transmission question..
12-31-07, 01:29 AM
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Rotary Ninja
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Location: Wichita Falls, TX
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This is covered in the FAQ sticky at the top of the 3rd gen thread, but since im bored all copy and paste it for you
21) Is a 6 speed transmission an option?
There are no drop-in 6 speed transmission options for the FD. However, it should be known that 6 speed transmissions are becoming popular with new cars to improve highway fuel economy, not performance. An RX-8 6-speed transmission will not bolt up directly and is not designed for the torque of a modified or even stock FD. Because of the cost, limited advantages, and the fact that the stock gearbox generally works well, 6-speed upgrades remain uncommon. Differential final drive ratio and lower-ratio 5th gear are more practical drivetrain mods.
That said, the 6 speed upgrade options come in various configurations from HKS, Trust/GREX, G-Force, Guru, Quaife, Borg-Warner, and Hewland. Most use straight-cut gears and dog-box engagement. This results in more noise, harsher shifts, and more frequent servicing. These kits run from $3k to 15k and involve some modification for installation. Here is one example of an install.
There are no drop-in 6 speed transmission options for the FD. However, it should be known that 6 speed transmissions are becoming popular with new cars to improve highway fuel economy, not performance. An RX-8 6-speed transmission will not bolt up directly and is not designed for the torque of a modified or even stock FD. Because of the cost, limited advantages, and the fact that the stock gearbox generally works well, 6-speed upgrades remain uncommon. Differential final drive ratio and lower-ratio 5th gear are more practical drivetrain mods.
That said, the 6 speed upgrade options come in various configurations from HKS, Trust/GREX, G-Force, Guru, Quaife, Borg-Warner, and Hewland. Most use straight-cut gears and dog-box engagement. This results in more noise, harsher shifts, and more frequent servicing. These kits run from $3k to 15k and involve some modification for installation. Here is one example of an install.
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MILOS7
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10-09-15 02:19 AM