Quote:
Originally Posted by Who
I'm inclined to think that the overall gearing is quite tall and very well suited to the powerband of the 3.8L V6. I used to frequently rent Park Aves to run around Northern Ontario and I was always impressed that the highway mileage wasn't much off what my carb'd manual Civic got.
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I've read in a couple places that the 2 valves per cylinder helps alot for low rpm air/fuel mixing, also they heat the intake mainifold with engine coolant which help for full mixing of the fuel. Tall gearing and I think a relatively aero shape help for sure too.
I had an 81 olds omega with the 2.8L V6 that would get high 20's mpg on highway trips all the time with a carb and a 3 spd auto with no torque converter if I kept the speed down around 55mph. That engine is the basis of the 3.1 used in the century.