Introduction Audi’s BUH was a 5.0-litre biturbo V10 petrol engine that powered the Audi C6 RS6. Effectively replacing the 4.2-litre biturbo BCY engine, key features of the BUH engine included its: Aluminium-silicon alloy (AlSi17Cu4Mg) block with a 90 degree ‘V’ angle; Aluminium alloy cylinder head; Chain-driven double overhead camshafts with an adjustment range of 42 […]
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