SPECIFICATIONS
Page 305
Engine Component Torque
Specifications (Standard Fasteners)
All components are to be clean and free from
foreign material or corrosion. Assemblies are to
be made using suitable tools and procedures so
that no permanent damage occurs as a result of
the assembly.
Threads, washers, under head of screw and
washer face of nuts should be lubricated with
clean engine oil unless otherwise specified.
The following listed fasteners require the use of a
calibrated manual torque
wrench. If an adapter is
required in combination with a torque wrench, a
correction factor must be applied to the torque
wrench readings in order to obtain accurate
fastener torque values.
Fasteners noted by an asterisk (*) require
retorque after engine run-in.
VALVE SEAT ANGLE
Inlet/Exhaust: Valves 29.5°
Inlet/Exhaust: Seats 30°
VALVE SPRINGS
Outer Spring:
Free Length (approximate) 73–74 mm 2.87–2.91 in.
Length under 590 N (133 lb.) load 58 mm 2.28 in.
Length under 1150 N (259 lb.) load 45 mm 1.77 in.
Length when solid 40 mm 1.57 in.
Inner Spring:
Free Length (approximate) 70–71 mm 2.75–2.80 in.
Length under 243 N (55 lb.) load 54 mm 2.12 in.
Length under 447 N (100 lb.) load 41 mm 1.61 in.
Length when solid 37 mm 1.46 in.
Tolerances Are Shown Low to High Standard Size or Fit
Component Metric English
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