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; […]
make: Audi
Audi 8U RS Q3: CTSA/CZGA 2.5 TFSI engine
Introduction Audi’s CTSA and CZGA were 2.5-litre inline five-cylinder turbocharged engines that powered the Audi 8U RS Q3. Hand-built in Gyor, Hungary, the CTSA engine was closely-related to the CEPA engine which powered the Audi 8J TT RS Coupe, but differed in that the CTSA engine had: Relative boost pressure of 1.0 bar (compared to […]
Audi 8X S1: CWZ engine
Introduction Audi’s CWZ engine was a 2.0-litre turbocharged petrol engine that powered the Audi 8X S1 and S1 Sportback. A member of Volkswagen’s EA888 Gen 3 engine family, key features of the CWZ engine included: A grey cast iron block; Forged steel crankshaft; Alusil cylinder head; Double overhead camshafts with four valves per cylinder; Variable […]
Audi C7 RS6 and RS7: CRDB 4.0 TFSI V8 engine
Introduction Audi’s CRDB engine was a 4.0-litre V8 petrol engine with two twin-scroll turbochargers that powered the Audi C6 RS6 and RS7 Sportback. Manufactured in Gyor, Hungary, the CRDB engine was related to the CGTA engine which powered the Audi D4 S8 and the CEUC engine which powered the Audi C7 S6 and S7 Sportback. […]
Audi C6 RS6: BUH 5.0 TFSI V10 engine
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 […]
Audi B8 RS4 and 8T RS5: CFSA 4.2 FSI V8 engine
Introduction Audi’s CFSA was a 4.2-litre V8 petrol engine that was introduced in the Audi 8T RS5 Coupe in 2010 and subsequently powered the Audi B8 RS4. Hand-built at Audi’s plant in Gyor, Hungary, the CFSA engine effectively replaced the BNS engine which powered the Audi B7 RS4. Key features of the CFSA engine included […]
Audi C5 RS6: BCY 4.2 biturbo V8 engine
Introduction Audi’s BCY engine was a 4.2-litre biturbo V8 engine which was introduced in the Audi C5 RS6. Based on the AQJ/ANK engine in the Audi C5 S6, key features of the BCY engine included its: Cast aluminium alloy block with a 90-degree ‘V’ angle; Die-forged steel crankshaft; Aluminium-silicon (‘Alusil’) cylinder head; Double overhead camshafts […]
Audi B5 RS 4: ASJ/AZR 2.7 biturbo V6 engine
Introduction Audi’s ASJ and AZR engines were 2.7-litre biturbo V6 petrol engines that powered the Audi B5 RS4. Key features of the ASJ/AZR 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; Variable […]
Audi B7 RS 4: BNS 4.2 FSI V8 engine
Introduction Audi’s BNS was a 4.2-litre V8 petrol engine that was introduced in the Audi B7 RS4 in 2006. Key features of the BNS included: Two-piece, closed-deck cylinder block; 90-degree ‘V’ angle; Die-forged crankshaft made from 42CrMoS4; Split connecting rods made from 34CrNiMo8; Forged aluminium pistons; Chain-driven double overhead camshafts; Four valves per cylinder actuated […]
Audi 8V RS 3: CZGB 2.5 TFSI engine
Introduction Audi’s CZGB was a 2.5-litre inline five-cylinder turbocharged engine that powered the Audi 8V RS 3 Sportback. Hand-built in Gyor, Hungary, the CZGB engine was developed by Audi’s high-performance subsidiary quattro GmbH and based on the CEPA engine which powered the Audi 8J TT RS Coupe. Key features of the CZGB engine included: Vermicular […]