Temperature range

randomwalk101 · February 22nd, 2011, 04:05 AM

Hey guys

Anyone knows what is our bikes' operating temperture range for water and oil is? Also what the max water temp and oil temp before the light comes on? Thanks

dubojr1 · February 22nd, 2011, 05:34 AM

Only spec I know is the the cooling fan should come on at 212 degree's

randomwalk101 · February 22nd, 2011, 05:36 AM

If memory serves right, oem water light comes on at around 228F. Not sure oil though. What's the normal temp range for oil in general?

dubojr1 · February 22nd, 2011, 05:53 AM

Quote:

Originally Posted by randomwalk101

If memory serves right, oem water light comes on at around 228F. Not sure oil though. What's the normal temp range for oil in general?

I believe anything below the "flashpoint" of the oil you use is acceptable. I would think 400 or less but I don't know for sure.

randomwalk101 · February 22nd, 2011, 05:54 AM

I may be wrong but if your engine oil is 400f your engine may be toasted?

dubojr1 · February 22nd, 2011, 06:00 AM

Quote:

Originally Posted by randomwalk101

I may be wrong but if your engine oil is 400f your engine may be toasted?

Ha... your right. A quick google search says optimum is 180-200 degree's and anything above 240 begins to damage the oil.

Weird as I used to race go-carts and and our oil temps back then were high 300's and was not uncommon to see low 400's. Guess that's just that particular race application.

DaBlue1 · February 22nd, 2011, 10:46 AM

For oil pressure testing purposes, kawa says the oil temp should be 194 degrees faren. @ 4000 rpms. Water temps avg. will range around 220-225 f. depending on conditions, but the warning light will come on above 230. If the water temp gets that hot, you can pretty much count on your oil being a little hotter than than the water temp. To burn off acids and water condensation in the oil, the oil temp should be above 180. Sustained oil temps above 250 will cause oil (conventional) to break down more quickly. Now that you have the Koso dash ou should be able to monitor your temps more closely, however I don't think you will be in any real danger zones unless you ride in desert type conditions alot.

randomwalk101 · February 22nd, 2011, 12:54 PM

Thanks guys. I guess I'll set oil temp light to come on at 200F and water temp to come on at 228F.

FrugalNinja250 · February 22nd, 2011, 01:06 PM

It's pretty common for oil to get hotter than the coolant. It doesn't reject heat as well and it goes places coolant can't go, like inside pistons, bearings, crank, etc. The cooling jacket only surrounds the cylinder head and the upper cylinder body; the crankcase and cam areas have no cooling. Heat transfers from the cylinder through metal to air, coolant, and oil. Air and coolant carry the heat away and the radiator can reject the coolant's heat, but the oil just stays in the engine.

randomwalk101 · February 22nd, 2011, 01:08 PM

Just got info from a good shop owner:

Water:230
Oil reg: 240
Synthetic:260

petiteninja · February 22nd, 2011, 01:33 PM

this is very useful information, i always wondered how hot was too hot. i have the daytona temperature gauge (hooked up to the water) and my bike reached a peak temperature of 217...and that was when i had been sitting in traffic on a hot and humid summer afternoon.

FrugalNinja250 · February 22nd, 2011, 02:30 PM

Quote:

Originally Posted by petiteninja

this is very useful information, i always wondered how hot was too hot. i have the daytona temperature gauge (hooked up to the water) and my bike reached a peak temperature of 217...and that was when i had been sitting in traffic on a hot and humid summer afternoon.

217°F is perfectly fine for modern cooling systems (modern being anything since the late 1970's). At atmospheric pressure a 50-50 mix of antifreeze and water boils at 225°F, but at 15psi (what our systems run at) it boils at nearly 260 degrees.

randomwalk101 · February 23rd, 2011, 08:42 PM

It's weird. Koso oil setting only max out at like 140 or somethig like that...hmm I'll set it at 199F to be safe for now

DaBlue1 · February 24th, 2011, 07:22 AM

Quote:

Originally Posted by randomwalk101

It's weird. Koso oil setting only max out at like 140 or somethig like that...hmm I'll set it at 199F to be safe for now

Range should be 140-248 for over temp warning setting.

randomwalk101 · February 24th, 2011, 08:48 AM

Yes, you're right...I mistyped. Anyhow, I guess that "synthetic: 260F" is wrong...I set mine to 198F and adjust as necessary. Need to wait for a hot summer day and see how far it goes up..then I guess I'll put it a few degrees above that.

