Note the upgraded transaxle mounts above.
The 7:31 Ring/Pinion was chosen to compliment the selected gearing. The transitions of gearing works well with the peak torque band of the engine, getting the optimized power to the drive wheels.Race gears were carefully selected to give a setup that can run on both short and long tracks. That balanced approach also enhances the durability of the transaxle.
The ZF limited slip differential is about as close as you can get to a spooled differential, while keeping the handling of a LSD. The responsiveness is a joy, as is the stability and handling afforded by this well conceived drivetrain arrangement.
The CV joints have all been recently freshened, just to ensure reliability. The parts are like new, since there were no leaky seals for grit and dirt to damage the races or bearings. And for a few dollars more, all the boots were replaced as a precaution from failure. When maintenance is done thoroughly you can depend on the racecar to do its job.
Another great option on this racecar is the 930/turbo hubs and wide track suspension. That comes with more robust wheel bearings to support the forces of that wider footprint, and the pumped up torque and horsepower. This is the focal point of Porsche action, the rear wheels. The loads are enormous and the stress has to be addressed. More typical in a 911 is the use of thick wheel spacer to get the wider footprint, but the regular 911 wheel bearings are then compromised, and could let you down, spoiling a race weekend or worse.
The shifter is always an eye catcher in a racecar, and this one is a real blessing. The use of aircraft components in shift linkage is one of the many examples of quality. The well designed shift guard by Pro-Technic Racing lets you move between gears with total confidence. Being almost guaranteed that you will not miss a gear means a lot when in the heat of competition. This little enhancement pays off big time. Without it, you live with the anxiety of finding first when you are looking for third, or of finding fourth when you are looking for second. Beyond the anxiety is the loss of track position, and a damaging blow to your wallet if the missed shift bends valve stems or drives a valve into the piston. Hitting the wrong gear at a critical moment can immediately cause the car to spin, sending it into the wall, another car or off course. Much is contributed by this seemingly minor shifting device.
Overview:
. 7:31 R&P; Race gears
. External Oil Cooler, JWE squirters for each gearset
. Z F Limited Slip differential
. Turbo 930 drive axles, CV joints
. Turbo 930 Hubs & wheel Bearings
. Pro-Technic Shift guard
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