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Home >> Ford >> 2002 >> F 150 2WD Pickup V8-5.4L CNG VIN M >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Head Assembly >> Valve Spring
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Valve Spring

Valve spring compression pressure Intake (N @ spec. length) 720-800 N @ 1.10 inch
Exhaust (N @ spec. length) 720-800 N @ 1.10 inch
Valve spring free length Intake 2.10 inch
Exhaust 2.10 inch
Valve spring installed pressure N @ spec. length Intake 287.19-321.19 N @ 1.68 inch
Exhaust 287.19-321.19 N @ 1.68 inch
Valve springs installed pressure N @ spec. length service limit Intake 5% pressure loss @ 1.13 inch
Exhaust 5% pressure loss @ 1.13 inch
Valve springs - out of square limit Intake 2.0°
Exhaust 2.0°
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