The E-BCNR33 (R33) was developed in 1995 as a successor to the R32 model. The engine in the R33 was nearly identical to the R32. It used the same turbochargers and the same specification for the manual gearbox, although the syncros were made to be stronger. The engine corrected the R32's weak oil pump drive collar, which tended to fail in higher power applications, with a wider collar. The base model R33 GT-R weighs 1,540 kg / 3,400 lb).
The R33 GT-R launched in January 1995 with the base model GT-R and the V-spec model. The V-spec model weighed in 10 kg / 22 lb) heavier, and had sportier suspension resulting in lower ground clearance. The V-spec also featured the newer ATTESA E-TS Pro all wheel drive system, which included an Active Limited Slip differential. The V-spec model also included a four wheel independent channel anti-lock braking system.
At the same time as the release of the R33 GT-R and GT-R V-spec, Nissan released the R33 GT-R V-spec N1 model. Changes made in the R33 N1 are similar to those in the R32 N1. The car was made lighter by removing the ABS, air conditioning, sound system, rear wiper and trunk carpet. The R33 GT-R V-spec N1 received the slightly revised R33 N1 engine.
Source: Wikipedia (original)