Exhaust glowing BRIGHT red..

25 replies to this topic
  • XriderR00

Posted March 30, 2005 - 11:45 AM


Someone needs to make a sticky, seriously

  • Guest_BrandonV_*

Posted March 31, 2005 - 07:49 AM


I just replaced my old Ti DSP system yesterday with a FMF powerbomb and Q muffler. It started right up and within a minute was glowing red like a mo fo. Never did the open Ti system glow or get anywhere near this hot, I couldn't even put my hand near that header. I'm not sure if Ti dissipates heat better or the open system just ran cooler, but I was a little surprised to see my header glowing like lava. I think a heat shield may be in order.

  • yz400guy3

Posted February 17, 2014 - 10:25 PM


everyone on here says this is completely normal, which it is but does anyone know the reason why yamahas all get so hot? is it running to lean? or to rich? or does it have something to do with the hot start?  :banana:  :confused:

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  • grayracer513

Posted February 18, 2014 - 07:28 AM


It is the result of a combination of aggressive cam timing, a fairly high idle speed, and relatively retarded ignition timing at idle. 

  • bdeemo

Posted February 19, 2014 - 12:40 PM


Normal, although if its really bad it could be jetting

  • Kqwackey101

Posted May 08, 2014 - 08:32 PM


Ok so i am going to assume the header turning cherry red is a common thing with the 426f
But the thing i can not fathom is why the water temp does not exceed 180°on my machine while sitting at an idle yet i can have smores at 6 am in the morning .

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