Porsche’s already working on the new 718 Cayman GT4,
which will reportedly use the 911 GT3’s naturally aspirated flat-six, albeit in
a slightly de-tuned form. However, if you’re the proud owner of the outgoing model, whether the
“normal” or the Clubsport version, and you would like to squeeze more power
without turning to supercharging or turbocharging, then you might want to
consider taking a look at DeMan Motorsport.
Based in New York, the shop is offering a few
upgrades for the Cayman GT4 and Cayman GT4 Clubsport, which include an
increased engine capacity from 3.8 to 4.25 liters. The flat-six also gets a new
crankshaft, custom pistons, stronger connecting rods and an ECU-tune, which
have lifted the output to 488 hp and 488 Nm,
according to RoadAndTrack – and those numbers have been measured at the wheels.
At the crank, it’s believed to put out 176 hp and 142 Nm of torque more than the stock engine. Also,
with those upgrades, the redline has increased to 8,000 rpm, and can be upped
by an additional 500 rpm with
titanium internals.
There’s a catch though, as the engine upgrade
doesn’t come cheap. It costs US$ 28,500, and that’s without the free-flowing exhaust
and Cobb access port, which are mandatory to extract the aforementioned output. Despite the steep price, DeMan
says that Cayman GT4 owners have already updated other aspects of their rides,
so the cost shouldn’t be a big problem.
This isn’t DeMan’s first upgrade for the Cayman GT4,
as they used to offer a 4.0-liter kit, but these new offerings are superior in
every aspect.
