Introduction Audi’s AZB and AGB engines were 2.7-litre biturbo V6 petrol engines that powered the Audi B5 S4 Avant. Key features of the AZB/AGB engine included its: Cast iron block with 90-degree ‘V’ angle; Die-forged steel crankshaft; Forged pistons; Cast aluminium alloy cylinder head; Double overhead camshafts; Five valves per cylinder actuated by hydraulic tappets; […]
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