The RB26 incorporates a Solid iron block having an aluminum alloy head. The valve train is actually a DOHC with twin-cams and 4 valves per cylinder for a complete of 24 valves to the engine. The RB26 doesn't have variable valve timing (VVT), which Nissan wouldn’t introduce of their engines until the early-‘90s.The RB26DETT engine is known for i