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V8 Dakotas
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2K1CC4.7L4X4
Dodge Dakota
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6/25/2003
17:50:50
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 Subject: The 4.7L
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As the first member of Chrysler's first new V-8 family since the 1960s, the 4.7 has more power, less weight, increased fuel efficiency, and lower emissions than the LA series 318 - a member of sole remaining V-8 family from the 1960s. A new V-6 and V-10 are also planned, both to be based on the 4.7, in much the same way as the current 3.9 V-6 and V-10 are based on the LA 318 and 360.
On the Jeep, it is mated with an all-new, electronically-controlled transmission with five forward ratios. An alternate second gear ratio will provide improved performance. A 3.7 liter version of the 4.7 is used on the 2002 and up Jeep Liberty (known as the Cherokee outside North America).
The 4.7 has, on the Jeep, 235 horsepower (over 172 kW) and 295 lb.-ft. (400 Nm) of torque, slightly more power than the 318. It produces 30% less pollution, noise, vibration, and harshness. Fuel economy is 7% better with the new four-speed automatic. The engine has more pulling power, faster initial acceleration, and three miles per gallon better economy.
Buddy Revell pointed out that the new engine is "almost" a Hemi - "the only reason it isn't called a hemi is because the combustion chambers have a wall on one side that makes it look kind of like a flat tire. Other than that everything is in the same arangment. The valve springs are across from each other and the spark plug goes right down the middle."
The 4.7 has a cast iron block and two cast aluminum cylinder heads with a single overhead camshaft per bank and two valves per cylinder. It displaces 4701 cm3 (287 cu in.). A relatively small bore of 3.66 inches (93 mm) helped reduce overall length of the engine, packaging it for the compact engine bay of the Grand Cherokee. The stroke is 3.4 inches (86.5 mm).
A natural-gas version for the Charger concept car produces 300 hp.
Breathing features include a new tuned-length runner intake manifold, free-flowing intake and exhaust ports and fast-burn combustion chambers. Operating with a high 9.3:1 compression ratio, the engine still only requires regular-grade fuel.
Lightweight material applications and more efficient engine accessories such as the alternator, power steering pump and air conditioning compressor further bolster performance and economy. Aluminum cylinder heads, a hollow camshaft with sintered steel lobes, magnesium valve covers and a molded composite intake manifold contribute to an overall weight reduction of 54 pounds (24 kg) compared to the previous 5.2-liter engine.
Driveability is enhanced by variable fuel injection timing, sequential multi-port injection, a quick-sensing inlet-side positioned thermostat and coil-on-plug ignition, in which each individual spark plug has its own secondary ignition coil.
In order to improve fuel economy, the new engine features a patented hybrid cooling fan system that combines in-line electric and engine-driven fans. This system allows the engine fan to idle at a very low speed (250-300 rpm. vs. the typical 650-700 rpm.), decreasing noise and vibration at idle and low speeds. The newly designed cooling system, with a high efficiency water pump and a secondary thermostat control, reduces power consumption by 12 percent (6 bhp/4.5 kW).
The new coil-on-plug ignition system, two-stage chain cam drive with automatic tensioners, premium gaskets and cylinder head mounted fuel injectors are a few of the basic design features that provide for a greatly increased engine life. The engine is designed to operate 150,000 miles (240,000 km) under normal conditions without part replacement other than normal maintenance items. A new automatic serpentine belt tensioner increases the average accessory belt life to 100,000 miles (160,000 km).
|
2K1CC4.7L4X4
Dodge Dakota
JOIN HERE
6/25/2003
18:12:26
| RE: The 4.7L
IP: Logged
Message:
As the first member of Chrysler's first new V-8 family since the 1960s, the 4.7 has more power, less weight, increased fuel efficiency, and lower emissions than the LA series 318 - a member of sole remaining V-8 family from the 1960s. A new V-6 and V-10 are also planned, both to be based on the 4.7, in much the same way as the current 3.9 V-6 and V-10 are based on the LA 318 and 360.
