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Adding hi-temp alarm to 88 C30

Discussion in 'Catalina 30' started by Hayden Watson, Jan 5, 2018. Add this thread to a FAQ

  1. Hayden Watson

    Hayden Watson

    Joined Apr 5, 2009
    386 posts, 57 likes
    Catalina '88 C30 tr/bs
    US Oak Harbor, WA
    On my 88, the coolant thermostat housing only has one port for a sensor probe. Catalina Direct sells a replacement thermostat housing with 2 ports and a high temp switch fir $265 but the switch is just $55.
    I am wondering if anyone has tried drilling and tapping a new port for the switch in to the original housing. I have a drill press and taps.
     


  2. LeslieTroyer

    LeslieTroyer

    Joined May 20, 2016
    1,005 posts, 213 likes
    Catalina 36 MK1
    US Sammamish, WA Everett, WA
    I used an RS11 from noland engineering. About $300. But now I get oil pressure, water. Temp, rpm, fuel, on my chart plotter or i70. Best part I get visual and audio alarm if values are outside limits I set
     


  3. Ralph Johnstone

    Ralph Johnstone

    Joined Jan 4, 2006
    2,404 posts, 241 likes
    Hunter H-310
    CA West Vancouver, B.C.
    If your engine heats a domestic hot water tank, install a temperature sensor in the engine coolant outlet line. Watch the sensor ground line as the sensor will be surrounded by rubber.

    DSC01509R.JPG

    If your engine does not heat a hot water tank .................................. you may be coughing up $265.00 for a new housing with dual ports.
     


  4. Hayden Watson

    Hayden Watson

    Joined Apr 5, 2009
    386 posts, 57 likes
    Catalina '88 C30 tr/bs
    US Oak Harbor, WA
    I have been doing some research on drilling and tapping cast iron. It looks like I might need to change the angle on my drill bit to 135ยบ but with low speed and oil I should be able to drill a new port and then tap threads into the hole. I might want to do this during the off season so that if it goes pie shaped, I will have time to write that $265 check!
     


  5. njlarry

    njlarry

    Joined Sep 23, 2009
    1,220 posts, 88 likes
    O'Day 34-At Last
    US Rock Hall, Md
    Two questions...
    Why not add a temp sensor to the exhaust elbow?
    What is an rs 11?
     


    TomY likes this.
  6. LeslieTroyer

    LeslieTroyer

    Joined May 20, 2016
    1,005 posts, 213 likes
    Catalina 36 MK1
    US Sammamish, WA Everett, WA
    The RS11 is an analog to NMEA 2000 converter. It puts engine sensors values on the network so they can be viewed on a chart plotter or similar.

    Mahalo
     


  7. seadaddler

    seadaddler

    Joined Dec 19, 2006
    5,196 posts, 96 likes
    Hunter 36
    US Punta Gorda
    Temp gauge would be good and added a temp gauge by putting tee in hoses going int to thermostat and been on my boat many years and very accurate and gives you what temp your system is
    pretty cheap to do get gauge sensor and wire to cockpit.
    Nick
     


    jssailem likes this.

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