Despite the look, this is not a G-Model, but a nicely converted 964. First, let’s see what this 911 kit is all about. Fellten set it upon itself to deliver a “proper” complete kit … meaning absolutely everything is included to convert a 964 or G-body Classic 911. More importantly, it has been developed to allow full reversibility should anyone want to refit the original flat-six. No cutting or welding is required, keeping this classic and the Vehicle Licensing Agency happy and, simply because, on vehicles like this, this is the right thing to do.
Motor
The main parts are the battery boxes, onboard charger, and the electric motor. The latter comes as an upgraded and fully serviced Tesla large-drive unit. Borrowed from a Model S, it received a Quaife ATB limited-slip differential. It has been enhanced with a modified control board from Felten unlocking the unit’s full potential with 328kW/440hp and 460Nm/339lb-ft. That is what gives our 911 its tire-slaying superpower!
Battery
Two battery packs are spread across the 911, totaling a 62kWh capacity. Controlled and monitored by a Fellten system and Orion battery management, they run at 350-Volt and peak at 1,200 Amps. Thanks to proprietary liquid cooling plates, they can handle the requirements of the Tesla drive unit without breaking a sweat. The system also incorporates two cooling systems. One serves the battery pack, the second the drive unit. These use off-the-shelf components for easy servicing and, here again, come with pre-made piping and wiring.
Fast Charging
With a 200-mile range, there is no risk of suffering from range anxiety, even if you thrash the 911 to check its claimed 4.1 seconds zero to 60 times, as we have been. But the CCS Type 1 or Type 2 fast charging ability is a game changer. You can genuinely drive your retrofitted classic car anywhere a brand new EV would take you—fast charging allows 0 to 80% in 60 minutes
Interior
The interior is covered in caramel leather, down to the kick panels. Even the dash receives the lovely woven leatherwork. My favorite bit might be the billet gearstick knob. Of course, there’s no gearbox here, but this F/N/R billet aluminum selector does look the business and still offers that analog feel when you put it in Drive. Porsche 964s are renowned for their troublesome heating system. So Fellten and Classic Retrofit have partnered to bring an upgraded system that replaces the original HVAC entirely and offers better heating and an efficient AC, thanks to ceramic heaters and new fans.
SPECS
Car: Porsche 911 (964)
Time to convert: 100 hours
Cost: $78,000 Fellten system only
Motor Swap: Fellten
Motor: Tesla Model S with Fellten controller
Power: 328kW/440hp
Torque: 460Nm/339lb-ft
Control Software: Fellten on Orion BMS
Battery pack(s): 62kWh
Amp-hours: 155Ah
Volts: 350 Nominal
Gears/Ratio: 9.73:1
Axles: Tesla Model S Large Drive Unit
