What are the differences between a 2.5L 4 cylinder vehicle and a 2.5L 6 cylinder vehicle. Apart from more cylinders on the V6?
by 
Jimmyz101
ANSWERS: 2
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well, for one thing the v6 will be smoother running.
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The number of cylinders has almost nothing to do with the ultimate power output of an engine (within reasonable limits). An engine's power level is determined by its displacement, so 2.5L engines of almost any configuration will have roughly equal power. Comparing an inline 4-cylinder with a V-6 of similar displacement, you'll typically find the following differences. 1) The V-6 is shorter lengthwise (3+ cylinders long) than the I-4. 2) The V-6 is shorter heightwise than the I-4 (due to cylinders being splayed at an angle), but the V-6 will be wider. 3) The V-6 will generate less drivetrain vibration because it has a power stroke (cylinder firing) every 120 degrees of crankshaft rotation versus a power stroke every 180 degrees for the I-4. 4) If properly designed (with a 60 degree V-angle between banks), the V-6 is inherently balanced and will generate little shaking. In contrast, an I-4 engine is not inherently balanced and will generate 'second-order' shaking vibrations. http://auto.howstuffworks.com/engine.htm
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