Specifications of the four-cylinder engine (Engine / Overhaul / Ford Taurus 1 and 2 1986-1994)

General information

Cylinder compression pressure	6 atm (101 psi) minimum
Oil pressure (hot at 2000 rpm.)	3.47-4.76 atm (55-70 psi)

Maximum allowable skew	0.076 mm (0.003 inch) on any. 152 mm (6 inches). 0.152 mm (0.006 inch) general.
Minimum valve edge width	0.79 mm (1/32 inch)
Inlet valve
Saddle angle	45 degrees
Rod diameter
standard	8.674-8.692 mm (0.3415-0.3422 inch)
0.015 oversize	9.058-9073 mm (0.3566-0.3572 inches)
0.030 oversize	9.058-9.073 mm (0.3716-0.3722 inches)
Clearance between valve stem and guides
recommended	0.457 mm (0.018 inch)
operating limits	0.25-0.686 (0.01-0.027 inch)
Exhaust valve
Saddle angle	45 degrees
Rod diameter
standard	8.664-8.682 mm (0.3411-0.3418 inch)
0.015 oversize	9.045-9.063 mm (0.3561-0.3568 inch)
0.030 oversize	9.426-9.444 mm (0.3711-0.3718 inch)
Clearance between valve stem and guides
recommended	0.584 mm (0.023 inch)
operating limits	0.38-0.81mm (0.015-0.032 inch)
Valve spring pressure
with closed valve	311.4-346.9 H (70-78 lbf) at 38.1 mm (1.5 inches)
with open valve	780.6-847.3 N (174.5-190.5 lbf) at 27.94 mm (11 inches)
Valve spring free length (exemplary)	44.7 mm (1.76 inches)
Valve spring installed height	37.85 mm (1.49 inches)
valve tappet
diameter (standard)	22.2-22.21mm (0.8740-0.8744 inches)
gap pusher - hole	0.018-0.069mm (0.0007-0.0027 inch)

Crankshaft journal diameter	53.93-53.95 mm (2.1232-2.1240 inches)
Bearing oil clearance
desirable	0.02-0.038mm (0.0008-0.0015 inch)
admissible	0.02-0.061mm (0.0008-0.0061 inch)
Side clearance (backlash) connecting rod
standard	0.889-2.667 mm (0.0035-0.0105 inch)
operating limits	0.356 mm (0.014 inch)
Crankshaft journal diameter	57.122-57.125 mm (2.2489-2.2490 inches)
Bearing oil clearance
desirable	0.02-0.038mm (0.0008-0.0015 inch)
admissible	0.02-0.061mm (0.0008-0.0015 inch)
Play at the end of the crankshaft
standard	0.102-0.203mm (0.004-0.008 inch)
operating limits	0.305 mm (0.012 inch)

Piston diameter
labeled in red	93.429-93.444 mm (3.6783-3.6789 inches)
labeled in blue	93.459-93.475 mm (3.6795-3.6801 inches)
labeled in yellow	93.49-93.5 mm (3.6807-3.6811 inches)
Limit clearance between piston and cylinder (selective assembly)	0.091-0.142mm (0.0036-0.0056)
Piston ring gap
Compression rings	0.203-0.406mm (0.008-0.016 inch)
Oil scraper rings (steel erasing edges	0.381-1.397 mm (0.015-0.055 inch)

Cam lift
inlet	6.325 mm (0.249 inch)
graduation	6.071 mm (0.239 inch)
Permissible lift reduction	0.127 mm (0.005 inch)
End play	0.229 mm (0.009 inch)
Camshaft timing chain slack	12.7mm (0.5 inch)
Theoretical valve lift at zero clearance
inlet	9.957 mm (0.392 inch)
graduation	9.576 mm (0.377 inch)
Bearing inner diameter (all)	51.054-51.029 mm (2.01-2.009 inches)
Bearing oil clearance
standard	0.025-0.076mm (0.001-0.003 inch)
operating limits	0.152 mm (0.006 inch)

	N·m	(foot pounds)
Bolts through fastening the camshaft to the bar	8.1-12.2	(6-9)
Camshaft tensioner bolts	8.1-12.2	(6-9)
Camshaft sprocket bolt	55.6-75.9	(41-56)
Connecting rod cap nuts	28.5-35.3	(21-26)
crankshaft pulley bolt	189.8-230.5	(140-170)
Bolts of fastening of a clamp of a back epiploon of the crankshaft	8.1-12.2	(6-9)
Drive rail flywheel bolts	73.2-86.8	(54-64)
Main bearing cap bolts	69.2-89.5	(51-66)
Camshaft Target Cover Bolts	8.1-12.2	(6-9)