ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

321-05 2,9 V6 24V Cosworth Engine|Description and Operation > < Timing Chain ‐ Renew (21 314 0)
General SpecificationsScorpio 1995 (10/1994-06/1998)
Print Print
Specifications
Engine Data
GeneralV6 24V Cosworth
Engine managementEEC V module
Emission standard96 EEC
FuelSuper 95 RON unleaded
Engine codeBOB
Firing order1‐4‐2‐5‐3‐6
Boremm93,0
Strokemm72,0
Cubic capacitycm32935
Compression ratio9,7:1
Compression pressurebar14
Power output (EEC)kW151,4
at rev/min6000
Power output (DIN)kW154,5
(PS)210
at rev/min6000
Torque (EEC)Nm281
at rev/min4250
Torque (DIN)Nm286,6
at rev/min4250
Idle speedrev/minN=730, D=650
Max. engine speedrev/min6150, 6250
Dimensions
Cylinder block
Number of main bearings4
Cylinder bore Ø, class 1mm93,01 ‐ 93,02
Cylinder bore Ø, class 2mm93,02 ‐ 93,03
Cylinder bore Ø, class 3mm93,03 ‐ 93,05
Main bearing shells, inside diametermm60,620 ‐ 60,640
Dimensions
Crankshaft
Main bearing journal Ø, class 1mm56,980 ‐ 57,000
Main bearing journal end floatmm0,08 ‐ 0,32
Dimensions
Connecting rod
Bore diameter, big endmm56,820 ‐ 56,840
Bore diameter, small endmm23,958 ‐ 23,976
Connecting rod, distance between boresmm130,515 ‐ 130,585
Big‐end bearing clearance (radial)
Dimensions
Pistons
Piston Ø, class 2mm92,985 ‐ 92,995
Piston Ø, class 3mm92,995 ‐ 93,005
Piston ring groove, upper compression ringmm0,41 ‐ 0,48
Piston ring groove, lower compression ringmm1,73 ‐ 1,79
Piston ring gap (fitted)
Upper compression ringmm0,4 ‐ 0,65
Lower compression ringmm0,9 ‐ 1,1
Oil control ringmm0,3 ‐ 0,6
Top ring max. clearancemm0,20
Compression ring max. clearancemm0,10
Piston ring clearance: excessive piston ring clearance is identifiable by high oil consumption and sometimes also by blue exhaust smoke.
Piston Pins
Piston pin diametermm24,013 ‐ 24,019
Ring gap position: the piston ring gaps must be spread evenly around the circumference of the piston. This also applies to the elements of the oil control ring. Stagger the ring gaps at intervals of 120°.
Dimensions
Camshafts
Number of camshafts4
Number of camshaft bearings4/4
Drive2 timing chains
Camshaft bearing, inside diametermm34,5 ‐ 34,52
Camshaft bearing, inside diametermm28,0 ‐ 28,21
Max cam lift, inletmm9,5
Max cam lift, exhaustmm9,5
Bearing journal diametermm34,439 ‐ 34,460
Bearing journal diametermm27,939 ‐ 27,960
Valve timing, inlet opens BTDC
Valve timing, inlet closes ABDC62°
Valve timing, exhaust opens BBDC56°
Valve timing, exhaust closes ATDC14°
Valve timings, overlap22°
Dimensions
Valves
Valve tappet diametermm34,9659 ‐ 34,975
Valve head Ø, inletmm34
Valve head Ø, exhaustmm30
Valve length, inletmm105,59
Valve length, exhaustmm104,15
Valve stem Ø, inletmm6,90 ‐ 6,94
Valve stem Ø, exhaustmm6,90 ‐ 6,94
Valve spring length, fittedmm32,0
Valve spring length, not fittedmm40,4
Dimensions
Cylinder Heads
Valve tappet bore diametermm35,000 ‐ 35,015
Valve guide bore diametermm7,0 ‐ 7,015
Valve seat angle45°0" ‐ 45°15"
Cylinder head mating face, maximum distortion diagonally or along lengthmm0,06
Cylinder head mating face, maximum distortion across widthmm0,02
Rework to a maximum depth ofmm0,13
Thickness of cylinder head gasketmm1,2
Lubricants, Adhesives and Sealers
Ford Specification
CoolantESD‐M97B49‐A
No. 4 rear crankshaft main bearing cover onlyESK‐M4G269
Lubricant for spark plug threads (Never Seeze)ESE‐M1244‐A
Timing chain housing on cylinder block and on cylinder head (M8x60 only) ESK‐M4G269
Timing chain tensioner housing on cylinder head WSK‐M2G 349‐A7
Right‐hand timing chain guide on cylinder block WSK‐M2G 349‐A7
Intermediate shaft bearing plate WSK‐M2G 349‐A7
Sump on cylinder block, rubber gasket endsESK‐M4G269
Locking compoundESK‐M4G247‐A
Capacity
Litres
Engine oil incl. filter4,5
Engine oil excl. filter4,2
Coolant9,5
Engine oil
Ambient temperatureDesignationSpecification
‐10 to above 40 degrees CFord Multigrade Super Motor OilSAE 20W50 API/SG/CD
‐15 to above 40 degrees CFord Multigrade Super Motor OilSAE 15W40 API/SH/CD
‐20 to above 40 degrees CFord Multigrade Super Motor OilSAE 10W30 API/SH/CD EC
‐20 to above 40 degrees CXR+ high‐performance high‐lubricity oilSAE 10W40 API/SH/CD EC
‐30 to above 40 degrees CFord Formula S synthetic engine oilSAE 5W50 API/SG/CD
‐30 to above 40 degrees CSemi‐synthetic/synthetic engine oilSAE 5W40 API/SH/CD EC
40 to below ‐30 degrees CFord Multigrade Super Motor OilSAE 5W30 API/SG/CD
Specification SAE 5W30 API/SG/CD engine oil is only approved for northern European countries.