On the Jeep, it is mated with an all-new, electronically-controlled transmission with five forward ratios. An alternate second gear ratio will provide improved performance. A 3.7 liter version of the 4.7 is used on the 2002 and up Jeep Liberty (known as the Cherokee outside North America).
The 4.7 has, on the Jeep, 235 horsepower (over 172 kW) and 295 lb.-ft. (400 Nm) of torque, slightly more power than the 318. It produces 30% less pollution, noise, vibration, and harshness. Fuel economy is 7% better with the new four-speed automatic. The engine has more pulling power, faster initial acceleration, and three miles per gallon better economy.
Buddy Revell pointed out that the new engine is "almost" a Hemi - "the only reason it isn't called a hemi is because the combustion chambers have a wall on one side that makes it look kind of like a flat tire. Other than that everything is in the same arangment. The valve springs are across from each other and the spark plug goes right down the middle."
The 4.7 has a cast iron block and two cast aluminum cylinder heads with a single overhead camshaft per bank and two valves per cylinder. It displaces 4701 cm3 (287 cu in.). A relatively small bore of 3.66 inches (93 mm) helped reduce overall length of the engine, packaging it for the compact engine bay of the Grand Cherokee. The stroke is 3.4 inches (86.5 mm).
A natural-gas version for the Charger concept car produces 300 hp.
Breathing features include a new tuned-length runner intake manifold, free-flowing intake and exhaust ports and fast-burn combustion chambers. Operating with a high 9.3:1 compression ratio, the engine still only requires regular-grade fuel.
Lightweight material applications and more efficient engine accessories such as the alternator, power steering pump and air conditioning compressor further bolster performance and economy. Aluminum cylinder heads, a hollow camshaft with sintered steel lobes, magnesium valve covers and a molded composite intake manifold contribute to an overall weight reduction of 54 pounds (24 kg) compared to the previous 5.2-liter engine.
Driveability is enhanced by variable fuel injection timing, sequential multi-port injection, a quick-sensing inlet-side positioned thermostat and coil-on-plug ignition, in which each individual spark plug has its own secondary ignition coil.
In order to improve fuel economy, the new engine features a patented hybrid cooling fan system that combines in-line electric and engine-driven fans. This system allows the engine fan to idle at a very low speed (250-300 rpm. vs. the typical 650-700 rpm.), decreasing noise and vibration at idle and low speeds. The newly designed cooling system, with a high efficiency water pump and a secondary thermostat control, reduces power consumption by 12 percent (6 bhp/4.5 kW).
The new coil-on-plug ignition system, two-stage chain cam drive with automatic tensioners, premium gaskets and cylinder head mounted fuel injectors are a few of the basic design features that provide for a greatly increased engine life. The engine is designed to operate 150,000 miles (240,000 km) under normal conditions without part replacement other than normal maintenance items. A new automatic serpentine belt tensioner increases the average accessory belt life to 100,000 miles (160,000 km).
|
2K1CC4.7L4X4
Dodge Dakota
JOIN HERE
6/25/2003
18:12:27
| RE: The 4.7L
IP: Logged
Message:
As the first member of Chrysler's first new V-8 family since the 1960s, the 4.7 has more power, less weight, increased fuel efficiency, and lower emissions than the LA series 318 - a member of sole remaining V-8 family from the 1960s. A new V-6 and V-10 are also planned, both to be based on the 4.7, in much the same way as the current 3.9 V-6 and V-10 are based on the LA 318 and 360.
On the Jeep, it is mated with an all-new, electronically-controlled transmission with five forward ratios. An alternate second gear ratio will provide improved performance. A 3.7 liter version of the 4.7 is used on the 2002 and up Jeep Liberty (known as the Cherokee outside North America).
