Quote:
Originally Posted by Yaristock
Weren't you the guy who said the I4 was more economical than an I3. Have a change of heart? Those little things barely make any power, a straight pipe would strip what little you have on the low end, and couple reduce backpressure so drastically that the engine would probably stall right after starting. On the right track thought.
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I'll have what you are smoking. I asked the question why the I4 turning at 2400rpm wouldnt be more economical than the I3 turning at 3200rpm ,especially since i travel alot of miles at a time.
The reasons were;
1. the frictional losses would be lower in the I4 because since there is the same amout of cylinders firing per minute. the I4 is turning slower and friction increase as a square of speed.
2. the accesories are turning slower in the I4, just like if you used an underdrive pulley.
3. The motor should last 25% longer
But i never did get a real answer, people kept talking about idling and how many injectors were firing. hell one guy even talked about how those old out-of-date bulky, performance v8's were less economical than a little motor.