Online: softfat, crowster69

Engine heating problems

  • Dynabob
    Dynabob
    16 years ago

    Hi,  just a quick question...i know the 96 cu motors run HOT, and have heard there is an ECM modification for the rear cylinder to shut down on idle. Was wondering if anyone has had this mod done......

  • kingchops
    kingchops
    16 years ago
    I've heard that aftermarket ECM controllers reduce temperature in general but I'm sure some of the more technical guys on here can expand on that.
  • boofhead
    boofhead
    16 years ago
    The 06 tc88's have this too. I've had my bike pretty hot but haven't had this happen either.
  • BACAMICK
    BACAMICK
    16 years ago

    i recon its a usa thing with the heat , we may have diff setups ?????????

    i done 1800 ks on mine b4 i stript it down and never had a heat issue, had stage 1 b4 i pickt it up from shop

  • boofhead
    boofhead
    16 years ago

    Maybe you have to riding in a "parade" for that mode to kick in

     

  • Dynabob
    Dynabob
    16 years ago
    Thanks for the info....my leg gets a bit warm when i i sit at stop lights...over than that No other problems...
  • kensim
    kensim
    16 years ago
    what stix68 said is pretty right on ,for more info check this web site out www.nightrider.com.
  • JC&S34
    JC&S34
    16 years ago
    Ive got a SERT on my 07 Dyna. I dont understand enough about it yet to start changing maps but it definitely runs cooler at idle. From what I can gather 02 sensors are the source of high tempratures at idle. Regardless of the type of tuner used, if they are included in the system the air / fuel ratio defaults to 14.7 at idle because thats what the sensors tell it to do. To over come the problem you need to either eliminate them or fit wide band sensors thus allowing it to run richer at idle and this lowers the temprature. Another way is to wire a diode into the sensor wires and trick them into thinking the voltage is different and this allows an AFR of 14.2 though it really needs to be about 13.5 to 13.7. Nightrider. com has heaps of good info about the subject that specificaly relates to 07 models and I must admit that's where I got most of this stuff from. Dealers are supposed to have the latest maps available so I guess it depends on how old your bike is as to what map you have, but to really fix the problem the AFR needs to be lowered and without changing or eliminating the sensors I'm not too sure exactly how you achieve this.
  • boofhead
    boofhead
    16 years ago

    A couple of other cooling options if you are really worried about temps (and I have no experience with these, I just know they are available);

    Oil coolers - theres heaps of different types

    Cooling fan - goes where the horn is and blows air through the gap between the pots.

  • JC&S34
    JC&S34
    16 years ago
    Cooling fans and oil coolers are options that do work, however they only mask the fact that your engine is still running very hot. I'm pretty sure that in the SERT there must be a way of adjusting the temp at which the CO2 sensors switch between open and closed loop. If I can can work that out then the AFR can be lowered to about 13.7. I may be on a completely wrong track to find a cure but from what I can gather the SERT is a really high tech tool and my idea should work.
  • GREG
    GREG
    16 years ago
    More info if ya don't mind stix!!!
  • Trusty1
    Trusty1
    16 years ago

    G;day Fellas,

     

    I don't know about the heat issues, but between Stix and Greg, we have got the Avatar awards covered. I love it when you two post together. Keep up the good work!!

    T1