Cylinder block
Cylinder bore diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84.456 to 84.469 mm
Maximum cylinder bore taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15 mm
Maximum cylinder bore ovality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15
Maximum gasket face distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 mm
Crankshaft and bearings
Main bearing journal diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54.005 to 54.026 mm
Main bearing journal-to-shell running clearance . . . . . . . . . . . . . . . . . . 0.03 to 0.070 mm
Crankpin (big-end) bearing journal diameter . . . . . . . . . . . . . . . . . . . . . 47.648 to 47.661 mm
Crankpin (big-end) bearing journal-to-shell running clearance . . . . . . . 0.04 to 0.08 mm
Crankshaft endfloat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.03 to 0.20 mm
Note: Refer to Part A of this Chapter for torque wrench settings.
V6 engines
Cylinder head
Valve seat angle (inlet and exhaust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45º
Valve seat width (inlet and exhaust) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.0 mm maximum
Valves Inlet Exhaust
Valve stem diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.58 to 6.59 mm 6.55 to 6.58 mm
Valve stem-to-guide clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.16 mm maximum 0.22 mm maximum
Cylinder block
Cylinder bore diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87.00 to 87.02 mm
Maximum cylinder bore taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05 mm
Maximum cylinder bore ovality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05 mm
Maximum gasket face distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 mm
Pistons and piston rings
Piston-to-cylinder bore clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.08 mm
Piston ring end gap:
Top compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.35 mm maximum
2nd compression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.50 mm maximum
Oil control ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.70 mm maximum
Piston ring-to-groove clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No information available
Crankshaft and bearings
Main bearing journal-to-shell running clearance . . . . . . . . . . . . . . . . . . 0.24 to 0.048 mm
Main bearing journal taper and ovality . . . . . . . . . . . . . . . . . . . . . . . . . . 0.010 mm maximum
Crankpin (big-end) bearing journal-to-shell running clearance . . . . . . . 0.026 to 0.050 mm
Crankpin (big-end) bearing journal taper and ovality . . . . . . . . . . . . . . . 0.010 mm maximum
Crankshaft endfloat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.10 to 0.30 mm
Note: Refer to Part B of this Chapter for torque wrench settings.
2C•2 Engine removal and general engine overhaul procedures
1380 Rover 800 Series Remake
1 General information
How to use this Chapter
This Part of Chapter 2 is devoted to
engine/transmission removal and refitting, to
those repair procedures requiring the removal
of the engine/transmission from the vehicle,
and to the overhaul of engine components. It
includes only the Specifications relevant to
those procedures. Refer to Parts A and B for
additional Specifications, if required.
General information
The information ranges from advice
concerning preparation for an overhaul and
the purchase of replacement parts, to detailed
step-by-step procedures covering removal
and installation of internal engine components
and the inspection of parts.
The following Sections have been written
based on the assumption that the engine has
been removed from the vehicle. For
information concerning in-vehicle engine
repair, as well as removal and installation of
the external components necessary for the
overhaul, see Parts A and B of this Chapter
and Section 6 of this Part.
When overhauling the engine, it is essential
to establish first exactly what replacement
parts are available. On some of the engines
covered in this Chapter, components such as
the piston rings are not available separately
from the piston/connecting rod assemblies;
pistons, gudgeon pins and valve guides may
also not be available separately as may some
under- or oversized components. In some
cases, depending on the extent of engine
wear, it would appear that the easiest and
most economically-sensible course of action
is to replace a worn or damaged engine with
an exchange unit.
2 Engine overhaul -
general information
It’s not always easy to determine when, or
if, an engine should be completely
overhauled, as a number of factors must be
considered.
High mileage is not necessarily an
indication that an overhaul is needed, while
low mileage doesn’t preclude the need for an
overhaul. Frequency of servicing is probably
the most important consideration. An engine
that’s had regular and frequent oil and filter
changes, as well as other required
maintenance, will most likely give many
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