XR650R Water temp

3 replies to this topic
  • Aokahn

Posted February 27, 2007 - 08:55 PM


Hello and I welcome myself to ThumperTalk.

I have been lurking for a few months and in January I picked up a CA plated 01 650R with the HRC kit, and a few other goodies. I have been tweaking the bike and am quite pleased with it.

Last weekend I installed a TrailTech Vapor. I was wondering what other people are seeing for their water temp? I have a new 180 degree thermostat and a 1.8 cap. I have been seeing the water temp around 220-240 doing highspeed/moderate-high RPM riding on a 75 degree day. This seemed a bit high to me and I checked the TrailTech sensor (boiling water) and it is dead on. The bike has not boiled over and runs great.

So, what are you guys seeing for water temps?



  • pburke

Posted February 27, 2007 - 08:59 PM


Hello and I welcome myself to ThumperTalk.

So, what are you guys seeing for water temps?



when riding smooth highway at moderate summer temps, long gearing, 50+mph, about 170-180 degrees, easy offraod at 20-30mph without much stopping or slow stuff maybe 190, stop and go in the city easily 210-220, heavy single trail use even hotter. I have engine ice in there, but stock thermostat.

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  • thouk

Posted February 27, 2007 - 09:18 PM


I did a lot of preventative maintenance on my bike these last two months. I did the oil and water pumps. I noticed on my bike with the Vapor on it would read about 220 when I was in the city traffic. I put the old radiator cap on it and also the Evans Npg coolant. I hope with my fan all the other stuff will allow it to run a long colder. I am in the process of finishing up installing the oil cooler also. If I could only get off of my rear and weld the two nuts on I would be finished. Have fun, Tony

  • sanjoh

Posted February 28, 2007 - 07:16 AM


Tight woods <10mph 225-240

Open trail 20-30 190-200

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