If other makes of engine oil are used, make sure these are of the required API SG/CD viscosity class or better.
Torques
GeneralNmlbf.ft
Wheel nuts8563
Torques
Intake systemNmlbf.ft
Inlet manifold cover43
Bracket for speed control cable97
Inlet manifold to cylinder head1612
Torques
ExhaustNmlbf.ft
Catalytic converters to bracket (between the catalytic converters)2317
Catalytic converter bracket to transmission crossmember4735
Catalytic converter bracket to transmission2317
Catalyst to exhaust manifold4735
EGR valve, pipe to intake air plenum chamber97
EGR valve, pipe to inlet manifold97
EGR valve, bracket to cylinder head1914
Heat shields to exhaust manifold97
Torques
AlternatorNmlbf.ft
Bracket for alternator/power steering pump to cylinder block4432
Alternator to bracket2518
Tensioning pulley for alternator/power steering pump4432
Torques
DriveshaftNmlbf.ft
Driveshaft to differential6649
Driveshaft centre to floor assembly2115
Torques
TransmissionNmlbf.ft
Ground lead to transmission4432
Transmission crossmember to floor assembly3627
Torques
Air conditioning systemNmlbf.ft
Tensioning pulley for air conditioning compressor4130
A/C compressor to bracket2518
A/C compressor to cylinder block4432
Torques
Coolant circuitNmlbf.ft
Coolant pump to timing chain housing129
Bracket for the coolant pipe to the oil cooler97
Coolant pump pulley1914
Thermostat housing bracket97
Thermostat housing connector97
Coolant pipe bracket to cylinder head1914
Coolant pipe clamp to cylinder head97
Torques
SteeringNmlbf.ft
Power steering pump to bracket2518
Power steering pump pulley2518
Intermediate shaft to steering shaft1813
Torques
Engine mountingNmlbf.ft
Engine mounting nuts5037
Torques
Front axleNmlbf.ft
Transverse brace to front axle8059
Front axle to side member8059
Suspension arm to spindle carrier8361
Link rod to stabiliser bar4735
Track rod to spindle carrier6346
Torques
Oil circuitNmlbf.ft
Sump M6x20129
Sump M6x45129
Sump M6x115129
Oil pump2015
Oil drain plug2418
Oil baffle plate2115
Oil filter to oil cooler (after contact)270°270°
Oil cooler to oil pick‐up pipe3324
Oil filter connector3526
Torques
Cylinder blockNmlbf.ft
Main bearing caps9772
Big‐end bearing cap, (big‐end bearings and connecting rod bolts 6AA or KX 110)3022
Big‐end bearing cap, (big‐end bearings and connecting rod bolts 5AB or KX 900), stage 12015
Big‐end bearing caps, stage 290°90°
Camshaft bearing caps107
Right‐hand timing chain guide129
Timing chain housing to cylinder block M81914
Crankshaft pulley/vibration damper, stage 14533
Crankshaft pulley/vibration damper, stage 290°90°
Crankcase breather connector to sump97
Clamping sleeve bolt (crankcase breather)97
Oil pressure switch2015
Intermediate shaft bearing plate129
Intermediate shaft sprocket5037
Clamping piece for oil pump drive assembly bearing bracket1914
CKP sensor bracket to cylinder block97
CKP sensor to bracket97
CKP sensor wiring clamp129
Drive plate to crankshaft6850
Torques
Cylinder HeadNmlbf.ft
CMP sensor to cylinder head97
Camshaft sprockets7253
Upper chain guides1914
Left‐hand timing chain guide97
Timing chain tensioner housing97
Timing chain tensioner threaded plug1310
Right‐hand chain guide retaining bolt97
Cylinder head bolts, stage 15037
Cylinder head bolts, stage 2 (or 2 x 90°)180°180°
Cylinder head bolt in timing chain housing1914
Cylinder head covers75
Fuel rails97
Fuel pipe bracket97
Spark plugs2015
Cylinder head heat shield97
Engine lifting eyes to cylinder head1914
Ignition coil bracket M697
Ignition coil bracket M81914
Oil dipstick tube to cylinder head97

321-05 2,9 V6 24V Cosworth Engine|Description and Operation > < Timing Chain ‐ Renew (21 314 0)