Introduction Audi’s CGTA engine was a 4.0-litre V8 petrol engine with two twin-scroll turbochargers that was introduced in the Audi D4 S8. Marketed as Audi’s ‘4.0 TFSI’ engine, key features of the CGTA engine included its: Hypereutectic aluminium-silicon alloy block with 90-degree ‘V’ angle; Forged steel crankshaft; Aluminium alloy cylinder head with ‘hot side in’ […]
Category: Engines
Audi D2 S8: AHC/AKH 40 valve V8 engine
Introduction Audi’s AHC and AKH were 4.2-litre V8 petrol engines that powered the Audi D2 S8 from 1996 to 1999. Key features of the AHC/AKH engine included its: Cast aluminium alloy block with 90-degree ‘V’ angle; Die-forged steel crankshaft with five main bearings; Cast aluminium alloy cylinder head; Double overhead camshafts driven by a toothed […]
Audi D2 S8: AQH/AVP/AYS/BCS 40 valve V8 engine
Introduction Audi’s AQH, AVP, AYS and BCS were 4.2-litre, 40 valve V8 engines that powered the Audi D2 S8 from 1999 to 2003. Effectively replacing the 4.2-litre 32 valve AHC/AKH engines, key features of the 40 valve AQH/AVP/AYS/BCS engines included: A cast aluminium alloy block with 90-degree ‘V’ angle; Die-forged steel crankshaft with five main […]
Audi C7 S6 and S7: CEUC 4.0 TFSI engine
Introduction Audi’s CEUC engine was a 4.0-litre V8 petrol engine with two twin-scroll turbochargers that powered the Audi C7 S6 and C7 S7 Sportback. Marketed as Audi’s ‘4.0 TFSI’ engine, key features of the CEUC engine included its: Hypereutectic aluminium-silicon alloy block with 90-degree ‘V’ angle; Forged steel crankshaft; Aluminium alloy cylinder head with ‘hot […]
Audi C6 S6: BXA 5.2 FSI V10 engine
Introduction Audi’s BXA engine was a 5.2-litre V10 petrol engine that powered the Audi C6 S6 from 2006 to 2011. The BXA engine was developed from Audi’s 4.2 V8 FSI engine, but had a new crankshaft, balance shaft, double-chambered intake manifold with dual throttle valves and exhaust manifold. Although the BXA engine was similar in […]
Audi 8T S5 Coupe: CAUA 4.2 FSI engine
Introduction Audi’s CAUA engine was a 4.2-litre V8 petrol engine with direct injection that powered the Audi 8T S5 Coupe from 2007 to 2011. Key features of the CAUA engine included its: Closed-deck, aluminium silicon-alloy block with reinforcing bedplate; 90-degree ‘V’ angle; Cast aluminium alloy cylinder head; Double overhead camshafts (chain-driven) with inlet and exhaust […]
Audi C5 S6: AQJ/ANK V8 engine
Introduction Audi’s AQJ and ANK were 4.2-litre V8 petrol engines that powered the Audi C5 S6. Key features of the AQJ/ANK engines included: A cast aluminium alloy block with 90-degree ‘V’ angle; Die-forged steel crankshaft with five main bearings; Cast aluminium alloy cylinder head; Double overhead camshafts driven by a toothed belt and simplex chain; […]
Audi B8 S4 & 8T S5: CAKA/CCBA/CGWC engine
Introduction Audi’s CAKA and CCBA engines were 3.0-litre supercharged V6 petrol engines that were first introduced in Audi B8 S4 and S4 Avant in 2009 and subsequently offered in the 8T S5 Cabriolet, 8T S5 Sportback and 8T S5 Coupe. The CAKA/CCBA engines effectively replaced the 4.2-litre BBK V8 engine which was used in the […]
Audi B6/B7 S4: BBK V8 engine
Introduction Audi’s BBK was a 4.2-litre, 40 valve V8 petrol engine that was first introduced in the Audi B6 S4. Key features of the BBK engine included its: Cast aluminium alloy block with 90-degree ‘V’ angle; Die-forged steel crankshaft with five main bearings; Cast aluminium alloy cylinder head; Chain-driven double overhead camshafts; Five valves per […]
Audi B5 S4: AZB/AGB biturbo V6 engine
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; […]