Specifications
| Engine | F4R 720 | F4R 820 |
|---|
| No. of cylinders/configuration | - | 4 in line |
| No. of valves | - | 16 |
| Capacity | cm 3 | 1998 |
| Bore diameter | mm | 82.7 |
| Stroke | mm | 93.0 |
| Power output | kW/rpm | 88/4750 | 86/4700 |
| Torque | Nm/rpm | 190/3750 |
| Compression | - | 9.8:1 |
| Exhaust emission standards | - | Euro 2000 | Euro IV |
| Ribbed V-belt tension | Automatic tensioner |
Engine Speed Dimensions
Cooling System
| Coolant capacity (approximately) | L | 5.4 |
|---|
| Coolant quality | - | GM Long Life coolant |
| Thermostat start of opening | °C | 89 |
| Thermostat full opening | °C | 101 |
| Valve rating, coolant expansion tank (brown) | bar | 1.2 |
Oil Circuit
| Engine oil capacity | | |
|---|
| with oil filter | L | 5.4 |
| without oil filter | L | 5.25 |
| between MIN and MAX | L | 1.5 to 2.0 |
| Engine oil quality | ACEA A3 |
| Engine oil disposal | Observe national legislation |
| Oil pressure (engine at normal operating temperature – 80°C) | | |
| at 1000 rpm | bar | 1.2 |
| at 3000 rpm | bar | 3.5 |
Plane Surface
| Maximum Deformation | mm |
|---|
| Cylinder block | 0.03 |
| Cylinder head | 0.05 |
Pistons
| Piston Dimensions (mm) | F4R 720 | F4R 820 |
|---|
| X1 | 43.8 ± 0.01 | 44 ± 0.01 |
| X2 | 56.8 | 57 |
| X3 | 6 ± 0.1 |
| Piston diameter (category 2 or B) | 82.680 to 82.690 |
| Piston diameter (category 3 or C) | 82.690 to 82.700 |
| Piston chamber volume | cm 3 | 9.64 ± 0.4 |
Piston Markings
| 1. | Offset between gudgeon pin hole centre line (6) and piston axis of symmetry (5) |
|---|
| 2. | Piston category (2-3) or (B-C) |
| 3. | Engine suffix (2.0 for F4R 720) |
| | (770 for F4R 820) |
| 4. | Supplier only |
| 5. | Piston axis of symmetry |
| 6. | Gudgeon pin hole centre line |
| 7. | Supplier only |
| 8. | Direction of piston installation (towards flywheel end of engine) |
| Piston Ring End Gap Dimensions | mm |
|---|
| 1st compression ring | 0.20 to 0.35 |
| 2nd compression ring | 0.40 to 0.60 |
| Oil control ring | 0.25 to 0.75 |
| Piston Ring Thickness | mm |
|---|
| 1st compression ring | 1.175 to 1.190 |
| 2nd compression ring | 1.470 to 1.495 |
| Oil control ring | 1.87 to 2.0 |
| Gudgeon Pin Dimensions | mm |
|---|
| Inner diameter | 12.6 maximum |
| Outer diameter | 20.995 to 21 |
| Length | 60.7 to 61 |
Con-Rods
| Con-rod Dimensions | mm |
|---|
| Centre line distance between big end and small end | 144 ± 0.035 |
| Con-rod bush inner diameter | 23.010 ± 0.010 |
| Con-rod bearing thickness | 1.776 ± 0.003 |
| Con-rod bearing inner diameter (without shells) | 51.596 ± 0.009 |
| Con-rod bearing inner diameter (with shells) | 48.044 ± 0.009 |
| Con-rod side clearance | 0.22 to 0.40 |
| Con-rod diametrical play | 0.020 to 0.070 |
Note. The maximum permitted weight difference between con-rods used on the same engine is 6 gram.
