overheating - Page 2 - KTM Duke 390 Forum
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post #11 of 93 Old 04-03-2014, 10:16 PM
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err does changing coolant to Engine Ice voids warranty? no right?
i had changed it yesterday ...but high coolant problem still persist this morning
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post #12 of 93 Old 04-04-2014, 02:08 AM
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Depends, some may argue its a change from factory recomendations while others may except it. Warranty is never cut and dry.
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post #13 of 93 Old 04-04-2014, 11:54 AM
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no it shouldnt unless your dealer is a real d1ck.
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post #14 of 93 Old 04-04-2014, 12:02 PM
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Quote:
Originally Posted by Dan1 View Post
Your onto something with this quote SM but Id have to say its not just the CAT that helps. The GPR Powercone actually dropped my temp by 4 bars, when I put it back on with the CAT included to try and muffle the noise it stayed the same. Although it was a very short test (5mins) I reckon the free flow was helping a lot.
We need Mitch's opinion regarding heat since he pulled his internals out.
good point Dan, from AOD's comment and looking at the service manual pictures I just reckoned that with the exhaust manifold exiting right under the rad a freer flowing exit would just help reduce the heat soak, which then works back in with your point of the water pump being over worked. I think its all roped in together, in a feedback loop, impeller over works, bike gets hotter, impeller is even more over worked.



plus I'm betting those rad hoses are getting plenty baked down around the header as well...
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post #15 of 93 Old 04-04-2014, 04:15 PM
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wrap the header ... my D390 V.2 is soo going to be wrapped ... the trapped heat is good for performance....

~ride as if you have stolen it~
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post #16 of 93 Old 04-05-2014, 03:01 AM
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i went to SC and they changed the radiator fan (free)
it wasnt working correctly, quite happy with the service given


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post #17 of 93 Old 04-06-2014, 02:30 AM Thread Starter
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Been in perth on business, flying back tonight so I might take it in to the dealer tomorrow
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post #18 of 93 Old 04-06-2014, 03:59 PM
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I'm having the same issue here in Sunny South Africa. The bike hates moving slow, which is quite frankly bullshit for a bike designed as a street fighter. If you have to move slow, try and keep it in 2nd gear minimum. I find having it in 1st gear causes the heat generated by the increased RPM to overwhelm the cooling system. That being said, having it in 2nd gear is only a temporary measure. The bike will still overheat in 2nd gear. In addition I find 30 km/h is the minimum required speed for the radiator to keep up with cooling, but again you have to be in 2nd gear - 1st cooks the engine.

On a side note, I think my fan is also giving up the ghost as I don't hear (and feel) the fan coming up when it's approaching the overheating portion of the gauge. Will be taking it to the dealer when I'm on leave to get them to find out what the **** is going on.
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post #19 of 93 Old 04-07-2014, 10:57 AM
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protip: if you dont feel your legs cooking in traffic, your fan isnt working properly
thats what the SC dude told me lol
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post #20 of 93 Old 04-07-2014, 01:12 PM
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wonder if its possible to upgrade to a larger or more powerful radiator and fan
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