2008 MERCEDES-BENZ S-Class compression ratio

751 Technical data
Engine
Engine
Model
S 450 4MATIC (221.184)
1,2
1The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equip-
ment.2Canada only
S 550 (221.171)
1
Engine
273
273
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
8
8
Bore
3.66 in (92.90 mm)
3.86 in (98.00 mm)
Stroke
3.39 in (86.00 mm)
3.56 in (90.50 mm)
Total piston displacement
284.6 cu in (4 663 cm
3)
333.3 cu in (5 461 cm
3)
Compression ratio
10.5:1
10.7:1
Output acc. to SAE J 1349
3
3Premium fuel required. Performance may vary with fuel octane rating.
335 hp/6 000 rpm
(250 kW/6 000 rpm)
382 hp/6 000 rpm
(285 kW/6 000 rpm)
Maximum torque
acc. to SAE J 1349
391 lb-ft/2 700 - 5 000 rpm
(460 Nm/2 700 - 5 000 rpm)
391 lb-ft/3 000 rpm
(530 Nm/3 000 rpm)
Maximum engine speed
6 500 rpm
6500 rpm
Firing order
1-5-4-2-6-3-7-8
1-5-4-2-6-3-7-8
Poly-V-belt
2 404 mm
2404 mm

752 Technical dataEngineModel
S 550 4MATIC (221.186)
1
S 600 (221.176)
1
1The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equip-
ment.Engine
273
275
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
8
12
Bore
3.86 in (98.00 mm)
3.23 in (82.00 mm)
Stroke
3.56 in (90.50 mm)
3.43 in (87.00 mm)
Total piston displacement
333.3 cu in (5 461 cm
3)
336.4 cu in (5 513 cm
3)
Compression ratio
10.5:1
9:1
Output acc. to SAE J 1349
2
2Premium fuel required. Performance may vary with fuel octane rating.
382 hp/6 000 rpm
(285 kW/6 000 rpm)
510 hp/5 000 rpm
(380 kW/5 000 rpm)
Maximum torque
acc. to SAE J 1349
391lb-ft/2800-4800rpm
(530 Nm/2 800 - 4 800 rpm)
612 lb-ft/1 800 - 3 500 rpm
(830 Nm/1 800 - 3 500 rpm)
Maximum engine speed
6500 rpm
5 950 rpm
Firing order
1-5-4-2-6-3-7-8
1-12-5-8-3-10-6-7-2-11-4-9
Poly-V-belt
2404 mm
2 370 mm

753 Technical data
Engine
Model
S 63 AMG (221.077)
1
S 65 AMG (221.179)
1
1The quoted data apply only to the standard vehicle. Contact an authorized Mercedes-Benz Center for the corresponding data of all special bodies and special equip-
ment.Engine
156
275
Mode of operation
4-stroke engine, gasoline injection
4-stroke engine, gasoline injection
No. of cylinders
8
12
Bore
4.02 in (102.20 mm)
3.25 in (82.60 mm)
Stroke
3.72 in (94.60 mm)
3.66 in (93.00 mm)
Total piston displacement
378.8 cu in (6 208 cm
3)
364.9 cu in (5 980 cm
3)
Compression ratio
11.3:1
9:1
Output acc. to SAE J 1349
2
2Premium fuel required. Performance may vary with fuel octane rating.
518 hp/6 800 rpm
(386 kW/6 800 rpm)
603 hp/4 800 - 5 100 rpm
(450 kW/4 800 - 5 100 rpm)
Maximum torque
acc. to SAE J 1349
465 lb-ft/5 200 rpm
(630 Nm/5 200 rpm)
738 lb-ft/2 000 - 4 000 rpm
(1 000 Nm/2 000 - 4 000 rpm)
Maximum engine speed
7 200 rpm
5950 rpm
Firing order
1-5-4-2-6-3-7-8
1-12-5-8-3-10-6-7-2-11-4-9
Poly-V-belt
2360 mm
2370 mm