T-stat housing, best way to clean, or replace it?

Discussion in 'General Maintenance/Repair Questions' started by JMG, Jun 11, 2019.

  1. JMG

    JMG Member

    38
    Dec 28, 2018
    2006 Sea Ray 185 Sport
    4.3l Mercruiser
    20190611_194136.jpg
    20190611_194136.jpg 20190611_194128.jpg
    Sorry to post one pic twice. I haven't had any problems, I just don't know the history and figured thermostat, sender and sensor were due to be replaced. Lotta scale/rust inside housing, a friend suggested I soak in CLR and then scrape the corrosion out. Any advice?
     
  2. lawndoctor

    lawndoctor Active Member SILVER Sponsor GOLD Sponsor

    393
    Jun 5, 2008
    Chesapeake Bay & Philadelphia
    2009 330 Sundancer & 2002 225 Weekender
    8.1L V-Drives & Bravo III 5.0L
    I refinished the one on my 225 WE. I removed the sensor, plug, and thermostat; sanded the gasket surfaces; soaked it in paint remover; primed and painted the housing; installed a new plug and thermostat; and reinstalled the sensor. It wasn’t that much work, and it looks great and functions just fine.
     
  3. JMG

    JMG Member

    38
    Dec 28, 2018
    2006 Sea Ray 185 Sport
    4.3l Mercruiser
    That reminds me of another question - what kind of paint and primer? And, did you paint both the interior and exterior?
     
  4. lawndoctor

    lawndoctor Active Member SILVER Sponsor GOLD Sponsor

    393
    Jun 5, 2008
    Chesapeake Bay & Philadelphia
    2009 330 Sundancer & 2002 225 Weekender
    8.1L V-Drives & Bravo III 5.0L
    I painted only the exterior, and not the gasket surfaces. I used Quicksilver Light Grey Primer spray paint and Quicksilver Phantom Black enamel spray paint.
     

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