Well, since I'm interested in some new powerplant options, I figured I'd contribute to the Euro section.
The Mercedes-Benz M104 was a straight-6 automobile engine produced from 1990 through 1997. It was a double overhead cam design with 4 valves per cylinder. It replaced the M103 and was replaced by the M112 V6 starting in 1997. The M104 continued in production under license by SsangYong Motor Company of Korea.
3.0 L M104.98x
This 3.0 L 24v DOHC engine replaced the 12v 3.0 L M103 engine. It was found in the W124 300E-24 models, W124 300CE-24 models, W124 300TE-24 models and R129 300SL-24 models. The 3.0 L M104 produced 217 hp(162 kW) and features KE-Jetronic fuel injection, cylinder specific ignition-timing, variable valve timing and under-piston cooling jets. It was replaced by the 2.8 L and 3.2 L M104 engines.
2.8 L M104.94x
After the W124 received a facelift 2 capacities replaced the 3.0 litre, a 2.8 litre lower power version and a 3.2 litre version. The 2.8 L M104 produced 197 hp(145 kW) at 5500 rpm. Max torque was 270 N·m or 199 ft/lbs at 3750 rpm. Lubrication system is pressure circulation lubrication. Amount of oil in engine is 7.5 litres and amount of coolant in engine is 9 litres. Number of valves is 2 intake and 2 exhaust with V-shaped overhead configuration. Valve operation is 2 top camshaft. Camshaft drive is duplex roller chain. Starter motor is electrical with 1.7 kW. Ignition system is ignition mapping control. The 2.8 L M104 was also used in the W202 C-Class model C280 and in the W140 S-Class model S280 (the latter was not sold in North America).
3.2 L M104.99x
The 3.2 L (3199 cc) version produced 220 hp (161 kW) at 5500 rpm and 310 N·m (229 ft·lbf) at 3750 rpm. This engine was found in the W124 and W210 E-Class, W140 S-Class, W463 G-Class, and R129 SL-Class.
AMG 3.4 L:
There were 3.4 L conversions done to the 3.0 L M104.980 by AMG, prior to their formal cooperation with Daimler Benz.
AMG developed a 3.4 L M104 that was used in the E34 and E34T AMG (W124) vehicles. Amount of oil in engine is 7.5 litres and amount of coolant in engine is 9 litres. It made 272ps at 6500rpm and used Bosch KE-Jetronic (CIS-E) injection.
AMG 3.6 L M104.941
There were 3.6 L conversions done to both the M103 and M104 by Brabus, among others.
AMG developed a 3.6 L M104 that was used in the W202 C36 AMG (W202),the W124 E36 AMG (W124) and the E36 AMG (W210) vehicles.
The AMG 3.6 M104 was rated at 276 horsepower (206 kW) at 5,750 rpm and 284 foot-pounds force (385 N·m) of torque at 4,000 rpm using the HFM engine management system.
The boost in power was obtained by stroking the 2,8 litre M104 using the crank from the 350sd engine.
AMG 3.6 Liter M104 in a W124 E36T AMG
Turbocharger kits were offered for both the M103 and M104 engines by Turbo Technics, Mosselman, Lotec and other tuners. These conversions typically raised engine output to between 300 and 400 horsepower (300 kW). During the 1990s UK customers were able to buy new vehicles eqipped with a Turbo Technics conversion directly from Mercedes dealer Hughes of Beaconsfield (limited run of 75 conversions).
Retrieved from "http://en.wikipedia.org/wiki/Mercedes-Benz_M104_engine"
Categories: Mercedes-Benz engines
The Mercedes-Benz M103 was a straight-6 15 degrees inclination to the right; automobile engine produced from 1986 through 1993. It was a single overhead cam design with 2 valves per cylinder. The M103 was replaced by the DOHC M104 starting in 1990.
The 103.980 engine (181 in.³ or 2960 cm³) produces 177 hp or 132 kW at 5700 rpm (with catalyst), 185 hp or 138 kW at 5700 rpm (without catalyst), and has a torque of 188 ft·lbf or 255 N·m at 4400 rpm (with catalyst), 191 ft·lbf or 260 N·m at 4400 rpm (without catalyst). It uses the CIS-E (Continuous Injection System - Electronic) and has a bore of 88.5 mm (3.48 in) and a stroke of 80.2 mm (3.16 in). The compression ratio is 9.2 : 1 with a redline of 6550 rpm in 1987 and 6200 rpm from 1988 on. The firing order is 1-5-3-6-2-4. Lubrication system is pressure circulation lubrication system. Amount of oil in engine is 6.0 litres and amount of coolant is 8.5 litres. Number of valves is 1 intake, 1 exhaust with V-shaped overhead configuration. Valve operation was 1 top camshaft. Camshaft drive was simple roller-type chain. Starter motor is electrical with 1.5 kW; since 01.88 was 1.7 kW. Ignition system is electronic ignition system. Recommended fuel octane for the M103 is 91 RON/MON (96 RON)(86 MON). This engine can be found in the W124 E-Class, W126 S-Class Mercedes-Benz R129, W463 G-Class and the R107.
The smaller 103.940 engine (158 in.³ or 2597 cm³) produces 160 hp or 122 kW at 5800 rpm (with catalyst), 166 hp or 124 kW at 5800 rpm (without catalyst), and generates torque at 162 ft·lbf or 220 N·m at 4600 rpm (with catalyst), 168 ft·lbf or 228 N·m at 4600 rpm (without catalyst). It also used the CIS-E engine management system and had a bore of 82.9 mm (3.26 in) and a stroke of 80.2 mm (3.16 in). The only mechanical differences from the M103 3.0 L to the M103 2.6 L were the decrease in bore, smaller intake valves and a slightly different airbox. The CIS-E components between 2.6 and 3.0 variants are all shared for any given model year with the exception of the ECU making engine swaps from 2.6 to 3.0 virtually bolt-in. The Mercedes Benz 722-series automatic gearbox to which it is usually linked (5-speed manuals were available on some models but are quite rare) is calibrated to take off in second gear to reduce "creeping" and provide a smoother ride. The transmission will select 1st only if the selector is in "2" or in case of abrupt acceleration. Other attributes of this transmission include a 2-3 shift delay when the engine is cold in order to speed up catalyst warm-up. 4th gear is a 1:1 ratio meaning that cruising at about 100km/h (62mph)generates engine speeds around 3000rpm. This engine can be found in the W201 190 and W124 E-Class,and W126 S-Class.