Porsche has been testing for quite some time now the new GT4 version of the 718 Cayman but it appears that there are more six-cylinder models coming to the mid-engine Boxster and Cayman range.
Last time we spotted Porsche working on one of its six-cylinder mid-engine models other than the GT4 was back in February, with a 718 Boxster being then tested in cold-weather conditions. This time though we get both the Boxster and the Cayman in a more familiar territory, the Nurburgring.
The six-cylinder variants are also expected to employ the naturally aspirated 4.0-liter flat-six unit from the 911 GT3, albeit with less power than the upcoming 718 Cayman GT4. It’s believed that these new 718 Boxster and Cayman models will be positioned as the “Touring” versions of the hardcore Spyder and GT4 models respectively.
Porsche has reworked the naturally aspirated 4.0-liter flat-six engine to be compliant with the latest Euro 6d emission regulations, adding the necessary petrol particulate filters, new high-pressure injectors and new individual throttle bodies. The latest version of this screamer of an engine has debuted in the new 911 Speedster.
This will also mark the return of the six-cylinder engine back into the regular Boxster and Cayman, which after the 718 update were left available only with a pair of turbocharged flat-four units. And while these four-cylinder powertrains have made the compact Porsche sports cars faster than ever, many have criticized them heavily, mostly due to their boring, muffled soundtrack.
Reports suggest that the 4.0-liter flat-six engine in the Cayman GT4 and Boxster Spyder will be detuned to around 425hp, while the Touring models will get it with around 380hp. It’s safe to assume that the new ‘Touring’ six-pot models will become eventually available with both a PDK and a manual transmission.