Jaguar: XK150 (1957-61) • Mark II (1959-69) • E-Type Series 1 and 2 (1961-70) • S-Type 3.4 and 3.8 (1963-68) • Mk10 and 420G (1961-70) • 420 and Daimler Sovereign (1966-69) • XJ6 2.8 Series I and II (1968-73), 4.2 Series I and II Carburettor models to engine no. 8L64995 and Fuel Injection models to engine no. 8L50475 (1968-78) plus all 3.4 Series II and III (1975-87)
44.5 mm
Advanced top-engine technology
Valves are subjected to some of the highest stresses and temperatures in the engine, yet not only must they survive, they must also continue to seal perfectly. As a top-engine expert with a long heritage of innovation, AE provides the answer with high-precision designs. The choice of material is so critical that some AE valves, known as ‘bi-metallic valves’, are made from two materials, with the head optimised for strength and temperature resistance and the stem optimised to resist wear.
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