Four-cylinder engine specifications (Taurus 1 and 2)

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General information


Cylinder compression pressure6 atm (101 psi) minimum
Oil pressure (hot at 2000 rpm)3.47-4.76 atm (55-70 psi)

Cylinder head and valves


Maximum permissible skew0.076 mm (0.003 in) on any. 152 mm (6 in). 0.152 mm (0.006 in) overall.
Minimum width of the working edge of the valve0.79 mm (1/32 inch)
Inlet valve
Saddle angle45 degrees
Rod diameter
standard8.674-8.692 mm (0.3415-0.3422 in)
0.015 over size9.058-9.073 mm (0.3566-0.3572 in)
0.030 over size9.058-9.073 mm (0.3716-0.3722 in)
Clearance between valve stem and guides
recommended0.457 mm (0.018 in)
operating limits0.25-0.686 (0.01-0.027 in)
Exhaust valve
Saddle angle45 degrees
Rod diameter
standard8.664-8.682 mm (0.3411-0.3418 in)
0.015 oversize9.045-9.063 mm (0.3561-0.3568 in)
0.030 oversize9.426-9.444 mm (0.3711-0.3718 in)
Clearance between valve stem and guides
recommended0.584 mm (0.023 in)
operating limits0.38-0.81 mm (0.015-0.032 in)
Valve spring pressure
with the valve closed311.4-346.9 N (70-78 lbf) at 38.1 mm (1.5 in)
with the valve open780.6-847.3 N (174.5-190.5 lbf) at 27.94 mm (11 in)
Free length of valve spring (approximate)44.7 mm (1.76 in)
Height of installed valve spring37.85 mm (1.49 in)
Valve lifter
diameter (standard)22.2-22.21 mm (0.8740-0.8744 in)
tappet - hole clearance0.018-0.069 mm (0.0007-0.0027 in)

Crankshaft and connecting rods


Crankshaft connecting rod journal diameter53.93-53.95 mm (2.1232-2.1240 in)
Bearing oil clearance
desirable0.02-0.038 mm (0.0008-0.0015 in)
acceptable0.02-0.061 mm (0.0008-0.0061 in)
Connecting rod side clearance (play)
standard0.889-2.667 mm (0.0035-0.0105 in)
operating limits0.356 mm (0.014 in)
Crankshaft main journal diameter57.122-57.125 mm (2.2489-2.2490 in)
Bearing oil clearance
desirable0.02-0.038 mm (0.0008-0.0015 in)
acceptable0.02-0.061 mm (0.0008-0.0015 in)
Play in the end of the crankshaft
standard0.102-0.203 mm (0.004-0.008 in)
operating limits0.305 mm (0.012 in)



Pistons and rings


Piston diameter
marked in red93.429-93.444 mm (3.6783-3.6789 in)
marked in blue93.459-93.475 mm (3.6795-3.6801 in)
marked in yellow93.49-93.5 mm (3.6807-3.6811 in)
Maximum clearance between piston and cylinder (selective assembly)0.091-0.142 mm (0.0036-0.0056)
Piston ring gap
Compression rings0.203-0.406 mm (0.008-0.016 in)
Oil scraper rings (steel abrasion edges)0.381-1.397 mm (0.015-0.055 in)

Camshaft


Cam lift
intake6.325 mm (0.249 in)
graduation6.071 mm (0.239 in)
Permissible reduction in lift0.127 mm (0.005 in)
Play in the end0.229 mm (0.009 in)
Camshaft drive chain slack12.7 mm (0.5 in)
Theoretical valve lift at zero clearance
intake9.957 mm (0.392 in)
graduation9.576 mm (0.377 in)
Inner diameter of bearings (all)51.054-51.029 mm (2.01-2.009 in)
Bearing oil clearance
standard0.025-0.076 mm (0.001-0.003 in)
operating limits0.152 mm (0.006 in)

Tightening torque specification


Nm(foot pounds)
Through bolts for fastening the camshaft to the bar8.1-12.2(6-9)
Camshaft tensioner bolts8.1-12.2(6-9)
Camshaft Sprocket Bolt55.6-75.9(41-56)
Connecting rod cap nuts28.5-35.3(21-26)
Crankshaft pulley bolt189.8-230.5(140-170)
Crankshaft rear oil seal retainer mounting bolts8.1-12.2(6-9)
Flywheel bolts of the drive bar73.2-86.8(54-64)
Main Bearing Cap Bolts69.2-89.5(51-66)
Camshaft Drive Target Cover Bolts8.1-12.2(6-9)


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