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  1. Mazda Miata NB Oil Cooler R&D, Part 4: On-Road Testing

    Mazda Miata NB Oil Cooler R&D, Part 4: On-Road Testing

    Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below.

    Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale!

    Our idle warmup provided a nice baseline test to evaluate the benefit of the stock liquid-to-liquid oil cooler. From what we saw in the conditions of our first test, warmup is not greatly affected by this component. In this second portion of product testing, we will be evaluating the impact of this heat exchanger on cooling performance. More importantly, we will be evaluating the cooling benefits of our liquid-to-air cooler.

    Testing Plans

    Variations

    • Stock liquid-to-liquid heat exchanger
    • Mishimoto oil cooler setup
    • Mishimoto oil cooler setup plus stock liquid-to-liquid heat exchanger

    By testing the Mishimoto oil cooler both with and without the stock heat exchanger, we

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  2. Mazda Miata (NB) Oil Cooler R&D, Part 3: Oil Warm-Up Testing

    Mazda Miata (NB) Oil Cooler R&D, Part 3: Oil Warm-Up Testing

    Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below.

    Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale!

    During the previous articles we mentioned that we would be conducting experiments for the stock oil cooler/warmer. Myths and claims exist regarding its impact on the heating of engine oil as well as its impact on cooling. We decided to check out both sides of the spectrum and support them with some actual data. First up, warm-up speed both with and without the stock heat exchanger.

    Testing Setup

    Setting up the sensors and equipment for this test was relatively simple. For testing the system with the stock heat exchanger in place, we simply installed our oil sensor adapter below the filter and then installed our temperature sensor. Below is a look at the sensor adapter.

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  3. Mazda Miata (NB) Oil Cooler R&D, Part 2: Oil Cooler Shroud and Duct Development

    Mazda Miata (NB) Oil Cooler R&D, Part 2: Oil Cooler Shroud and Duct Development

    Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below.

    Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale!

    In our last segment, we outlined the goals of the project, and we started fabricating mounting brackets to position our heat exchanger under the front of the Miata NB (second generation). We also hinted at the use of shrouding to direct airflow properly through our cooler.

    Optimal airflow through a heat exchanger is vital to the efficiency derived from an oil cooler system. In addition, we see value in retaining the stock engine undertray, which aids in the proper regulation of coolant temperatures. We will build our air duct into the undertray, with the goal of a stock-like appearance on the top of our list, right next to optimal airflow.

    Air Duct Fabrication

    First, we needed to create some space to fit our ducting. We ordered

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  4. NB Miata Oil Cooler R&D, Part 1: Intro and Bracket Fabrication

    NB Miata Oil Cooler R&D, Part 1: Intro and Bracket Fabrication

    Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below.

    Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale!

    The Mazda Miata MX-5 is the most-raced production vehicle in the world. It's a great top-down cruiser, features low entry-level pricing, and it's inexpensive to modify and repair. Fuel mileage is fantastic. Saying the Miata is the end-all and be-all vehicle would be a stretch (it has its limitations), but it is one hell of a car and an amazing bang-for-your buck regardless of use. If you do not understand any of this, I urge you to go out and drive one of these cars. If you've already driven one and still don't get it, perhaps you need to try again.

    In all seriousness, the Miata is a fantastic car that deserves attention from the aftermarket. We offer a variety of cooling components for the NA/NB models, including several aluminum radiator options, electric

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