Nissan made the N1 block somewhat various as opposed to typical RB26 block, and is also marked that has a 24U as opposed to 05U to differentiate it.The RB engine family members includes solitary overhead camshaft (SOHC) and double overhead camshaft (DOHC) engines.[four] Both equally SOHC and DOHC variations have an aluminium head. The SOHC variatio