The RB26 features a Solid iron block with an aluminum alloy head. The valve prepare can be a DOHC with twin-cams and 4 valves for each cylinder for a total of 24 valves around the engine. The RB26 does not have variable valve timing (VVT), which Nissan wouldn’t introduce of their engines till the early-‘90s.In the following paragraphs, I need t