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Thread: water

  1. #1

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    water

    how often do you need to top up water, I am finding I need to do after some hot city running, water is going somewhere and not clear where.

    checked hoses etc. engine oil is fine, new radiator so perhaps the a seal around the water pump or maybe thermostat housing - are there any known issues ?

    very hard to find especially if it only happens under pressure

    I do get water from the header overflow when it is really hot

    is it common to have to top up water near enough weekly (depending usage)

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  3. #2
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    Re: water

    Some years ago I had a leak from the thermostat housing to the block, 'O'ring was just too old/compressed. The only giveaway was a slight staining of the block below the thermostat since the coolant was just evaporating off the hot block.
    johnnyquick likes this.
    Full of Hot air? Intercool yourself............ you know it makes sense

  4. #3

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    Re: water

    Quote Originally Posted by TheDuck View Post
    Some years ago I had a leak from the thermostat housing to the block, 'O'ring was just too old/compressed. The only giveaway was a slight staining of the block below the thermostat since the coolant was just evaporating off the hot block.
    yeah I think that is my first area to check, I agree it has to be somewhere hot since I cannot actally see any drips - just evaporates away although you can usually smell it if you know what I mean - is that o-ring round and about oil filter seal size or even the same size as the seal on the thermostat - hard to get something like that here in Thailand

    cheers


    forgot - I have some silicone high temp sheet I can make one so should be ok

    https://www.ebay.com/itm/Silicone-Ru...mT8caIXOxN0z0A
    Last edited by GeoffXX; 06-13-2019 at 6:37 AM.

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  6. #4
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    Re: water

    Quote Originally Posted by GeoffXX View Post
    yeah I think that is my first area to check, I agree it has to be somewhere hot since I cannot actally see any drips - just evaporates away although you can usually smell it if you know what I mean - is that o-ring round and about oil filter seal size or even the same size as the seal on the thermostat - hard to get something like that here in Thailand

    cheers
    Yes I had been smelling evaporating coolant (very sweet smell) so I knew I had a leak. Only time I have had to top up between coolant changes.

    The 'O' ring is a big one (but small in cross section) that takes the shape of the thermostat housing so not an 'off the shelf' item unfortunately.
    Full of Hot air? Intercool yourself............ you know it makes sense

  7. #5

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    Re: water

    Quote Originally Posted by TheDuck View Post
    Yes I had been smelling evaporating coolant (very sweet smell) so I knew I had a leak. Only time I have had to top up between coolant changes.

    The 'O' ring is a big one (but small in cross section) that takes the shape of the thermostat housing so not an 'off the shelf' item unfortunately.
    updated my post so should be ok

  8. #6

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    Re: water

    well I believe I found my leak, when I went to take of the Radiator hose from the thermostat housing it just crumbled


    DSC_0000_BURST20190616094554562.JPG

    I also found that the thermostat seal ring had a tear in it

    I removed the thermostat completely as it is always hot here in Thailand and won't really affect running to any degree that matters

    The disintegrated hose connection just had enough left of solid metal for me to get the hose on securely (only just)

    I then made a Gasket out of my silicon sheet for the housing and assembled and tested - all seems to be sealed and no leaks and the hose is on tight for now

    Might start looking for that whole housing going forward and just keep it in case I need it

  9. #7
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    Re: water

    Plenty on Ebay in the UK at about £10. Worth having one sent over? Yours really is on its last legs.
    Ebay
    Full of Hot air? Intercool yourself............ you know it makes sense

  10. #8

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    Re: water

    Quote Originally Posted by TheDuck View Post
    Plenty on Ebay in the UK at about £10. Worth having one sent over? Yours really is on its last legs.
    Ebay
    will do, thanks mate

    enthusiasm for my bike has increased lately, was neglecting it for a while - my interest has peaked again

  11. #9
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    Re: water

    If as happens sometimes Ebay sellers won't post long distance you can always use my UK address and I will send it on to you.
    Full of Hot air? Intercool yourself............ you know it makes sense

  12. #10

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    Re: water

    Quote Originally Posted by TheDuck View Post
    If as happens sometimes Ebay sellers won't post long distance you can always use my UK address and I will send it on to you.
    cheers for that - I always have a steady stream of friends coming on holiday from the UK and use them often - next item coming is a chain and sprocket set
    TheDuck likes this.

  13. #11

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    Re: water

    Geoff
    If you're not running a thermostat then you may want to run a restrictor plate. The thermostat actually serves 2 purposes. 1st and foremost it stabilizes the block temp to a certain range. 2nd and often neglected or not know it slows water flow through the radiator allowing it to dump the heat it builds. Without the restriction the system will go into thermal runaway. We know the bird radiator is already on the edge of this condition. You can see this in a hot enviroment. When caught in traffic for extended periods the fan will cycle on and off for a few cycles then stay on. Then it will eventually be overcome and continue to rise to overheat. So I'd be very careful the first few times out. I suspect your going to get into trouble very quickly.
    TheDuck and johnnyquick like this.
    Route 191 formerly Route 666 Some say that this section of the
    road has 1100 curves in 95 miles.

  14. #12

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    Re: water

    Quote Originally Posted by beestoys View Post
    Geoff
    If you're not running a thermostat then you may want to run a restrictor plate. The thermostat actually serves 2 purposes. 1st and foremost it stabilizes the block temp to a certain range. 2nd and often neglected or not know it slows water flow through the radiator allowing it to dump the heat it builds. Without the restriction the system will go into thermal runaway. We know the bird radiator is already on the edge of this condition. You can see this in a hot enviroment. When caught in traffic for extended periods the fan will cycle on and off for a few cycles then stay on. Then it will eventually be overcome and continue to rise to overheat. So I'd be very careful the first few times out. I suspect your going to get into trouble very quickly.
    Great post and I understand exactly, controlling engine temp is a critical thing …..but I do not agree with your post - I can guarantee that once the thermostat is open it is never going to close again - in fact I want the coolant to be circulating through the Radiator at the highest rate possible`

  15. #13

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    Re: water

    Agreed it won't close. But it is engineered to create a measured amount of restriction to the flow. Allowing it time to shed the generated heat.
    Route 191 formerly Route 666 Some say that this section of the
    road has 1100 curves in 95 miles.

  16. #14

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    Re: water

    Quote Originally Posted by beestoys View Post
    Agreed it won't close. But it is engineered to create a measured amount of restriction to the flow. Allowing it time to shed the generated heat.
    I do understand and there is merit to your point but we are talking about a 15 year old engine not a nuclear reactor - the primary function of the thermostat was/is to get the engine up to running temp as fast as possible in a controlled way and in a cold climate this is important, I remember removing the thermostat on my car engine as an emergency measure and the effect was it ran cold - we already have cooling issues with the BB - people adding extra fans and stuff because it runs too hot, also worth considering is the efficiency of a well used and probably worn pump - when I tested it yesterday I saw no difference to the warm up cycle I've seen for years - the wax unit kicked in as normal and revs dropped about 2 mins after starting - also sitting in traffic with the speed of the pump reduced at idle I think greater waterflow is going to benefit cooling

    I would not advise anyone to remove the thermostat especially in colder countries - it would cause very slow warm up and keep the engine running at colder temps for longer which is not a good idea - for me I don't see it as a problem ………………………….yet .

  17. #15

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    Re: water

    Understand
    Let me know what your results are.
    As a reference what are your ambient temps at daily.
    Here I see lows in the 80's at night and 112 during the day during summer months
    40's at night and mid 70's during the day.
    Route 191 formerly Route 666 Some say that this section of the
    road has 1100 curves in 95 miles.


 
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