I Found The Transmission In The New Mid-Engine Porsche 911 RSR

Photo Credit: Raphael Orlove
Photo Credit: Raphael Orlove

Porsche has been happy to announce that it has moved the engine in the 911 RSR race car from the rear to the middle of the car. Cool! But! Porsche was less keen to announce where the transmission went, but I found it hiding behind the engine as usual.

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Photo Credit: Raphael Orlove
Photo Credit: Raphael Orlove

See that disc shaped silver thing in the middle? That’s the car’s transaxle. It’s where a 911's engine traditionally sits, but it’s still in its usual spot in relation to the engine itself.

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This means Porsche flipped the whole engine/trans layout around, rather than just push the whole thing forward. And turning the engine around meant that Porsche had to come up with not only completely new mounts and packaging for the engine, but a whole new gearbox as well. It’s a cool unit, too, as Porsche described in its press release:

Six-speed sequential constant-mesh gearbox; two-shaft longitudinal layout with bevel gear; shifting via electronic shift actuator; shift paddles on the steering wheel; magnesium gearbox casing; multi-disc self-locking differential with visco unit; three disc carbon race clutch.

Porsche didn’t move the engine in the 911 RSR because it finally submitted to weight balance thinking laid out, ironically, first by Dr. Porsche in the years before WWII. No, moved it to make a truly gigantic rear diffuser. It’s in the aero war that the car is suffering against newcomers like the Ford GT.

Photo Credit: Raphael Orlove
Photo Credit: Raphael Orlove
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It’s amazing that the transmission was just small enough to fit with all of the car’s new packaging restraints. Leave it to Porsche, I guess.

CORRECTION: This article initiallyand incorrectly implied that Porsche 911 transmissions sit behind the engine. As a rear-engined car owner, this brings me great and personal shame. The article has now been clarified.

Raphael Orlove is features editor for Jalopnik.

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DISCUSSION

peppiniello
Peppiniello

Of course the engine has been flipped, otherwise you would see the engine, not the transmission. Here, have a coffee.