The cylinder head seals the top of the combustion chamber and houses the valve train that controls gas exchange, working under the highest thermal and mechanical loads in the engine. This group covers complete heads and bare castings, inlet and exhaust valves, guides and seats, springs, collets and caps, stem seals, rocker arms and shafts, pushrods, tappets and camshafts. Perkins heads across the 1100 and 1200 Series are a frequent overhaul item in generating set service, where sustained running at prime load works valve seats and guides harder than intermittent duty. Cracking between valve seats and seat recession are the usual findings on high-hour heads.
AMS Parts supplies a wide range of cylinder head & valves components for Perkins engines used in power generation, marine, and industrial applications. Browse the full range below, or contact us for specific requirements.
Browse our range of Cylinder Head & Valves parts below. Use the search bar above to find a specific part number, or request a quote.
Sustained high-load running, particularly on gas or low-lubricity fuels, gradually beds the valve deeper into its seat. It shows as loss of valve clearance and eventually compression loss.
A head can usually be machined if distortion is within limits and the casting is crack-free. Removing material affects compression ratio and valve protrusion, so check the minimum thickness.
At the interval in the Perkins service schedule for the engine and duty cycle, and after any work disturbing the valve train.
