Cylinder Head - Correct Torque Specification
Group1
Number
9406
Model
6 Cyl.
Part Identifier
1570
March 24, 1994
Subject:
Cylinder Head Torque
ATTENTION: Service Manager / Service Technician
Models Affected:
911 Carrera 1995 model year
911 Carrera 2/4 1989 to 1994 model year
911 Turbo 3.6 Liter 1994 model year
Information:
The following cylinder head torque specification must be used when engine repairs are performed on the above mentioned vehicles:
1st Stage: 20 N-m
2nd Stage: 1 x 90° +/- 2°
Further changes in the area of the cylinder heads are:
Metal head gasket, Part Number 964 104 115 20 for the 911 Carrera 2/4 (formerly graphite). Series introduction was August 24, 1993.
The next spare part microfiche and repair manual supplements will reflect these changes.
Torque angle meter for measurement of tightening torque and turning angle. Tool Number PNA 721 023, Order Number PNA 721 023