Redback Motorcycle Smash Repairs - 1/ 9 Collie St, Fyshwick. Ph: 6280 5433

Street Triple R heating issue

Discussion in 'Tech Help' started by Maree, Nov 16, 2015.

  1. Ron50
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    Ron50 Member

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    If it was my bike I'd pinch off the hose to the overflow tank - thereby stopping the gravity feed back into the radiator - and then check the level in the radiator to make sure it stays totally full and isn't sucking air from a seal, gasket or hose fault. I'd do that for peace of mind and for the intellectual satisfaction of getting to the bottom of the mystery. If there's no air gap under the radiator cap then I'd be happy. As others have suggested, maybe the MIN mark is what the level should be when cold and the MAX when hot.
    Another consideration is the type of coolant. The specified Triumph HD4X hybrid OAT may have extra anti-foaming qualities to justify its extra price over coolants suitable for slower revving cars. HD4X is advertised as having specific anti-cavitation properties, but the main advantages claimed for it are that it is a long-life coolant that uses organic acids instead of nitrite, phosphate, borate and amine. The hybrid part of the title usually means that it still contains the traditional aluminium protector silicate.
    The type/brand of coolant being used hasn't been mentioned so far, nor at what temperature gauge indication fan operation starts.
    Even without a fault in the cooling system, at higher revs cavitation can occur on the back of the water pump impeller blades, resulting in vapour/foaming as well as erosion of the blades.
    Did I mention that I prefer air-cooled bikes?
     
    Last edited: Nov 20, 2015
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  2. gazman
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    gazman Member

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    30+ degree days, engines run hot. just sitting still a minute (no air flow) will see very high engine temps.
     
    Last edited: Nov 19, 2015
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  3. Maree
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    Maree Member

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    Just an update. Plan to get a new radiator cap, just haven't been near a bike shop in the past couple of weeks. Anyway as a precaution I tighten all the hose clamps I could find, and topped up the overflow tank again to minimum. Haven't seen any fluid leaks or heard any bubbling since. Will get a new radiator cap anyway and keep an eye on things, but at this stage looks like perhaps one of the clamps was just loose enough that some air was getting in. Thank you all so much for the advice and tips - really do appreciate it!!
     
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  4. Jimmc
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    Jimmc Member

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    Cool, maybe that and with the setup of things, it is just one of those Trumpy things.
     
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  5. radioactive_ACT
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    radioactive_ACT Member

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    I had a similar problem - overflow tank filling up and eventually overflowing leaving a puddle. I think the radiator cap was the main issue (venting too early), but I also found one of the hose clamps was loose. Also, even after burping, after the bike was left overnight with the radiator cap off the level dropped so maybe a bit more air made it's way out. So three things fixed and the bike isn't filling the overflow tank.
     
    #25