Engine overheating slow moving

Discussion in 'GS Boxers' started by Andrek, Aug 21, 2006.

  1. Lobby

    Lobby Viel Spass, Vato!

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    The better oil temperature management of the hexhead motors is one of the huge reasons to upgrade from an oilhead motor. In my humble opinion. :D

    I hated seeing the bars on my 1150's temp display climb upwards during stop and go traffic. On the 12GS, this doesn't happen.
    #21
  2. JimVonBaden

    JimVonBaden "Cool" Aid!

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    :nod

    Jim :brow
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  3. Emoto

    Emoto Sure, why not?

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    Yes, ordinarily, the temp gage stays below 1/2 on mine, even in slow, heavy traffic like I ran into in the heat on the way to the MOA national (BTW Jim, I looked for you at cyclenutz a couple of times, but you weren't around. next time).

    But, in one extreme (and I do not use the term loosely) traffic jam last year, mine did get really hot. Surprised the hell out of me. Pulled over and let it cool down some. Then rode on and it was ok.

    So, one in 6 years isn't bad, but it can happen.
    #23
  4. GoFar

    GoFar My butt hurts.

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    You're at sea level. Do this at altitude and it WILL overheat. DAMHIK...:D
    #24
  5. GoFar

    GoFar My butt hurts.

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    620's run unbelievably hot. I do not understand why Ducati didn't fit a cooler on these bikes. They heat up and fast! I changed the oil on the wifes bike often because of this...:eek1
    #25
  6. Deanowade

    Deanowade Chronic Dumbass

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    It does on mine. Stop and go traffic in the summer time, I hit the hash mark routinely. Only once did I have the oil light flicker, stuck in a downtown DC clusterfuck in the middle of summer. Convinced me to switch to synthetic oil.

    Cools down quickly with a little forward motion.
    #26
  7. island808

    island808 We are 100% SNAFU

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    I was in traffic for a couple hours, stopped, didn't even think about the substandard cooling of the bike for about 30-45 minutes.. and I mean I was stop stopped dead only moving when someone in front decided to pull a u turn and try to go home.. The road was closed, not jammed. There was a light breeze from behind not getting into that minuscule boxed in oil cooler at all.

    Anyway, at about 30-45 min, looked down and it was the first time I ever saw 5 bars, but it was quickly up to 6 and I, not being in any kind of hurry to sit still in traffic, shut the bike down and took a smoke break by the side of the road and phoned into work, etc. Got sick of walking the bike so I decided to take advantage of my decision not to use the typical street touring tires adored by most and cut towards the inside lane and came at the curb as perpendicular as I could and rode the median (as I was making a left and going past the shutdown on=ramp to a small business park, not trying to get down island). Circled the block for about 5 miles before the temp went back down to 4 bars though.

    Since then, it likes to see 5 bars occasionally, where as it never used to, even in slow off roading for hours. Maybe the thermostat gets "broken in" or just broken.

    As far as synthetic oil transferring heat more readily, I can't find a thing on that. Well, other than other than people in forums. I'm sure snake oil salesmen like amsoil and purple would make claims, but I'll take my claims from people that don't fall for pyramid schemes thanks..
    #27
  8. rvt

    rvt Big Fat Trail Bikes

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    Assuming the lamp is for oil pressure, surely this should never come on, except for the brief moment after startup while it builds pressure?

    If it is indicating low pressure, the oil is either REALLY thin, or worse, low. Of course, if it was low, the light would probably stay on and the motor would self destruct...:eek1
    #28
  9. island808

    island808 We are 100% SNAFU

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    Your oil can't get that thin. If the light went on, the sump was dry or it was a temp light. My experience left me with about 500 ml of oil burn in that 2 hours of traffic sitting, and I was shutting off my engine. Luckily I was full when I set out, but was below sightglass when I got to work.
    #29
  10. def

    def Ginger th wonder dog

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    If your oil temp now routinely reads a bit higher, your oil might have increased in vis, changing the flow rate through the cooling circuit.

