Oil Temperature

Hakkim23

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i was making a point dumbass. You don’t even have a Supra. You just talking out of your ass. Gtfo. Nobody likes you on here.
You dumbass he ordered it so technically he does have a Supra even though he hasn't taken delivery of it
You should put your money where your mouth is




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fireball

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What I don't understand is why the coolant temp is so high on this car even at minimal load cruising. It seems to be about 111C . In all the cars I've ever owned, coolant was only 85-95C with normal driving and driving at the track under load it would only be about 100C at most. Does this car need a more efficient radiator?
 

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I just monitored different sensors for the first time with my MHD flasher. I've never seen an engine reach normal operating temperature so quickly. As soon as the temp gauge in the dash reaches four bars, which takes about two miles, both coolant and oil are 200 degrees.
I saw the same thing when I purchased mine. Very quick and pretty even ramp up of temp for both coolant and oil. Definitely not "normal" so I did some research and the B58c design flows a good bit of coolant through the exhaust manifold which is build into the head. This heats up the coolant really quickly, and in turn this hot coolant runs to a heat exchanger that warms up the oil very quickly. Relatively complicated system with low temp and high temp loops and electronically controlled instead of a old school thermostat. I changed to Redline 5w-40 and didn't see a reduction in the quick warm up temps for oil but still stayed below 275F during road course use.
Hate this tread got pretty much ruined...interesting topic.
 
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65sohc

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I came across this which explains the rapid warmup

"BMW has also stressed temperature management in the B58, BMW has incorporated an engine-mounted encapsulation system, which allows the engine to retain much of its heat for up to 36 hours which helps to reduce emissions and wear and tear during start-up, especially in colder climates."
 

racer01

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What I don't understand is why the coolant temp is so high on this car even at minimal load cruising. It seems to be about 111C . In all the cars I've ever owned, coolant was only 85-95C with normal driving and driving at the track under load it would only be about 100C at most. Does this car need a more efficient radiator?
The B58 (like many modern engines) is designed to run hotter for efficiency and fuel economy. The computer controlled cooling system would run 111C (~230F) no matter how "big" a cooling system you put on the car.
An interesting fact (to me at least) is the car doesn't have "a radiator" but rather 4 coolant heat exchangers in the nose of the car. Two main radiators sandwiched together in the traditional spot, and two aux coolers, one on each side of the nose.
Another interesting point is the car doesn't have a traditional air conditioning condenser in front of the radiator, but rather the condenser unit is cooled with coolant and sits behind the drivers side headlight. Pretty trick stuff....or "overly complicated modern crap that is unnecessary and just more stuff to break" depending on your point of view.
 

Twisted Tuning

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Does the B58 have Vtec? No? K then.
i mean technically the B58 has VTEC. its just called Valvetronic (valve lift) on the intake side. and the Vanos (cam timing) on the intake and exhaust. Vanos does use oil pressure, and Valvetronic uses an electric motor to actuate it. Valvetronic is used in a more advanced way on these engines than VTEC on hondas. but yea.


In reference to the oil and coolant, these cars have pretty advanced cooling systems where you can target certain temperatures rather than just having a t-stat open at a certain temp and etc.

I used the oil that came in the car for break in and since have moved to my usual 5w40 Schaeffer Oil as with all our builds.
 

Axix23

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i mean technically the B58 has VTEC. its just called Valvetronic (valve lift) on the intake side. and the Vanos (cam timing) on the intake and exhaust. Vanos does use oil pressure, and Valvetronic uses an electric motor to actuate it. Valvetronic is used in a more advanced way on these engines than VTEC on hondas. but yea.


In reference to the oil and coolant, these cars have pretty advanced cooling systems where you can target certain temperatures rather than just having a t-stat open at a certain temp and etc.

I used the oil that came in the car for break in and since have moved to my usual 5w40 Schaeffer Oil as with all our builds.
thanks!! lol :)
 

Rocksandblues

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I just noticed the same quick operating temp rise on JB4. I searched before starting new thread.
Couple points in a respectful manner.
Coming from a long line of turbo and modded bmws.
oil temp is paramount. Believe BMW was and is more concerned about oil temp before certain rpms for at least dozen years or more. And with good reason.
in fact several of my BMWs limited boost until certain OIL temps were reached.

fortunately for us the B58 heats up nice and quickly. My previous turbo took 4 times the distance before fully heating up and allowing full boost.

def change out the thin oil weight if you drive enthusiastically at all!
 
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65sohc

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I've noticed that on a datalog from 30-130 mph my oil temp is exactly the same beginning to end. 236 as I recall. In fact I thought I saw someone comment that during a 20 minute track session their oil temp actually dropped a bit, though maybe I am imagining things.
 

Paolo

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The B58 (like many modern engines) is designed to run hotter for efficiency and fuel economy. The computer controlled cooling system would run 111C (~230F) no matter how "big" a cooling system you put on the car.
An interesting fact (to me at least) is the car doesn't have "a radiator" but rather 4 coolant heat exchangers in the nose of the car. Two main radiators sandwiched together in the traditional spot, and two aux coolers, one on each side of the nose.
Another interesting point is the car doesn't have a traditional air conditioning condenser in front of the radiator, but rather the condenser unit is cooled with coolant and sits behind the drivers side headlight. Pretty trick stuff....or "overly complicated modern crap that is unnecessary and just more stuff to break" depending on your point of view.
That is a very interesting design for the condensor and radiator.
Thanks for sharing it. :thumbsup:
 

antonio88x

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I'm sure it has to do with the heat exchangers. That's what its for, to exchange heat :p
 

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