UK-based race car constructor JRM has released a limited-edition, road-legal version of its Nissan GT-R GT3 car, dubbed the GT23, its moniker denoting the number of vehicles that are due to be built. The launch of the car has been timed to commemorate the 10th anniversary of JRM Motorsport Racing’s world championship win in the Nissan GT-R Nismo GT1.
“The objective of the JRM GT23 project was always could we road legalize a GT-R GT3 race car, based around the 2015 model year of the car, by making it friendly enough to be driven on the road but competent enough that you receive a genuine flavor of a race car when you take it to the track. The GT-R GT3 did not have flaws but it did have limitations,” explained Elliot Dason-Barber, JRM motorsport technical director
The car uses the same basic chassis layout as the GT3 car, including having the engine placed lower and further back in the chassis than the standard road car. It is rear-wheel drive rather than all-wheel drive, (the removal of the front differential and driveshafts allowing for the engine relocation).
The engine is also based on the GT3 racing unit, though without any restrictors, giving an output of 675bhp and the potential for 750bhp. The internals have been revised over the race-only version to extend its durability, with new pistons, conrods and camshaft specifications used. This is coupled to a six-speed sequential transmission. The suspension geometry has also been revised compared with the race version.