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). RB26DETT N1 is an upgraded version of the standard RB26DETT engine. It was developed by Nissan Kohki's REINIK division for NISMO and N1 race cars. The standard RB26DETT, although known for its durability, proved to require too much maintenance for Group N (N1 class) racing conditions. REINIK started with strengthened RB26DETT block.
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