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Water flow from Thermostat Bore F150TXRD

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  • Water flow from Thermostat Bore F150TXRD

    There was discussion on another thread regarding water flow through the thermostat bore under certain conditions. A few videos.....

    First: with just the flush port connected and NOT running. Thermostat obviously removed.
    https://youtu.be/acC0QP56bOg

    Second: Flush port and muffs connected. No stat and not running.
    https://youtu.be/biF2odoeDSM

    Third: Running with stat removed
    https://youtu.be/Ya1hfSAUWb8



  • #2
    ID of flush port line is 6mm. Had to remove about an inch of hose to get back to original size.

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    • #3
      Originally posted by pstephens46 View Post
      ID of flush port line is 6mm. Had to remove about an inch of hose to get back to original size.
      About a quarter of an inch for the non-metric folks. Quite small actually. Hard to even blow through let alone flow much water.

      How about a half inch ID hose going directly to the engine side of the thermostat for a top down high flow flush?

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      • #4
        Who is Rich Hill?

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        • #5
          Nice!

          I particularly liked seeing the tiny jets spurting from the 'stat bleeders in Video 1.

          Tiny "flow" but shows that the cavity behind was filled and pressurized.



          IMO there is a market opportunity for some seriously robust dual-feed muffs - with a powerful clamping action.

          This is what I do to get my (best quality available dual muffs) to work on the F225:



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          • #6
            Originally posted by boscoe99 View Post
            Who is Rich Hill?
            I had to set up a YouTube account for the first time today. I was trying to upload and was getting an error message that I needed to choose a name. My GD name is part of the Google acct. Nope. need another. So I finally figured out where I needed to be to make the change. I live in Richmond Hill......

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            • #7
              Originally posted by boscoe99 View Post

              About a quarter of an inch for the non-metric folks. Quite small actually. Hard to even blow through let alone flow much water.

              How about a half inch ID hose going directly to the engine side of the thermostat for a top down high flow flush?
              I liked the idea of a composite thermostat housing. Or at least make it replaceable.

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              • #8
                Excellent videos - thanks for taking the time to experiment and record these 3 scenarios.

                I remain interested in seeing if a hole or two drilled into the T-Stat face will help FW and Air escape through the highest T-stat bore on the block.

                It seems like it can't really hurt anything since the T-stat will be wide open at operating temperatures - where - you could have 10 holes and it won't matter.
                The engine might run a little cooler at trolling speeds due to the leakage of salt water. But, I can't think of why that would be much of a problem.
                Grady-White 330 Express

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                • #9
                  Last edited by boscoe99; 03-10-2018, 08:48 PM. Reason: air bleeds

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                  • #10
                    Originally posted by boscoe99 View Post
                    you failed to post any words with that

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                    • #11
                      Are words needed? I did type the words "air bleeds" in the reason that I edited it. Look below the bottom of the photo.

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                      • #12





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                        • #13
                          "Breeders".

                          Who makes the best flushing attachment for a '05 F225? attachment.php?attachmentid=316493&stc=1&d=1364639549.jpg
                          Last edited by oldmako69; 03-12-2018, 12:28 AM.

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                          • #14
                            Those bodies look like twin sisters.

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                            • #15
                              Solid flush attachment

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