DaBlue1 · February 24th, 2011, 09:55 AM

Quote:

Originally Posted by randomwalk101

Yes, you're right...I mistyped. Anyhow, I guess that "synthetic: 260F" is wrong...I set mine to 198F and adjust as necessary. Need to wait for a hot summer day and see how far it goes up..then I guess I'll put it a few degrees above that.

I doubt Koso made the program with synthetic oil in mind. 220-225 would be a safe number to set it at.

Cha0s00100 · February 28th, 2011, 04:06 PM

This is right out of the service manual . . . .

4-6 COOLING SYSTEM
Coolant Flow Chart

Permanent type antifreeze is used as a coolant to protect the cooling system from rust and corrosion.
When the engine starts, the water pump turns and the coolant circulates.
The thermostat is a wax pellet type which opens or closes with coolant temperature changes. The
thermostat continuously changes its valve opening to keep the coolant temperature at the proper level.
When coolant temperature is below 63.5 ∼ 66.5°C (146 ∼ 152°F), the thermostat closes so that the
coolant flow is restricted through the air bleeder hole, causing the engine to warm up more quickly.
When coolant temperature is more than 63.5 ∼ 66.5°C (146 ∼ 152°F), the thermostat opens and the
coolant flows.
When the coolant temperature goes up beyond 96 ∼ 100°C (205 ∼ 212°F), the radiator fan switch
conducts to operate the radiator fan. The radiator fan draws air through the radiator core when there
is not sufficient air flow such as at low speeds. This increases up the cooling action of the radiator.
When the temperature is below 91°C (196°F), the fan switch opens and the radiator fan stops.
In this way, this system controls the engine temperature within narrow limits where the engine operates
most efficiently even if the engine load varies.
The system is pressurized by the radiator cap to suppress boiling and the resultant air bubbles
which can cause engine overheating. As the engine warms up, the coolant in the radiator and the
water jacket expands. The excess coolant flows through the radiator cap and hose to the reserve tank
to be stored there temporarily. Conversely, as the engine cools down, the coolant in the radiator and
the water jacket contracts, and the stored coolant flows back to the radiator from the reserve tank.
The radiator cap has two valves. One is a pressure valve which holds the pressure in the system
when the engine is running. When the pressure exceeds 93 ∼ 123 kPa (0.95 ∼ 1.25 kgf/cm², 14 ∼ 18
psi) the pressure valve opens and releases the pressure to the reserve tank. As soon as pressure
escapes, the valve closes, and keeps the pressure at 93 ∼ 123 kPa (0.95 ∼ 1.25 kgf/cm², 14 ∼ 18 psi).
When the engine cools down, another small valve (vacuum valve) in the cap opens. As the coolant
cools, the coolant contracts to form a vacuum in the system. The vacuum valve opens and allows the
coolant from the reserve tank to enter the radiator.

February 22nd, 2011, 04:05 AM	#1
randomwalk101 self wrencher Name: john Location: houston Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.	Temperature range Hey guys Anyone knows what is our bikes' operating temperture range for water and oil is? Also what the max water temp and oil temp before the light comes on? Thanks

February 22nd, 2011, 05:34 AM	#2
dubojr1 ninjette.org certified postwhore Name: Jason Location: Jacksonville, Florida Join Date: May 2010 Motorcycle(s): 09 Ninja 250R SE, 07 Honda CRF230F, 06 Honda CRF150F Posts: A lot.	Only spec I know is the the cooling fan should come on at 212 degree's __________________________________________________ 09 250R SE: Paying it forward one post at a time! Don't forget to add yourself to our Member Map

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February 22nd, 2011, 05:36 AM	#3
randomwalk101 self wrencher Name: john Location: houston Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.	If memory serves right, oem water light comes on at around 228F. Not sure oil though. What's the normal temp range for oil in general?

February 22nd, 2011, 05:54 AM	#5
randomwalk101 self wrencher Name: john Location: houston Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.	I may be wrong but if your engine oil is 400f your engine may be toasted?

February 22nd, 2011, 10:46 AM	#7
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	For oil pressure testing purposes, kawa says the oil temp should be 194 degrees faren. @ 4000 rpms. Water temps avg. will range around 220-225 f. depending on conditions, but the warning light will come on above 230. If the water temp gets that hot, you can pretty much count on your oil being a little hotter than than the water temp. To burn off acids and water condensation in the oil, the oil temp should be above 180. Sustained oil temps above 250 will cause oil (conventional) to break down more quickly. Now that you have the Koso dash ou should be able to monitor your temps more closely, however I don't think you will be in any real danger zones unless you ride in desert type conditions alot.

February 22nd, 2011, 12:54 PM	#8
randomwalk101 self wrencher Name: john Location: houston Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.	Thanks guys. I guess I'll set oil temp light to come on at 200F and water temp to come on at 228F.

