At last, the all-new Porsche 718 Cayman GT4 is here! For starters, it packs an all-new 4.0-liter naturally aspirated flat-six. That鈥檚 right, in the era where only 10 percent of 911 variants are naturally aspirated, and 100 percent of the Cayman/Boxster lineup is turbocharged, the free-breathing Cayman GT4 (and its mechanically identical 2020 Boxster Spyder sibling) stands alone. The sublime first-gen GT4 pulled power from a 3.8-liter, 385-hp naturally aspirated six sourced from the 991.1 Carrera S, so there鈥檚 precedent for this 4.0-liter model. The lineage of the powertrain is a bit more muddled this time, though, as Porsche claims this is a completely new engine and not at all related to the wild 4.0-liter in the 991.2 GT3. Porsche tells us that this new powerplant is based on the 9A2 generation of engines that power the soon-to-be-replaced 991.2 Carreras. This is quite a leap from the regular 9A2, however, considering all 991.2s from base Carrera through Carrera GTS pack the same 3.0-liter twin-turbo flat-six.
At minimum, this new engine has had the turbos and attendant plumbing removed, its displacement enlarged by a full liter, and been packed with a new crankshaft, pistons, connecting rods, valvetrain, air intakes, and cylinder heads. Against this work, it was allegedly too costly and complex to make the GT3鈥檚 4.0-liter work here, which is hard to imagine. As to why the engineers in Flacht, where Porsche鈥檚 race cars and GT road cars are developed, stuck with natural aspiration, GT boss Andreas Preuninger says it鈥檚 sticking to its guns. There鈥檚 always a way and we will continue going the naturally aspirated route for GT cars. The right way is not always the easy way.鈥?Alright then. A total of 414 horsepower and 309 lb-ft of torque are sent to the rear wheels through a six-speed manual transmission sourced from the current 718 GTS. Porsche admits it has future plans to bring the snappy PDK dual-clutch automatic gearbox to the GT4, but for now, you鈥檒l need to shift it yourself or find another car.
Performance is strong, with the zero-to-60-mph run taking just 4.2 seconds and a top speed of 188 mph. There鈥檚 also a whole paddock鈥檚 worth of handling hardware to go along with the power. Porsche Active Suspension Management (PASM) with active dampers is standard, dropping the GT4 1.2 inches lower than the regular 718 Cayman. For the true track rats, the suspension allows for manual camber, toe, ride-height, and anti-roll-bar adjustments. Aesthetically, it鈥檚 a refreshed last-gen GT4, now wearing aggressive variations of the current 718 bodywork鈥攅ssentially what we pictured in our mind prior to its premiere. However, those good looks aren鈥檛 just for show; according to Preuninger, the updated rear wing and front diffuser help the car generate 50 percent more downforce than the last-gen model. It also doesn鈥檛 hurt that the wing and front diffuser are manually adjustable. We鈥檙e in love, but our bank accounts are bracing for impact. 16,000 jump over the previous car. Of course, this is also a more cohesive product, with more specific engineering and bespoke componentry. Order books are open now, with deliveries scheduled to begin next spring.
There鈥檚 four colours to choose from: Black, red, white, and - unique to the TCR - the gloss 鈥楶ure Grey鈥? The TCR鈥檚 interior gets a new microfibre/cloth upholstery on the seats complete with a red/grey colour scheme, while the steering wheel features extra red touches like the 12 o鈥檆lock marker and leather stitching. Prices are yet to be confirmed, but expect to pay around 拢34,000 when the car makes it to UK dealers in March. Unlike the Clubsport S, this won鈥檛 be a limited-run special, and both three- and five-door models will be offered. So where does the GTI TCR stand in the current hot hatch hierarchy? Today鈥檚 benchmark is the Civic Type R which, thanks to a delightful manual gearbox, will, for many, add a level of interaction which the Golf can鈥檛 beat. However, the Golf is almost as sharp yet more comfortable, has a better infotainment system and styling that鈥檚 less divisive.
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