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  1. #1
    aquaaddict's Avatar
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    Does the closed thermostat prevent engine being flushed? (MR1 07 FxHO)

    Hi,

    As I understand the cooling system, the flow out of the block runs thru the thermostat, so when the thermostat is closed (as it is normally when running on hose) fresh water is only running thru the exhaust, as the oil cooler and then the engine block output are blocked by the cold thermostat? If that is correct doesn't that defeat a lot of the point of flushing?

    I always flush mine but wondering if I should put in valve to manually bypass the thermostat when flushing so the block also gets flushed, or is there some other way water exits the block when the thermostat is closed?

    Thanks

    Ants

  2. #2
    mine opens when flushing but i live in texas

  3. #3
    aquaaddict's Avatar
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    Quote Originally Posted by seabrook View Post
    mine opens when flushing but i live in texas

    I am in Australia, but laser thermometer on thermostat case shows it getting to around 40-45C (105-115F) , service manual spec is it opens at 50-60 (123-140).

    Do you just idle yours or are you revving on hose to get temp up?

    Thanks

    Ants

  4. #4
    aquaaddict's Avatar
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    Quote Originally Posted by seabrook View Post
    mine opens when flushing but i live in texas

    I am in Australia, but laser thermometer on thermostat case shows it getting to around 40-45C (105-115F) , service manual spec is it opens at 50-60 (123-140).

    Do you just idle yours or are you revving on hose to get temp up?

    Thanks

    Ants

  5. #5
    Quote Originally Posted by aquaaddict View Post
    I am in Australia, but laser thermometer on thermostat case shows it getting to around 40-45C (105-115F) , service manual spec is it opens at 50-60 (123-140).

    Do you just idle yours or are you revving on hose to get temp up?

    Thanks

    Ants
    i just idle texas gets freaking hot the water gets above 90

  6. #6
    1) that many skis brook do you have a backyard??

    2) they like the cold water obviously. To get the temp up? Please explain. Thanks!

  7. #7
    aquaaddict's Avatar
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    I have since found out the thermostat has a small hole in it allowing some water to flow even when closed


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