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So I was taking a look at some diagrams on the Lexus' parts website, and I stumbled across the engine oil cooler. Now I know that the IS F has a transmission AND engine oil cooler, and that got me thinking. None of the diagrams I've seen show me where the oil goes to be cooled. I know it goes through the oil pump, but I can't seem to find out where the oil cooler radiator is. Can someone send a picture of where the oil cooler radiator is, if there is one at all?
I know those lines (lines circled in red) lead to a radiator of some sort for the oil to be cooled in, but where is this oil cooler radiator? I saw also saw this image here:
Now I do know that the lines lead to a radiator of some sort, but I just don't know where that radiator is. If anyone could help, please do!
I'm quite sure there is no oil cooler radiator. The OEM oil "cooler" is a heat exchanger between the oil and coolant. They both run through that doughnut and assuming the coolant is cooler then the oil is thus cooled slightly.
It's a fairly common system which also helps to heat the oil up to idle temps faster in cold weather. It was this way on my S2000 as well.
Source: Installed the RR Racing oil cooler and had no OEM oil cooing rad to replace.
I'm quite sure there is no oil cooler radiator. The OEM oil "cooler" is a heat exchanger between the oil and coolant. They both run through that doughnut and assuming the coolant is cooler then the oil is thus cooled slightly.
It's a fairly common system which also helps to heat the oil up to idle temps faster in cold weather. It was this way on my S2000 as well.
Source: Installed the RR Racing oil cooler and had no OEM oil cooing rad to replace.
So you're saying that the OEM heat exchanger is inside the housing, unlike the transmission cooler?
I've read that already. The thing is, I don't understand the diagram. Is the cooler core inside the 'donut' as it's called? If so, how does it get fed coolant?
I am sort of confused, because if the core is inside the donut, how does it get fed oil?
Read. Learn. This is really simple physics. The first of these for Toyota was used on the '93 Supra.
GS F and RC F use both coolant and air heat exchangers for the oil.
Yo man thanks so much, that must have taken a lot of digging to find! I salute you! That actually makes a lot of sense now. For some reason, I couldn't find the accurate description of it! This image actually helps a lot. I now understand what the core idea is about. Thanks a lot!
Read. Learn. This is really simple physics. The first of these for Toyota was used on the '93 Supra.
GS F and RC F use both coolant and air heat exchangers for the oil.
And just one question: How does the oil flow through the center of the cooler? There is a bolt that goes right through there. Let me express what I'm trying to say:
How does the oil flow through an area where the bolt goes to? The bolt would stop the flow. Or does the oil flow in a tube beside the bolt?
The bolt is hollow and has holes at the top to allow oil flow from the end closest to the bolt head. The oil flows back through the cores the same as any spin on oil filter and has a big o-ring sealing the heat exchanger to the oil filter body.
The oil enters and exits the oil filter body where you see the two o-rings at the top. There are corresponding holes in the block that go to the pick up tube and to the main oil galley. This should be pretty clear from the GS F diagram.
The bolt is hollow and has holes at the top to allow oil flow from the end closest to the bolt head. The oil flows back through the cores the same as any spin on oil filter and has a big o-ring sealing the heat exchanger to the oil filter body.
The oil enters and exits the oil filter body where you see the two o-rings at the top. There are corresponding holes in the block that go to the pick up tube and to the main oil galley. This should be pretty clear from the GS F diagram.
Alright, thanks for clarifying that. Sorry if it seems like I'm stupid :/
02-08-20, 07:29 AM
IS F engine oil cooler
That actually makes a lot of sense now. For some reason, I couldn't find the accurate description of it! This image actually helps a lot. I now understand what the core idea is about. Thanks a lot!
