Originally Posted By: atikovi
Doesn't the cooler have a thermostat? And the idea that oil that doesn't get above 150 won't boil off water is nonsense. The oil temperature is just an average from where the sensor is taking a reading. Wherever the oil comes into contact with bearings, pistons, cylinder walls, etc. whose parts are well over 212, will allow any water to vaporize.
Originally Posted By: Coprolite
I believe that you need a thermostat if you don't have one installed. This would allow the engine to use the cooler to keep the oil from getting too hot (e.g. on the track) but allow optimal operative minimum temperature to be attained in normal driving.
Superman and Batman don't wander around ready to fight, they rise to the demand when called upon.
Don't ask me where that illustration came from... I don't know.
That's a great analogy!
Originally Posted By: mightymousetech
In your original post, you said
Quote:
200F Mishimoto thermostatic sandwich plate
. Is there a thermostat in there?
The sandwich plate between the block and oil filter currently has a thermostat in it. It came with a 180F thermostat and I replaced it with a 200F thermostat. However, thermostats in oil cooling systems like this always allow some flow regardless of oil temperature. From what I understand, this is required to prevent air lock.
So, to restate the current situation, the oil cooler is controlled by a 200F thermostat that has some fluid leak by at all temperatures for safety. On top of that, I tape over the entire exposed area of the oil cooler on public roads to try and keep air from passing through. Despite this, oil temperatures off of the track rarely exceed 155F and are typically in the 140-150F range.
I've been searching around some more and, according to the section on oil pressure in the factory service manual, Honda indicates that an oil temperature of 176F is operating temperature. 176F(80C) is also the same temperature as the thermostat in the water cooling system. I'm guessing that the drop in oil temperature that I'm currently seeing is purely due to the amount of energy lost from the leak-by oil.
Doesn't the cooler have a thermostat? And the idea that oil that doesn't get above 150 won't boil off water is nonsense. The oil temperature is just an average from where the sensor is taking a reading. Wherever the oil comes into contact with bearings, pistons, cylinder walls, etc. whose parts are well over 212, will allow any water to vaporize.
Originally Posted By: Coprolite
I believe that you need a thermostat if you don't have one installed. This would allow the engine to use the cooler to keep the oil from getting too hot (e.g. on the track) but allow optimal operative minimum temperature to be attained in normal driving.
Superman and Batman don't wander around ready to fight, they rise to the demand when called upon.
Don't ask me where that illustration came from... I don't know.
That's a great analogy!
Originally Posted By: mightymousetech
In your original post, you said
Quote:
200F Mishimoto thermostatic sandwich plate
. Is there a thermostat in there?
The sandwich plate between the block and oil filter currently has a thermostat in it. It came with a 180F thermostat and I replaced it with a 200F thermostat. However, thermostats in oil cooling systems like this always allow some flow regardless of oil temperature. From what I understand, this is required to prevent air lock.
So, to restate the current situation, the oil cooler is controlled by a 200F thermostat that has some fluid leak by at all temperatures for safety. On top of that, I tape over the entire exposed area of the oil cooler on public roads to try and keep air from passing through. Despite this, oil temperatures off of the track rarely exceed 155F and are typically in the 140-150F range.
I've been searching around some more and, according to the section on oil pressure in the factory service manual, Honda indicates that an oil temperature of 176F is operating temperature. 176F(80C) is also the same temperature as the thermostat in the water cooling system. I'm guessing that the drop in oil temperature that I'm currently seeing is purely due to the amount of energy lost from the leak-by oil.
