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Jeep Wrangler JL Transmission Cooler 2018+

  1. Steal the Limelight - Transmission Cooler R&D, Part 2: Design

    Steal the Limelight - Transmission Cooler R&D, Part 2: Design

    Posted: August 26, 2020
    Categories: Jeep Wrangler JL Transmission Cooler 2018+

    Despite its simple appearance, improving upon the stock 2018+ Jeep Wrangler JL transmission cooler will take some clever engineering. In many cases, the solution to extracting more efficiency from a heat exchanger is to make it bigger, but with the cramped cooling stack of the JL, the size of our cooler would be limited.

    In our last post, we looked at the stock 2018+ Jeep Wrangler JL transmission cooler and its home in the 2.0L Wrangler. Our performance trans cooler will fit all of the available engines and the 2020+ Gladiator, but the complexity of the 2.0T's cooling stack makes it the perfect R&D vehicle. That complexity also restricts how much we can change the dimensions

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  2. Steal the Limelight - Transmission Cooler R&D, Part 3: Testing

    Steal the Limelight - Transmission Cooler R&D, Part 3: Testing

    Posted: August 11, 2020
    Categories: Jeep Wrangler JL Transmission Cooler 2018+

    When we last saw our 2018+ Jeep Wrangler JL performance transmission cooler, it was nothing more than a box, constructed from aluminum u-channel, with plastic end tanks glued to it. This time, however, we'll be getting our hands on a fully functioning production sample.

    In our last post, we began the design process for our performance transmission cooler and created a prototype. Thanks to the JL's cramped cooling stack, our ability to enlarge the transmission cooler was severely limited in the vertical and horizontal planes. However, we were able to significantly increase the thickness of the core from 19mm to 32mm. This 68% increase

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  3. Steal the Limelight - Transmission Cooler R&D, Part 1: Stock Review

    Steal the Limelight - Transmission Cooler R&D, Part 1: Stock Review

    Posted: July 15, 2020
    Categories: Jeep Wrangler JL Transmission Cooler 2018+

    Engines get a lot of press these days. Every manufacturer wants to flaunt their latest, most fuel-efficient, technologically advanced, or powerful engine yet. The hype is even more prominent when manufacturers make drastic changes to a long-standing model, like the 2018+ Jeep Wrangler.

    When FCA announced the 2018+ Wrangler JL in late 2017, all the journalists were clamoring for headlines on the new 2.0L, turbocharged, mild-hybrid engine. How would the mild hybrid perform offroad? Would the turbo lag make it a dog in stop and go traffic? What about that 24-volt power system? Everybody forgot about the 3.6L Pentastar that's powered the Wrangler, and over 20 other models, for almost a decade. But the 3.6L Pentastar wasn't the only thing forgotten in the fanfare over the new 2.0T.

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