The engine Nissan GT-R, for instance has been upped marginally with only 15hp (550hp) and 18Nm (630Nm) gains, but that is not the complete story. It is the first time since its launch that the GT-R’s 3.8 liter V6 twin-turbo engine has been uprated mechanically rather than just through a reconfigured ECU and exhaust package. The engineers at Nissan fitted a revised intake system, revised heads and new sodium-filled valves. They also added a larger intake duct for the turbos’ intercooler and better exhaust efficiency.
This all accounts for a marginal increase in power, which is not the main story here. It is the way the power is converted through the gearbox and the four-wheel-drive system. The new engine setup offers a cleaner conversion of power to the road, a better throttle response and greater energy higher up the rev range. In the end, the differences are hardly felt if you do not have the old and the new car placed back-to-back, but it shows the sheer competence of engineers to extend the capabilities of this beast.
Other differences are re-adjusted dampers, a suspension setup including a unique asymmetric suspension setting for RHD cars, and a front bulkhead which is stiffer. All in all, evolution rather than revolution, but completely following the goal of the development team offering upgrades and enhancements making an excellent sports car step by step better.
Published: Friday, July 19, 2013