Announcement

Collapse
No announcement yet.

MCX Thermostat

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    Realize i’m Bumping an old thread but have some useful info and a question.

    Looks like Sierra SIE-18-43017 is a replamcent for the thermostat it’s only ~$15 before shipping.
    https://www.wholesalemarine.com/sier...17-thermostat/

    Anyone have a part number for the gasket? Having a heck of a time finding a part number to cross check.

    Thinking this is is but no one else seems to have this part number - IND-551004
    https://www.marinepartssource.com/ga...at-hsg-s551004

    Comment


    • #17
      I replaced my original thermostat with a sierra marine 160 which has a spring. Temps now run 160 to 180. Next spring I am going to replace it with a mastercraft original indmar thermostat . The original one in the engine ran a solid 160 I only replaced it because I did the replumb upgrade.
      If she don't shine , she ain't mine

      Comment


      • #18
        Originally posted by mike koen View Post
        I replaced my original thermostat with a sierra marine 160 which has a spring. Temps now run 160 to 180. Next spring I am going to replace it with a mastercraft original indmar thermostat . The original one in the engine ran a solid 160 I only replaced it because I did the replumb upgrade.
        That’s good to know...

        I did the CAT replumb and had to pull the Tstat housing and now it’s leaking a bit. Figured if i’m Going back in to do the gasket right might as well put in a Tstat.

        Maybe i’ll Just order the parts from ski dim and call it a day.

        Comment


        • #19
          Big thank you to BrianS for the pictures and details. Replaced my thermostat last night ~ 2007 MCX with the 160 from Bakes Marine up in Washington.

          Click image for larger version  Name:	IMG_3762.jpg Views:	0 Size:	846.5 KB ID:	2704535

          Indmar thermostat 160
          https://www.bakesonline.com/indmar-1...hermostat.html

          Indmar gasket for 2 bolts.
          https://www.bakesonline.com/gasket-i...t-housing.html

          I also replaced my bolts and lock washers which were pretty rusted. Bolts were 3/8-16 3 inches long which I found at West Marine.

          Click image for larger version  Name:	IMG_3770.jpg Views:	0 Size:	1.06 MB ID:	2704536
          Question: I think I read somewhere that you should not use never seize on stainless steel bolts? Is that true?


          Hope this helps someone going forward.
          Last edited by bump32; 05-11-2022, 10:05 AM.

          Comment


          • #20
            I need to replace the Thermostat on my 2004 MCX. I tried to do it Saturday but there wasn't room to get a socket wrench on it. I have a 3 bolt housing not 2. I could get the socket on, but there wasn't enough clearance to get the wrench on top without hitting the piece where the air filter attaches. Unfortunately the boat is stored at the marina and I didn't take any pictures to show the problem.

            Any advice on how to get the 2 bolts in the back off without having to remove the air intake?

            Comment


            • #21
              Can anyone comment on whether the a 2003 MCX is a 2 bolt or 3 bolt gasket? I'm just sourcing some spare parts and my boat is currently at the lake. TIA
              2003 Mastercraft X9, 350 MCX (Black Thunder)

              Comment


              • #22
                Skidim number was R026002 160 degree, RWC
                Ski in snow, ski in water, and always have fun!

                2008 Prostar 214 MCX
                1995 Prostar 190 "Evil Minion"
                Previous 93 Prostar 190 1.5:1 GT40

                "Left Foot Forward and preferring girls."
                "Do you have Flake on that boat?"

                Comment

                Working...
                X