February 22nd, 2011, 01:06 PM	#9
FrugalNinja250 ninjette.org certified postwhore Name: Frugal Location: Dallas/Fort Worth (DFW) Join Date: Mar 2010 Motorcycle(s): Several Posts: A lot.	It's pretty common for oil to get hotter than the coolant. It doesn't reject heat as well and it goes places coolant can't go, like inside pistons, bearings, crank, etc. The cooling jacket only surrounds the cylinder head and the upper cylinder body; the crankcase and cam areas have no cooling. Heat transfers from the cylinder through metal to air, coolant, and oil. Air and coolant carry the heat away and the radiator can reject the coolant's heat, but the oil just stays in the engine.

February 22nd, 2011, 01:08 PM	#10
randomwalk101 self wrencher Name: john Location: houston Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.	Just got info from a good shop owner: Water:230 Oil reg: 240 Synthetic:260

February 22nd, 2011, 01:33 PM	#11
petiteninja ninjette.org member Name: LMG Location: nyc Join Date: Aug 2009 Motorcycle(s): '09 Ninja EX250J Posts: 177	this is very useful information, i always wondered how hot was too hot. i have the daytona temperature gauge (hooked up to the water) and my bike reached a peak temperature of 217...and that was when i had been sitting in traffic on a hot and humid summer afternoon.

February 23rd, 2011, 08:42 PM	#13
randomwalk101 self wrencher Name: john Location: houston Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.	It's weird. Koso oil setting only max out at like 140 or somethig like that...hmm I'll set it at 199F to be safe for now

February 24th, 2011, 08:48 AM	#15
randomwalk101 self wrencher Name: john Location: houston Join Date: Dec 2008 Motorcycle(s): 08 250r and 07 600r Posts: A lot.	Yes, you're right...I mistyped. Anyhow, I guess that "synthetic: 260F" is wrong...I set mine to 198F and adjust as necessary. Need to wait for a hot summer day and see how far it goes up..then I guess I'll put it a few degrees above that.

February 28th, 2011, 04:06 PM	#17
Cha0s00100 ninjette.org newbie Name: Dave Location: Toronto, Ontario, Canada Join Date: Feb 2011 Motorcycle(s): 2009 Kawasaki Ninja 250r Posts: 7	This is right out of the service manual . . . . 4-6 COOLING SYSTEM Coolant Flow Chart Permanent type antifreeze is used as a coolant to protect the cooling system from rust and corrosion. When the engine starts, the water pump turns and the coolant circulates. The thermostat is a wax pellet type which opens or closes with coolant temperature changes. The thermostat continuously changes its valve opening to keep the coolant temperature at the proper level. When coolant temperature is below 63.5 ∼ 66.5°C (146 ∼ 152°F), the thermostat closes so that the coolant flow is restricted through the air bleeder hole, causing the engine to warm up more quickly. When coolant temperature is more than 63.5 ∼ 66.5°C (146 ∼ 152°F), the thermostat opens and the coolant flows. When the coolant temperature goes up beyond 96 ∼ 100°C (205 ∼ 212°F), the radiator fan switch conducts to operate the radiator fan. The radiator fan draws air through the radiator core when there is not sufficient air flow such as at low speeds. This increases up the cooling action of the radiator. When the temperature is below 91°C (196°F), the fan switch opens and the radiator fan stops. In this way, this system controls the engine temperature within narrow limits where the engine operates most efficiently even if the engine load varies. The system is pressurized by the radiator cap to suppress boiling and the resultant air bubbles which can cause engine overheating. As the engine warms up, the coolant in the radiator and the water jacket expands. The excess coolant flows through the radiator cap and hose to the reserve tank to be stored there temporarily. Conversely, as the engine cools down, the coolant in the radiator and the water jacket contracts, and the stored coolant flows back to the radiator from the reserve tank. The radiator cap has two valves. One is a pressure valve which holds the pressure in the system when the engine is running. When the pressure exceeds 93 ∼ 123 kPa (0.95 ∼ 1.25 kgf/cm², 14 ∼ 18 psi) the pressure valve opens and releases the pressure to the reserve tank. As soon as pressure escapes, the valve closes, and keeps the pressure at 93 ∼ 123 kPa (0.95 ∼ 1.25 kgf/cm², 14 ∼ 18 psi). When the engine cools down, another small valve (vacuum valve) in the cap opens. As the coolant cools, the coolant contracts to form a vacuum in the system. The vacuum valve opens and allows the coolant from the reserve tank to enter the radiator.