Crankshaft
| Crankshaft Dimensions | mm |
|---|
| Crankshaft lateral play | 0.07 to 0.23 |
| Crankshaft diametrical play | 0.040 to 0.075 |
| Thrust bearings | |
| Original | 2.30 to 2.35 |
| Aftersales | 2.35 to 2.40 , 2.40 to 2.45 , 2.45 to 2.50 |
| Main bearing inner diameter | |
| Blue paint mark | 54.785 to 54.794 |
| Red paint mark | 54.795 to 54.805 |
| Pin diameter | 48 + 0.02 |
| Main bearing thickness | |
| Blue paint mark | 1.944 to 1.950 |
| Red paint mark | 1.939 to 1.945 |
Cylinder Head
| Cylinder Head Dimensions |
|---|
| Height (H) | mm | 138.15 |
| Chamber Volume | cm 3 | 41.4 ± 0.9 |
Note. No regrinding of the cylinder head or cylinder block is permitted.
Piston Category Pairings in Relation to Cylinder Block
| Point (X4) of Holes (T) on Cylinder Block | Category Reference | Barrel Diameter (mm) | Nominal Piston Diameter (mm) |
|---|
| Without hole and (X4) = 13 mm | 2 or B | 82.710 inclusive to 82.720 exclusive | 82.680 inclusive to 82.690 exclusive |
| (X4) = 19 mm | 3 or C | 82.720 inclusive to 82.730 inclusive | 82.690 inclusive to 82.700 inclusive |
Camshaft Identification
The camshafts are identified by horizontal or vertical markings as follows:
| 1. | Engine type |
|---|
| 2. | Intake (A) or exhaust (E) |
| 3. | Used by supplier |
| Number of camshaft bearings | 6 |
Note. Camshaft bearing No. 1 is at the flywheel end.
| Camshaft Dimensions | mm |
|---|
| Camshaft journal diameter | |
| 1 | 25 - 0.03 |
| 2 to 5 | 25 - 0.021 |
| 6 | 28 + 0.061 |
| Camshaft cap inner diameter (integral to cylinder head and cylinder head cover) | |
| 1 to 5 | 25 + 0.061 |
| 6 | 28 + 0.061 |
| Camshaft end float | 0.08 to 0.178 |
| Intake lobe height | 40.616 ± 0.03 |
| Exhaust lobe height | 39.589 ± 0.03 |
Valves and Valve Guides
| Valve Clearances | mm |
|---|
| Intake valve | Not applicable, hydraulic tappets installed |
| Exhaust valve |
| Valve Guide and Lifter Dimensions | mm |
|---|
| Valve guide length | 40.5 ± 0.15 |
| Valve guide external diameter | 11 + 0.068 |
| Valve guide internal diameter | |
| Not machined | 5 + 0.075 |
| Machined (measured with valve guide installed in cylinder head) | 5.5 + 0.018 |
| Valve guide angle | |
| Intake | 63° 30' |
| Exhaust | 66° |
| Valve Guide Positions | mm |
|---|
| Intake (A) | 12 ± 0.15 |
| Exhaust (B) | 11 ± 0.15 |
| Valve Dimensions (mm) | Intake | Exhaust |
|---|
| Stem diameter (A) | 5.471 ± 0.009 | 5.447 ± 0.009 |
| Head diameter (B) | 33.5 ± 0.12 | 29.0 ± 0.12 |
| Length (C) | 110.08 ± 0.15 | 108.87 ± 0.15 |
Valve Face Angle
| Intake valve | 90° |
|---|
| Exhaust valve | 90° |
| Valve Lift | mm |
|---|
| Intake | 9.2 |
| Exhaust | 7.2 |
Valve Seats
| Intake | Exhaust |
|---|
| Valve seat angle | 89° | 89° |
| External diameter, seat (mm) | 34.542 ± 0.008 | 30.042 ± 0.006 |
| Internal diameter, seat insert (mm) | 34.4 + 0.02 | 29.9 + 0.02 |
| Height | 4.65 ± 0.05 |
| Valve seat width | 1.3 + 1.4 | 1.4 + 1.3 |
Valve Spring
| Dimensions | mm |
|---|
| Length under load | |
| 190 Nm | 34.5 |
| 590 Nm | 24.5 |
| Free length | 41.3 |
Spark Plugs
| Spark plug gap | | |
|---|
| Champion RC8PYCB | mm | 0.75 ± 0.05 |
| NGK PFR6G-9 | 0.90 ± 0.05 |
| Engine Weights (Kg) |
|---|
| F4R 720, F4R 820 | 147.5 |
