300Tdi Discovery
Mpi
1
DESCRIPTION AND OPERATION
DESCRIPTION
The ’T’ Series engine is a four cylinder, water cooled
unit comprising a cast iron cylinder block, aluminium
alloy cylinder head and twin aluminium alloy camshaft
carriers.
The cylinder block incorporates direct bored,
siamesed cylinder bores which provide good structural
rigidity. The crankshaft is carried in five main
bearings, end-float being controlled by thrust washers
positioned each side of the centre main bearing.
The main bearing caps are located to the cylinder
block by dowels; the bearing shells fitted to Nos. 1, 3
and 5 bearings are fully grooved whilst those fitted to
Nos. 2 and 4 bearings are plain.
The cylinder head carries twin camshafts operating
four valves per cylinder via hydraulic tappets. Both
camshafts are driven by the timing belt and run
directly in journals line bored in the cylinder head and
camshaft carriers. The plastic camshaft covers are
bolted to the camshaft carriers.
