How can Nissan make a V6 engine more powerful than Jeeps V6?

The V6 engine on the Jeep Grand Cherokee is 210 horsepower, while the V6 on the Nissan Pathfinder is 266 HP. The Jeep get 15/20 mileage and the Nissan gets 14/20, not that different. How does Nissan make a more powerful, almost just as efficient same size engine as Jeep?|||their technology in engine development is was far advanced than ours is,and they have the means to do it with,they will spend way more money on research than we will also,American car company's wont spend the money to do the research to help make better engines,Nissan will that's why right now their one of the best deals going on a new car ,their technology is way ahead of ours,good luck.|||we need to catch up to them,or we,ll loose out car industry,good luck.

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|||Japanese technology has always been more efficient and better designed them the american counterparts.|||Horsepower can be affected by a LOT of things ... the type of fuel injector used... the richness of the fuel mixture within the combustion chamber... the gear ratio... the way an engine is tuned... the exhaust system... etc., etc., etc.|||The average Nissan costs more than the average jeep too. You could make changes to the Jeep's engine that would make it more powerful too. Things like more efficient air intakes, high performance exhaust and higher end fuel injection, turbos - all kinds of things.





Nissan puts their money into performance. Jeep puts their money into off-road design and durability. And the japanese have always been efficient. My Saturn Vue V6 (with Honda guts in it) was 250 HP stock in 2004. Just a little aftermarket equipment in it and I'm pushing 280 now. Jeep could do it too, but American engines have always been more about size and less about efficiency.|||The answer is simple.... American built engines use 1960's technology, push rod and overhead valves and long piston stroke engines.... European and Japanese engines, by contrast, usually short stroke bores and have twin overhead camshafts, 16 to 36 valves that allows the engine to breath more efficiently, this gives more horse-power and is more fuel efficient, too. Also, the use of stick-shift (manual gearboxes), reduced fuel consumption. I hope that helps.|||Keep in mind the Nissan V6 is a 4.0L, compared to a 3.7L V6 in the Jeep. Displacement means a lot when it comes to power.





Efficiency comes from getting the most out of the burning fuel. That comes from a well designed combustion chamber, weight of the vehicle, and a million other things. I think you might be comparing apples to oranges. The only true (und totally impractical) comparison would be to put the Nissan V6 into the Jeep and see if you get the same performance and economy.