![[photo of A/C components]](/images/ac_bits.jpg)
The Evo becomes more ill-mannered, impractical and uncomfortable a road-going car—and a better race car:
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The new Cobra Imola racing seat I installed was a bit too high, and (according to the strict interpretation of SCCA rules) would have required a seat back brace, so I removed the adjustable seat rails and bolted down the seat straight to the bracket that’s bolted directly to the car. So unless you’re 5’7″, give or take an inch, you can’t drive my car.
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At the same time as installing the seat, I removed the factory seat belts since they wouldn’t really work with the seat. Getting in and out of the car is something of a minor production that takes a few minutes to buckle and tighten all the belts on the six-point racing harnesses.
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I replaced almost all the suspension bushings with stiffer polyurethane pieces; now the car has a harsher ride than ever before, and there’s an entirely new cacophony of noise from the suspension and drivetrain.
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I inadvertently put a hole in my radiator a few weeks ago while working on the car. I had the radiator fixed, but a pinhole leak remained, and I decided that just to be safe, I’d best get a new radiator. I opted for a Koyo racing radiator which is larger and has better cooling capacity than the stock unit—and costs about half as much.
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In order to make room for a larger Koyo radiator, I removed the air conditioning yesterday. I went through most of last summer without using A/C to prove that I could live without it. Of course that’s much easier now that I drive the Miata on a daily basis.
Next up: we spent a few hours trying to tune the Evo to make more power, but it had some strange problems with the turbo and/or engine not running quite right: inconsistent air/fuel ratios, irregular boost build-up, and a frequent tendency to misfire while accelerating at partial throttle. I’m slowly working through all the possibilities, and hopefully everything will be fixed soon enough. Or as I like to say, “I’ve got more time, money and determination than the car has problems.”