Everything bolts in, and they use the same driveshaft. You can swap this transmission into older cars with minimal effort-just make sure it comes with its shifter. Mazda produced its own unit for 2009-and-up models, and it’s much stronger. The 2004-’08 cars had an Aisin six-speed manual transmission, which is fine for street duty but not the best in a race environment. They improved the oil metering and the fuel-injection system to help reliability. Mazda made improvements throughout, but 2009 and up are the best years to buy. If you have a street car that is on track only part-time, I’d just put good pads on it and call it a day. We duct the front brakes on our race cars, but I know a lot of guys who don’t. You can run the supply line to a separate reservoir if you want to run different oil in the metering system, or you can block off the feed completely and pre-mix oil with your fuel. It’s hard to fool that system in the RX-8 because it’s electronic. The metering oil pump delivers a small amount of crankcase oil into the intake to lubricate the apex seals and other components. If you’re running in an area with high ambient temperatures, I recommend upgrading to a bigger radiator. When you go to a track, watch your oil consumption. The rotary will run at high rpm and has good reliability when it’s taken care of. That’s the big advantage of a rotary engine: It’s so compact, you can mount it very far back in the chassis. These cars have perfect 50/50 weight distribution. Dealers have a special tool with digital readout that can do this. The spark plug hole is going to give you the highest pressure of the three chambers, so you need a tool that will show the pressure in each chamber. Any rotary engine needs a special compression gauge. Telltale signs of a weak engine are oil smoke, overheating, and hard starting–especially once the engine is hot.īefore you buy, take it to a dealer to run a compression test. Check lemon law records, title history, and look at the warranty history to see if engines have been replaced. To avoid getting an RX-8 with a bad engine, it helps to know the history of the car.
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