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| Land Rover Engine >> CYLINDER HEAD SPECIFICATIONS
Cylinder Head Specifications on
Perkins Prima, Prima Marine & 500 Series Engines
AERA members should consider the following specifications when
remanufacturing Perkins Prima, Prima Marine & 500 Series
industrial cylinder heads. These direct injection, high speed 4
cylinder diesel engines have also been distributed by Detroit
Diesel Corporation in various industrial and marine applications
since 1986 as well as British Leyland, Land Rover trucks.
The cylinder head minimum thickness should be no less than 4.718
(119.85mm). According to Detroit it is possible to machine .008
(.20mm) from a new cylinder head casting before approaching
minimum thickness.
The valve recession should be maintained at .035 - .049 (.89 -
1.24mm) for both intake and exhaust valves.
The AERA Technical Committee
June 1990 - TB 666
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