Oil leaks and broken cylinder head bolts may occur if the head bolts
are not properly tightened. The newest level of cylinder head gasket
and cylinder head bolts are recommended any time cylinder head service
is performed. The new cylinder head gasket and bolts require a
different service procedure for all 1992 and earlier 2.3L engines.
The new head gasket and bolts are uniquely different from the
production designed parts. Because of the difference, the new cylinder
head bolts are the only bolts that can be used with the new head
gasket. If a previous head gasket is to be used, or if head bolts are
not available for the new gasket, the previous head gasket and bolts
must be used.
Failure to properly torque the cylinder head gasket an
lead to an improper sealing surface, which can result in a leaking
condition and broken head bolts.
• With the cylinder block and head properly prepared, install the new
head gasket. The camshaft must be properly positioned to ensure proper
• Install all 10 head bolts into the block, finger tight.
• Use the new “Torque Plus Angle” procedure as follows only for new head gasket and bolts.
• Tighten all 10 cylinder head bolts in sequence shown in service manual to 51 ft.lbs (70 Nm)
• Retighten all 10 head bolts in sequence to 51 ft.lbs. (70 Nm).
• Tighten all 10 head bolts in sequence and additional 90°-100°
Some or all of this information was provided by the Automotive
Parts Remanufacturers Association (APRA). For more information on
technical bulletins available through APRA call 703-968-2772 or visit www.AutoBulletins.com.