Porsche's 360-HP 2.5-Liter Turbo Flat-Four
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Global fuel economy standards have handcuffed automakers to efficient powertrain programs, and smaller-displacement four-cylinder engines are a part of the mass movement. That doesnΆt mean corporations are going to dumb down the fun factor, and word is that Porsche has received approval for its own, brand-specific 2.5-liter flat-four with 360 horsepower.
To help alleviate engine R&D costs, Porsche is already sharing parts with sister marques Audi and Volkswagen. In preparation for its baby roadster, which will slide into the lineup beneath the Boxster, a horizontally opposed four-cylinder was already under development. This engine is reported to have 1.9 liters, a turbocharger, and 210 horsepower with 215 pound-feet of torque. Apparently, thereΆs more to the four-cylinder tale.
An Autocar report uncovered the presence of another Porsche mill, earned only after allegedly winning an internal argument with the biggest corporate brass. AutocarΆs sources say the turbocharged 2.5-liter flat-four (presumably water-cooled) is good for around 360 horsepower. It wonΆt be shared with an Audi or Volkswagen.
In an Autocar interview with Porsche R&D chief Wolfgang Durheimer at the Detroit Auto Show, he mentioned a four-cylinder boxer that “can be applied” to the Boxster and Cayman. As any Porsche aficionado will realize, the 360-horsepower output is more than any of the six-cylinders currently installed in the Boxster and Cayman.
According to Durheimer, the new turbo boxer “could be applied if necessary to the 911. Our decision is, on the 911 side, weΆll stay with the flat [six]. But there are opportunities for the future.”
So where does that leave us now? At the moment, and if the sources turn out to be correct, PorscheΆs baby roadster (reputedly attached to the storied 550 moniker) could offer either or both a 1.9-liter and 2.5-liter boxer. The later Boxster/Cayman may all have 360 horsepower in a couple years.
And can we imagine a 911 with a four-cylinder mounted on and behind the rear axle? Answer: As much as we can see sport sedans, SUVs, and mid-engined roadsters wearing the Porsche crest. DonΆt expect a complete drubbing of the famous high-output 911 flat-sixes though. ThereΆs still heritage to uphold.
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