| Hummer Engine >> CYLINDER HEAD SPECS |
Cylinder Head Specifications on
Case 2870 Diesel Engines
The following cylinder head specifications should be considered when remanufacturing Case Model 2870, 674 CID diesel engine cylinder heads.
The minimum cylinder head thickness has been established at 4.898 (124.41mm). The cylinder head features a groove for fire ring retention that may need to be recut if the head has been surfaced. The groove should be .037 - .041 (.94 - 1.04mm) wide and .006 - .010 (.15 -.25mm) deep. The fillet of the groove should have a 10° chamfer.
Valve recession should be checked and adjusted if necessary to a maximum recession of .069 (1.75mm), below the deck surface, for both intake and exhaust valves.
The AERA Technical Committee
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