boomer, Aug 26, 2019
    #11
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    Replacing bad...wrapped one up in fiberglass and resin tonight to get me through the summer then replace all in the winter
  12. Capt Ralph, Aug 27, 2019
    #12
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,443
    Location:
    Satsuma, FL
    One Covington that We serviced was rebuilt years ago. The rebuild shop got the steel and copper tubes confused around the first H E. Yes, it rusted out and this started my glass tube works.

    I have heard of others trying to use stainless auto exhaust tubes with fancy bends from the muffler shop.
    The bends rust out quickly.
  13. Capt Ralph, Aug 27, 2019
    #13
    Capt Ralph

    Capt Ralph Senior Member

    Joined:
    Sep 8, 2004
    Messages:
    13,443
    Location:
    Satsuma, FL
    Starting to think you need to bring your ship up here when you get slow.
  14. Boomer, Aug 27, 2019
    #14
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    Did some fiberglass/resin wraps with roven woven last night..will sand smooth tonight, make round, put another coat of resin on to fill on the sanding marks...should be good to go until winter when I replace the raw water side of the engines
  15. Boomer, Aug 27, 2019
    #15
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    Get slow? That will never happen...lol
  16. Boomer, Sep 9, 2019
    #16
    Boomer

    Boomer Senior Member

    Joined:
    Oct 14, 2017
    Messages:
    677
    Location:
    Seminole
    Fiberglass job held together great...may just sand all the pipes down and put a round of fiberglass and resin on them...why reinvent the wheel?