The 4.7 has, on the Jeep, 235 horsepower (over 172 kW) and 295 lb.-ft. (400 Nm) of torque, slightly more power than the 318. It produces 30% less pollution, noise, vibration, and harshness. Fuel economy is 7% better with the new four-speed automatic. The engine has more pulling power, faster initial acceleration, and three miles per gallon better economy.
Buddy Revell pointed out that the new engine is "almost" a Hemi - "the only reason it isn't called a hemi is because the combustion chambers have a wall on one side that makes it look kind of like a flat tire. Other than that everything is in the same arangment. The valve springs are across from each other and the spark plug goes right down the middle."
The 4.7 has a cast iron block and two cast aluminum cylinder heads with a single overhead camshaft per bank and two valves per cylinder. It displaces 4701 cm3 (287 cu in.). A relatively small bore of 3.66 inches (93 mm) helped reduce overall length of the engine, packaging it for the compact engine bay of the Grand Cherokee. The stroke is 3.4 inches (86.5 mm).
A natural-gas version for the Charger concept car produces 300 hp.
Breathing features include a new tuned-length runner intake manifold, free-flowing intake and exhaust ports and fast-burn combustion chambers. Operating with a high 9.3:1 compression ratio, the engine still only requires regular-grade fuel.
Lightweight material applications and more efficient engine accessories such as the alternator, power steering pump and air conditioning compressor further bolster performance and economy. Aluminum cylinder heads, a hollow camshaft with sintered steel lobes, magnesium valve covers and a molded composite intake manifold contribute to an overall weight reduction of 54 pounds (24 kg) compared to the previous 5.2-liter engine.
Driveability is enhanced by variable fuel injection timing, sequential multi-port injection, a quick-sensing inlet-side positioned thermostat and coil-on-plug ignition, in which each individual spark plug has its own secondary ignition coil.
In order to improve fuel economy, the new engine features a patented hybrid cooling fan system that combines in-line electric and engine-driven fans. This system allows the engine fan to idle at a very low speed (250-300 rpm. vs. the typical 650-700 rpm.), decreasing noise and vibration at idle and low speeds. The newly designed cooling system, with a high efficiency water pump and a secondary thermostat control, reduces power consumption by 12 percent (6 bhp/4.5 kW).
The new coil-on-plug ignition system, two-stage chain cam drive with automatic tensioners, premium gaskets and cylinder head mounted fuel injectors are a few of the basic design features that provide for a greatly increased engine life. The engine is designed to operate 150,000 miles (240,000 km) under normal conditions without part replacement other than normal maintenance items. A new automatic serpentine belt tensioner increases the average accessory belt life to 100,000 miles (160,000 km).
|
Fred
Dodge Dakota
JOIN HERE
6/25/2003
18:29:48
| RE: The 4.7L
IP: Logged
Message:
the whole thing needs to be posted 1 more time, the first 3 times just weren't enough!!!
|
Fred
Dodge Dakota
JOIN HERE
6/25/2003
18:38:44
| RE: The 4.7L
IP: Logged
Message:
the whole thing needs to be posted 1 more time, the first 3 times just weren't enough!!!
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Fred
Dodge Dakota
JOIN HERE
6/25/2003
18:38:44
| RE: The 4.7L
IP: Logged
Message:
the whole thing needs to be posted 1 more time, the first 3 times just weren't enough!!!
|
Fred
Dodge Dakota
JOIN HERE
6/25/2003
18:38:45
| RE: The 4.7L
IP: Logged
Message:
the whole thing needs to be posted 1 more time, the first 3 times just weren't enough!!!
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gotanRT
Dodge Dakota
JOIN HERE
6/26/2003
00:27:33
| RE: The 4.7L
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Message:
i agree fred...some things still need to be cleared up...
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Question
Dodge Dakota
JOIN HERE
6/26/2003
12:39:45
| RE: The 4.7L
IP: Logged
Message:
How are babies made?
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