    As for synthetics cooling better, I have no information that this is so. However, synthetics do tolerate much higher temperatures without cook-off. The Noack scores indicate that. Also, synthetics maintain vis over a wider temperature range...all good reasons to use synthetic in our boxers.
    #30
  11. def

    def Ginger th wonder dog

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    I disagree...it happens frequently in a variety of engines under hot conditions.
    #31
  12. Xdriver

    Xdriver Been here awhile

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    Here in Texas summer heat, I routinely have 4 bars. The base bar and 3 above that. In Temps above 90 in traffic it will add a fifth bar if stop and go. I saw 6 once at about 98 indicated temp. I just plan around rush hour traffic now. Same results with the BMW shop oil and Walmart oil. Switching to Mobile 1 next week for my 12K check.
    #32
  13. GSQuester

    GSQuester not-quite-a-n00b

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    I honestly don't know what to think about this. I find it inconceivable that running at such slow speed for so long in such hot weather wouldn't change the engine temperature, but this isn't the first time I've read this kind of anecdote. Personally I'd wonder if maybe the temp gauge/sensor/computer had a problem if it didn't climb at all under those conditions. Seems downright impossible, and begs the question - if that's how the cooling system was designed - to be so efficient regulating the engine temperature no matter what, then why even have a temp gauge? Seems like it would have been good enough to have no temperature indicator other than an idiot light set to come on when you're riding somewhere *really* hot (like the surface of the sun?).

    I've got a 2010 R1200GSA and just got back from a week ride through BC, Alberta, Montana, Idaho and Washington - average daytime temperatures were over 30C with a high of 37C one day (that's 98F for those of you below the border :)), and here's what I've seen - as long as I run at highway speeds my bike temp gauge stays at 4 bars. If I slow down somewhat when it's that hot outside, it easily goes to 5 bars. If I'm in stop and go traffic or even have to sit through more than two lights in the city, even if the weather is cool (like 18C/65F), the gauge rapidly climbs to 6 bars.

    When I first got the bike I was concerned about how quickly it would heat up in slow traffic, but I've never seen more than 6 bars (or oil temp warning light), or had any performance issues, so I stopped worrying about it. But from everything I've read in this and previous temp related threads it does seem there's a fair bit of variability with the temperature readings from one bike to the next. That's the only way I can make sense of these different experiences and am convinced this is the one time "they all do that" doesn't apply.
    #33
  14. tank slappa

    tank slappa Let's just ride!

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    In order to beat the heat of the day(Queensland - Australian summer) we headed off 1 hour before sunrise and after riding for a hour in hot humid sub tropical conditions in the dark, in sand, in first (2008 gs) my bike was near the top of its temp range.

    I stopped for 15 minutes then started up again, this time in 2nd and moving a lot faster (as it was now light enough to see better) the bike returned to normal and did not have another problem with its temperature.
    #34
  15. JimVonBaden

    JimVonBaden "Cool" Aid!

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    Remember all, that the temp gauges on the R1200 series are not all the same. From 04-06 they have fewer bars, and IIRC there was another change later. This means 5 bars on one bike does not equate to 5 bars on another of different years.

    Jim :brow
    #35
  16. lunchmeat

    lunchmeat MLI

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    I've done that in Maryland before and earned myself a ticket for my troubles. Maryland cops are not too keen on the idea of filtering or white lining. I'd suggest pulling over and finding some shade.
    #36
  17. Manatee2000

    Manatee2000 Adventurer

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    For me any way the reasont he OIL thing bother me so bad is because I have had German, American and Jap cars and they have figured out how to keep the tempature guage constant in all conditions going from about 0 to 110 degrees. I don't understand why I paid $19,000 and they can't supply a product with the same reliabilty. I hate guessing if what I am seeing is going to screw up my bike.
    #37
  18. JimVonBaden

    JimVonBaden "Cool" Aid!

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    Your German, American and Japanese cars are all water cooled. Your motorcycle, irrespective of cost (because cost is irrelevant), is air/oil cooled.

    Jim :brow
    #38
  19. Lobby

    Lobby Viel Spass, Vato!

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    :lol3
    #39
  20. Manatee2000

    Manatee2000 Adventurer

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    I respect your answere but don't buy it. With all of the technology they have built into the bike this should not be an issue. The technology BMW motercycles is using is cheep because it has been proven in other industries for years. To some extent they are cutting edge for motercycles but other indistires they are way behind the technology curve which admidtly is not the worst thing. Auto industire have used the oil cooled engines and lots of race applications have used the same technology.

    It all comes down the the thermostat and how well it was designed.
    #40