Wrangler Fanatics Love the 4.0 liter Jeep Engine
The sales people on the floor of a Jeep dealership took pride in their beloved Jeep Wrangler thanks in one part to the 4.0 liter engine under the hood. Rebuilt Jeep Wrangler 4.0 Liter Engines for Sale have more power than the original motor. The engine has great genes since it was the off-spring of the Typhoon six, which made its debut in 1964. The engine used a cast-iron shallow-skirt block with bores that were evenly spaced, plus it had loop-flow combustion chambers, a seven-main-bearing crankshaft, and in-line valves.
AMC had been using a finicky 2800cc V6 from General Motors and AMC’s own 4.2 liter 258 CID straight six, which had been around since 1964. The 4.2 liter engine was used in the CJ7, the Eagle, the Concord, and the Spirit. A similar 2.5 liter 4-cylinder 125 horsepower engine was introduced in 1983, but the Chrysler version only produce a meager 100 horsepower without a turbocharger so AMC engineers produce two engines to replace it. One was the 2.5 liter 4-cylinder, and the other one was the 4.0 liter 6-cylinder.
When the 4.0 liter 6-cylinder hit the market in the Wrangler it had 180 horsepower, and 177 horsepower in the Cherokee. Jeep’s 4.0 L 6-cylinder had more power than GM’s 4.3 liter V6, Ford’s 4.9 litre inline-6, and Chrysler’s 5.2 L, which only produce 170 horsepower. Jeep continued to tweak the engine until it reached 190 horsepower in the 1991 Cherokee.
Even the Japanese six cylinder engines were no match for the 4.0 liter Jeep engine. The jeep engine produced more horsepower and got better fuel mileage than the engines in all the Japanese trucks.
The AMC Concord May Have Been a Better Police Vehicle
Most police units drove Chevy Caprices and Ford Crown Victoria’s back in the 1990s, but if horsepower was the deciding factor for excellent pursuit vehicles then the Concord with the 4.0 liter Jeep engine was a sure miss. The engines used in the Dodge Ram and Dakota, which were the pre-Magnum 318 V8, and the 3.9 litre V6 were no match for the 4.0 liter jeep engine either; it could have been a better engine choice, but not a realistic one in those vehicles.
The 4.0 liter Jeep engine went though a plethora of changes which reduced early model noise, harshness, and vibration. The engine continues to be a strong performer with a few fixable flaws.
We sell 4.0 liter Jeep engines and parts. Call RebuiltEngines.co for a free quote and find out why we sell peace of mind with every rebuilt engine.
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