IS500 AT Oil Cooler Kit
#31
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#33
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I chose to add a trans cooler because in non track, spirited summer driving temps were reaching 240-250 and even the pre production units had issues of overheating with the cooler in track use. So at least with the trans cooler I won't have that constant headache if the temps might get too hot. Heck even the Lexus service manual states that for high temp, prolonged driving an external cooler is recommended.
#37
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I am used to seeing at least 20-30 degree drops from adding a basic cooler. 10 degrees is small enough that I would be curious to see the details of their testing. Maybe the 10 degree number is a mistake.
#39
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I'm not sure if its only 10 degrees, I mean I am taking readings before and after I install it next week but I think it will be more than 10 degrees. I had said previously that my temps w/o any cooler ranged from 240-250.
#40
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Alright finally got the OEM trans cooler installed, the install went super smooth all in all the trans cooler install took about 1-2 hours, hardest part being removing all the panels, bumper, and under tray. I took plenty of pictures with cool details so instead of making a messy and long post I condensed everything into a nice pdf for everyone to check out. As I point out in the pdf, the car was actually made from the factory to have a trans cooler, they just put a closed loop where the trans cooler lines would've gone. Only modification required was to drill and rivet the crash bar and drill holes into the plastic shroud. It took about a half quart of additional fluid. Being that the ports to add trans cooler lines are already there it would also be very easy for companies to make aftermarket solutions, I believe RR Racing might be pursuing that route with a future trans cooler kit for this car. I will report back after the new year with real temp readings, I took some before readings and once the weather clears up I will take some after readings in the same temps/driving conditions. Also forgot to add, I was going to paint the cooler all black, but I made a quick F logo stencil and painted it that instead, so it doesn't come like that from Lexus.
Here is the link to the pdf: https://drive.google.com/file/d/1aQW...ew?usp=sharing
Here is the link to the pdf: https://drive.google.com/file/d/1aQW...ew?usp=sharing
The following 4 users liked this post by dk12:
The following users liked this post:
dk12 (12-23-22)
#43
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Yup their complete kit just went live and frankly I would’ve preferred to use the rr racing atf cooler just because it has double the cooling capacity. But at the time I got the oem cooler I had no clue if the lines tied in directly or if it required some special fittings. But after taking apart the car I saw that Lexus literally left a spot for an external cooler and just closed it off(pic in the pdf), so the rr racing cooler ties it straight to that.
#44
Intermediate
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Did you have any trouble with your front apron going back on. My concern if I do this install I will invite the front apron issue to cone right on in.
#45
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^^ I was thinking the same I am approaching almost 1-year since ownership & never experienced the Front-Apron issue (Knock on Wood). I am worried if I were to go the Trans-Cooler install route this will develop buy taking off & re-installing the front bumper. It's a gamble at this point.