| International Engine >> CYLINDER HEAD SPECIFICATIONS |
Cylinder Head Specifications For
Detroit Diesel Corporation 60 Series Engines
AERA member machine shops should consider the following specifications when remanufacturing DDC 60 Series cylinder heads.
The cylinder head deck face should be flat within .005 (.120mm) front-to-rear and .003 (.076mm) side-to-side. Resurfacing of the cylinder head is recommended if these specifications are not met. DDC has set the cylinder head height at 6.5019-6.4719 (165.15-164.388mm) when measured from the deck surface the top rail (Figure 1). This permits a maximum stock removal of .030
(.762mm) off the cylinder head. Due to the overhead camshaft design of this engine, the combined stock removal from the cylinder head and cylinder block may not exceed .030 (.762mm). DDC recommends a deck surface finish of 90 Ra for proper sealing.
When the cylinder head has been resurfaced the injector tube bore land width needs to be checked (Figure 2). If necessary, countersink the injector bores to restore a land width of .040-.080 x 45o (1.0-2.0mm x 45o). Always install new injector tubes when a cylinder head has been resurfaced.
Valve recession has been established at .055-.067 (1.4-1.7mm) when measured relative to the cylinder head deck surface (Figure 3).
Install the cylinder head and torque the head bolts using the sequence shown in Figure 4. Lubricate the bolt threads with oil and the bolt contact areas with International Compound No. 2 or equivalent. Tighten the head bolts in sequence to 185-210 lbs.ft. (250-285 Nm). Recheck each bolt to ensure that the
proper torque has been achieved.
For additional information see AERA Bulletin: TB 684
The AERA Technical Committee
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