Doesn't seem right.
Ive got a K4 that sits about 62C and a K6 that sits about 72C, depending on ambient of course
But 100C? wow! Oil level and coolant level all good?????
Are you saying it is 27/32 at start up? If thats the case and your not in the Sahara desert I'd be looking at a sensor sending the wrong reading

 

Thanks for the guidance, yep, bought this bike with topped-up fluid levels and with a very recent service. I just checked that I am reading the gauge correctly - Degrees/Farenheight and it does show Centigrade. I think I will take it into a local Suzy-Dealer for re-assurance. Other than that - this bike is truly sensational.

 

From a cold start if the bike is left to idle, the temp will rise up to around 82 Deg C when the thermostat will first open, and the temp will then drop back to around 74 Deg C.

The thermostat will then be closed again, and the temp will begin to rise again.

But with no airflow across the radiator due to the bike being stationary if the bike is left to continue to idle, the temp will rise right up to around 105 deg C when the small electric fan will first kick in.

Now with airflow across the radiator from the small fan, the temp will start to drop and fall to around 95 - 97 deg C and the small electric fan will turn off. Completely normal.

As soon as you start riding continually above about 60km/h or more, the radiator will now have sufficient airflow to work correctly, and the bike should be cycling between around 74 deg C to 82 deg C as the thermostat open/closes continuously to maintain the correct temp. This is when 100 deg C is not normal and something is wrong if it's constantly sitting around 100 deg C while riding above 60km/h.

Why do OEM's allow the engine temps to go above 100 deg C...... it's to let all the condensation (ie water) that forms in the crankcases from cold starts fully evaporate off.

Also don't forget that the water/coolant isn't boiling at 100 deg C, as the cooling system is pressurized via the radiator cap , which greatly increases the boiling point to well above 100 Deg C.


So 100 Deg C is completely normal if the bike is idling stationary stuck in traffic or your constantly doing 40km/h or less.

The rest of the time while riding above 60km/h or more, the engine temp should be cycling between around 74 Deg C to 82 Deg C, regardless if its a freezing cold day, or a smoking hot 40 deg C + summer day.

 

To SSGSXR
Thank you so much for this explanation.
You are spot-on with what I am experiencing.
Yes, at slower speeds the temp does climb beyond 85 degrees, especially whilst filtering between lanes in heavy traffic.
Also, when parked up with the engine running the temp does hit 100-103 degress (I have not seen it go beyond this).
Also, when I am riding freely (and fast) the temp gauge fluctuates between 60-80 degrees.
Luckily, I can sleep peacefully knowing that 'my baby' is well!

 

"21 Challenger"? This isn't a car forum and you're in the L2-L6 1000 section instead of Anything Goes. If a bike, at stop lights it should rise reasonably quickly to 220 F, at which point the fan should come on and bring it down to 212 F. Then the fan should stop and the process repeat.

 

Un principiante assoluto in questo forum - Ciao a tutti,

Ho acquistato un L5 il mese scorso e la temperatura del motore sul display mostra 100°C e talvolta anche di più.
All'avviamento a freddo mattutino, l'indicatore della temperatura mostrerà 27/32 C e salirà man mano che il motore si riscalda.

E' normale o devo preoccuparmi?

Sono un po' vecchiotto e completamente non tecnico.
[/CITAZIONE]
Ciao io ho una suzuki GSX-R 1000 2014, la temperatura durante la marcia su strada e 65-70°C poi se entro in città a basse velocità sale a 100°C poi a 103-104°C si attacca la ventola per riabbassare la temperatura. Per cui stai tranquillo anche io ho avuto paura ma un mio amico che ha honda CBR-1000R ha la stessa temperatura e mi sono tranquillizzato.