The RB26 incorporates a Forged iron block with an aluminum alloy head. The valve prepare is really a DOHC with twin-cams and 4 valves for every cylinder for a total of 24 valves to the engine. The RB26 does not have variable valve timing (VVT), which Nissan wouldn’t introduce of their engines till the early-‘90s.Following R32 areas help from NI