More grip for your Porsche 993 Carrera [Wavetrac LSD Upgrade]

More grip for your Porsche 993 Carrera [Wavetrac LSD Upgrade]

Do you want to improve Classic Porsche’s traction and grip?

Billy, a long-time owner of this 993 Carrera is a familiar sight at car shows across the UK, tastefully modified with BBS LM wheels, Cargraphic exhaust, Gemballa bodykit and KW suspension to name a few of the upgrades. While the car has been enjoyed by Billy a lot over the years, a weak point Billy swanted to solve was its traction and handling under acceleration which is limited by the factory open differential, particularly in wet conditions and tight roundabouts.. Being that Billy has some future plans for more power, and his 993 is already struggling to put the power down, it was time to upgrade from the factory open differential to a limited slip differential.

MORE GRIP FOR YOUR PORSCHE 993 CARRERA [WAVETRAC LSD UPGRADE]

The problem

The factory open differentials lack of performance can be felt, mainly when you take a corner, for example a right corner, the right side of the car will become unloaded, and less traction will be available. When you press the throttle, the inside wheel will begin to slip, leaving you with an unstable feeling, and a frustrating feeling of a lack of acceleration. 


The reason this happens is the factory open differential has a torque bias ratio of 1:1. What this means is that the open differential can only apply as much drive torque as there is traction at one wheel. That is why you get a frustrating feeling, as the wheel with the most amount of traction has the amount of torque sent to it, that the wheel with the least traction can apply to the ground.

MORE GRIP FOR YOUR PORSCHE 993 CARRERA [WAVETRAC LSD UPGRADE]

The Solution

The Wavetrac Limited Slip Differential solves this problem. It can send up to 4.5x the drive torque as there is traction at one wheel. In the car this changes a feeling of frustration to enjoyment, where you can feel the outside wheel ‘pushing’ you around the corner rather than sliding from the inside wider. In a straight line, traction is improved too, especially as these cars have unequal length driveshafts, where power tends to reach the wheel with the shorter shaft first, leading to irregular tyre wear and under optimised acceleration.

MORE GRIP FOR YOUR PORSCHE 993 CARRERA [WAVETRAC LSD UPGRADE]

 

There’s a lot of Limited Slip Differentials out there, why choose the Wavetrac? One of Wavetrac’s key innovations is its patented "wave hub design," which solves a common issue with traditional ATB / geat and pinion / torque-biasing differentials. In standard setups, when one wheel loses axle load—such as when it spins, lifts off the ground, or unloads during hard cornering—the differential sends all the power to the unloaded wheel. However, the Wavetrac differential generates its own internal load, allowing it to maintain torque bias even under these conditions. This results in much more consistent traction, especially important for high-performance vehicles like the 993. Another patented innovation is the carbon fibre bias plates, the pinions rotate on these and were chosen to create a consistent friction surface for the lifetime of the differential, where other gear and pinion differentials allow the pinions to run directly on the housings, causing issues with polishing and in extreme situations material transfer.

Wavetrac differentials also come with the reassurance of a manufacturer backed transferrable lifetime warranty, offering both performance improvements and peace of mind for drivers looking to enhance their vehicle's handling capabilities.

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Watch the installation of the whole package in the video below: