What is normal engine temp 6th gen aggressive riding?

Discussion in 'General VFR Discussions' started by DCS, Jul 9, 2013.

  1. TheBeeDeeGee

    TheBeeDeeGee New Member

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    On the track in here south texas I saw around 228 a couple of times when the temp was in the 90's outside on my 6th gen. most of the time she was at about 220, this is running it hard on a hot day at the track.

    In stop and go traffic here this summer I see 222, then it will drop to about 215 when the fan is on, once I start moving it will drop back to 190 if I get up to around 60 mph.
     
  2. VFR Love

    VFR Love New Member

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    I picked up 50/50 Prestone premix. I found the drain plug on the side- but how do I ensure no air bubbles in the system after filling up?
     
  3. Rollin_Again

    Rollin_Again Member

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    Fill the radiator with fluid and then start the bike and let it run for a few minutes. After a couple of minutes top off the coolant in the radiator. Continue to let the bike run until the thermostat opens which is somewhere in the 190 degree temp range. When the thermostat opens it will cause the coolant level in the radiator to drop again at which point you will want to top it off again. With the radiator cap off then blip the throttle a few times at different RPM's to try to work any air bubbles out. Then close the radiator cap and fill your radiator reserve/overflow tank. Watch the bike carefully over the next few rides and make sure the radiator fan comes on at around 220 degrees.


    Rollin
     
  4. VFR Love

    VFR Love New Member

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    95 degrees today. Bike hit 241 in traffic. Gotta get that coolant out and refreshed!
     
  5. TNRabbit

    TNRabbit New Member

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    I went to Richmond today via I-95, about 80-90 mph for 45 minutes. Temp stayed right at 191 when blasting along at a steady 80, but would go up 10 degrees if a car was in front of me. Tractor trailer made it go up to almost 209. Sitting in traffic saw 220 one time....began dropping as soon as fan came on. Ambient temp was about 95 w/ high humidity.
     
    Last edited: Jul 18, 2013
  6. VFR Love

    VFR Love New Member

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    I hit 251 and the high temp light cracked. Jk but man that's too hot.
    Anything else I should check?
    Could it be a bad thermostat?
     
  7. TNRabbit

    TNRabbit New Member

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    Doubtful.

    I'd make sure there is no crud in the vanes of the radiators, the fan is operating properly, and the system has been thoroughly flushed

    Thermostats USUALLY either work, or they don't.

    251 is too damn hot~
     
  8. Noobtastic14

    Noobtastic14 New Member

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    That is quite the understatement.

    -Drew
     
  9. VFR Love

    VFR Love New Member

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    I'm going to replace the coolant ASAP and try to watch for when the thermostat opens as I do so. Thanks for the tip!

    I read up on how the throttle bodies have to be removed to get the thermostat out. No bueno.

    If the previous owner put an incorrect mix of antifreeze (too little water), would that cause the overheating?

    Looking for answers...
    Thanks!
     
  10. Noobtastic14

    Noobtastic14 New Member

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    From my understanding yes that would be bad.

    The water keeps the engine cool- and the antifreeze keeps the water from freezing in the winter. In las vegas I ran 100% distilled water+water wetter year round and it worked great.

    -Drew
     
  11. TNRabbit

    TNRabbit New Member

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    The Honda manual says not to use less than 50% coolant as it is necessary for corrosion protection & pump lubrication.
     
  12. VFR Love

    VFR Love New Member

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    So possible causes:
    Blocked fins
    Blocked lines
    Fan thermostat malfunction
    Coolant thermostat malfunction
    Water pump damage?
    Too little water in coolant?
    Improper spark plug gap?
    Something causing an overly lean condition? A sensor?

    Bike has stain tubes, flapper connected but pair valve capped.

    I know the coolant reads at the low line when cold. Could that contribute?
     
  13. TNRabbit

    TNRabbit New Member

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    That shouldn't make a significant difference.
     
  14. Noobtastic14

    Noobtastic14 New Member

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    That bike was a Yamaha, and a motorcross bike.

    -Drew
     
  15. TNRabbit

    TNRabbit New Member

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    I'm just sayin'~ for the OP's benefit.

    In my experience, using ZERO coolant in ANY engine is a bad move due to the reasons stated above. Also, it doesn't just protect against freezing; it raises the boiling point as well.
     
  16. Big_Jim59

    Big_Jim59 Member

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    Is the cooling fan coming on above 221 degrees?
     
  17. VFR Love

    VFR Love New Member

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    Yes the cooling fan comes on. No idea if it does so consistently or turns at the speed it should.

    Maybe it's just an air pocket in the system. I just haven't had time to pull the fairings and have at it yet.
     
  18. VFR Love

    VFR Love New Member

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    Covers are off. Coolant overflow almost empty! Just a small bit near the hose otherwise empty.

    When I bought the bike 4 months ago it registered as low according to the overflow bottle marks. Previous owner had side cover off and was futzing with it. It was at low mark.

    I pulled off side cover after several rides and saw same thing. No change- just on low end of acceptable.

    Now it's near empty 3 months later?

    How could I lose coolant?
     
  19. TNRabbit

    TNRabbit New Member

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    A tiny leak can evaporate & never show.

    Also , (worst case) a head gasket leak can do the same.

    A marginal radiator cap can also alow leaking that doesn't readily show......could be the reason for overheating as well.
     
  20. VFR Love

    VFR Love New Member

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    Saw one drop of oil on top of coolant in radiator.
    Gonna refill now and in morning open (crack) oil drain and see if there's coolant below the oil.
     
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