The RB26 has a Solid iron block with the aluminum alloy head. The valve educate is really a DOHC with twin-cams and 4 valves per cylinder for a total of 24 valves within the engine. The RB26 doesn't have variable valve timing (VVT), which Nissan wouldn’t introduce of their engines till the early-‘90s.The primary point to bear in mind on the RB2