Third Radiator Kit anyone?
#16
Originally Posted by 1999Porsche911
If your coolant temps ever reach 250F, you have some serious problems with the car and need more than a few extra radiators to correct it.
#17
Originally Posted by 1999Porsche911
If your coolant temps ever reach 250F, you have some serious problems with the car and need more than a few extra radiators to correct it.
I suspect they are saying 250º F for oil temperatures, and not coolant temps. Coolant temps in the 997s appear to stabilize at 175º F while oil temperatures vary with the load and environment.
#18
Originally Posted by Edgy01
I suspect they are saying 250º F for oil temperatures, and not coolant temps. Coolant temps in the 997s appear to stabilize at 175º F while oil temperatures vary with the load and environment.
#19
I apologize for confusing things above. I'm always so focused on oil temp, that I didn't make it clear I was referring to oil in my response. Indeed, 250 would be a bit warm for coolant. I've never had any temperature problems at all in this car, coolant or engine oil. My point is, don't add the extra radiator unless you need it.
#20
Also to condider is the additional hardware to break- the oil cooler is in a exposed
spot, a flying piece of debris from the road - and you may possible lose your oil pressure and engine.
I would vote against it unless you are mostly just tracking you car and really need it
spot, a flying piece of debris from the road - and you may possible lose your oil pressure and engine.
I would vote against it unless you are mostly just tracking you car and really need it
#21
Originally Posted by george_k
Also to condider is the additional hardware to break- the oil cooler is in a exposed
spot, a flying piece of debris from the road - and you may possible lose your oil pressure and engine.
I would vote against it unless you are mostly just tracking you car and really need it
spot, a flying piece of debris from the road - and you may possible lose your oil pressure and engine.
I would vote against it unless you are mostly just tracking you car and really need it
The oil cooler on the 997/997S is mounted safely on the right side of the engine under the intake manifold.
#22
Originally Posted by 1999Porsche911
The coolant temperature of the 997's DOES NOT stabilize at 175F. The thermostat does not even open until 182F. The targeted temperature is 194F.
How do you explain that? Is the gauge not precise?
#23
Originally Posted by Edgy01
My 997 has ALWAYS stabilized at 175F for my collant temp while my oil temps vary with the environmental and engine loading. I have NEVER seen my coolant temp ever above 175F.
How do you explain that? Is the gauge not precise?
How do you explain that? Is the gauge not precise?
Your temp gauge is wrong...it's as simple as that. The only time your coolant temperature will be 175 on a running engine is on its way to 200F.
#25
Originally Posted by Edgy01
My 997 has ALWAYS stabilized at 175F for my collant temp while my oil temps vary with the environmental and engine loading. I have NEVER seen my coolant temp ever above 175F.
How do you explain that? Is the gauge not precise?
How do you explain that? Is the gauge not precise?
Odd, isn't it?
Deanski
#26
Originally Posted by 1999Porsche911
The coolant temperature of the 997's DOES NOT stabilize at 175F. The thermostat does not even open until 182F. The targeted temperature is 194F.
I'd like to hear from others reading this thread to add their own coolant temp readings. SO far, two of us agree that the coolant stays at 175 for normal driving.
Deanski
#28
Originally Posted by John Velasco
I don't know about the 997 engine but the GT3 engine sticks the coolant temp at 175, now the oil temp is adjusted by my right foot and outside air temp...
#29
For the past 30 years thermostats have been calibrated to open at between 192° and 195° to help reduce emissions. Earlier model engines (pre 1970’s) normally had their thermostats calibrated to open at 180° with early non-pressurized systems as low as 160°.
My coolant temperature gauge also “reads” 175° when fully warmed up and it never budges no matter what the ambient air temperature, terrain or driving style but the oil temperature varies between a normal temperature of 200° up to 250° depending on ambient air temperature, terrain and driving style.
If the engine was truly operating at only 175° the coolant would never get hot enough to open the thermostat. My bet would be that the actual coolant operating temperature to be in the 195° to 220° range and the coolant temperature gauge is nothing more than a glorified idiot light.
My coolant temperature gauge also “reads” 175° when fully warmed up and it never budges no matter what the ambient air temperature, terrain or driving style but the oil temperature varies between a normal temperature of 200° up to 250° depending on ambient air temperature, terrain and driving style.
If the engine was truly operating at only 175° the coolant would never get hot enough to open the thermostat. My bet would be that the actual coolant operating temperature to be in the 195° to 220° range and the coolant temperature gauge is nothing more than a glorified idiot light.