toonbobo Posted March 12, 2016 Share Posted March 12, 2016 Hey everyone I'm interested to hear from everyone on what their reported running temperature is. I'm in the US so I'll be using Fahrenheit numbers Typically if I'm cruising on the freeway, my engine temp is about 100* higher than the ambient temperature. So if it's 55* my engine will be somewhere between 150-60. I noticed recently while lane splitting in 2nd gear in the 30mph range, the temperature climbed up to 190 or so when it was about 60 outside. And of course city riding, stop light to stop light, the temps will climb as well. This makes me wonder what kind of temps I'll have the hot summer months. After having the ECU flashed, the fan kicks on somewhere near 200*. It sounds like I may be stuck with the fan constantly running during the summer time, which seems annoying. Has anyone tried running Engine Ice or other aftermarket coolants to lower the engine temps? Link to comment Share on other sites More sharing options...
Premium Member n2shotokai Posted March 22, 2016 Premium Member Share Posted March 22, 2016 Bump, I have the same question. Any info? Link to comment Share on other sites More sharing options...
GoldenPenguin Posted March 22, 2016 Share Posted March 22, 2016 It's definitely worth a shot to try and swap out the coolant. You can also mail your ECU back to 2 wheel dynoworks and they can change when the fans kick on and off. 200 is totally fine, its when you get in the 230+ range that it becomes a problem. And at that point you have other problems. Also I'd rather replace a fan than an engine. Link to comment Share on other sites More sharing options...
Scooter426 Posted July 22, 2018 Share Posted July 22, 2018 I am curious too. I regularly see 200 deg F plus just sitting in traffic. It does drop right away after I get moving. Seems a bit high but I am sure it could go well above 210-215 and still not be a problem. What are some others seeing for typical temps while idling in traffic and underway? Link to comment Share on other sites More sharing options...
phpaul Posted July 22, 2018 Share Posted July 22, 2018 I am curious too. I regularly see 200 deg F plus just sitting in traffic. It does drop right away after I get moving. Seems a bit high but I am sure it could go well above 210-215 and still not be a problem. What are some others seeing for typical temps while idling in traffic and underway? I saw as high as 215 a couple of times and that's in MAINE fer cryin' out loud! Yeah, it was hot and humid (90's on both scales) but that makes me shudder to think what the guys in places like Texas and Arizona see. I had the fan set point dropped when I had the ECU flashed. Haven't ridden on a really hot day but haven't seen anything over 20x this year, and I've had the fan running when I pulled into the garage a couple of times. Link to comment Share on other sites More sharing options...
koth442 Posted July 22, 2018 Share Posted July 22, 2018 Yea, 200F is normal in traffic. Gets there quick. I live in rural Missouri with minimal traffic, but wait two cycles at a stop light and sure enough, I'm at 205F or more! '15 FJ09 Link to comment Share on other sites More sharing options...
Premium Member DavidS Posted July 22, 2018 Premium Member Share Posted July 22, 2018 When I changed my antifreeze the temperature of the engine went down quite a bit. If any of you that are experiencing high temperatures and haven't changed your antifreeze recently, I would start there. Link to comment Share on other sites More sharing options...
gerdawg Posted July 23, 2018 Share Posted July 23, 2018 Sounds completely normal to me. When the fans kick in the temps should go back down. Long as that's happening sounds about right. 2019 Yamaha Tracer 900 GT Link to comment Share on other sites More sharing options...
nhchris Posted July 23, 2018 Share Posted July 23, 2018 So far this summer I've been seeing 200+ on most rides when the bike is at a standstill. Once it is moving and air is flowing temps drop quickly. On a recent 600-mile ride in 90 degree wx I saw 215 briefly at a stop light. Which makes we wonder... where is the temp sensor in the cooling system? And because of its location might it give artificially high readings? The FJ radiator is BIG and quickly drops coolant temp once underway or when the fans come on. And the little FJ throws off a lot less heat than my old ST 1300. I actually don't display the temp any more cause it's a distraction to riding! cb 1968 Triumph Bonneville 650 1971 Norton Commando Roadster 2002 Harley 1200 Sportster 2003 Honda ST 1300 2016 FJ 09 Link to comment Share on other sites More sharing options...
norcal616 Posted July 23, 2018 Share Posted July 23, 2018 since im a 3rd shifter, my temps stay under 180° most nights/mornings... usually see 200-210° at the drag strip... 2012 wr250f - C-class 30+ age group 2015 fz-07- Hordpower Edition-80whp 2015 fj-09- Graves Exhaust w/Woolich tune by 2WDW @120whp Link to comment Share on other sites More sharing options...
Scooter426 Posted July 23, 2018 Share Posted July 23, 2018 Just an FYI, I used to use tape on the front of the radiator to regulate the temp of my race bikes since there was no thermostat. Cold days needed more tape, hot days - no tape. It reduces the frontal area of the radiator and warms things up. It is pretty common to have no thermostat on a race bike. Better flow, I guess. Link to comment Share on other sites More sharing options...
rlambke19 Posted July 23, 2018 Share Posted July 23, 2018 For what it’s worth, my Ninja 1000 ran the same way. Modern bikes have to run hot to burn off exhaust gases collected in the huge cats to meet more stringent emissions controls. The annoying thing about the Kawi was that the temp gauge was a linear bar gauge, meaning that every time the temp fluctuated even a bit, the gauge would move up or down. And you can’t turn it off. So it bounces up and down and gets very annoying/distracting. I would have rather a non-linear gauge (like in most modern cars) or an actual temperature readout like on the FJ/Tracer...especially one that can be “turned off”. Link to comment Share on other sites More sharing options...
HunterSon Posted July 23, 2018 Share Posted July 23, 2018 160 underway and 185 in traffic. Air temp rarely gets above 80 here. Link to comment Share on other sites More sharing options...
jmackd1 Posted July 25, 2018 Share Posted July 25, 2018 I just bought a new tracer 900 gt last week and my temps during break in and 109F Texas heat in traffic the fans come on at 220, the temp goes to about 222-223 then starts to go down.... Link to comment Share on other sites More sharing options...
chitown Posted July 25, 2018 Share Posted July 25, 2018 Sounds normal to me. Fan runs about the same as it does on my FJR. Don't find it annoying. Only notice it when waiting for a light to change. More data more problems Link to comment Share on other sites More sharing options...
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