mpg

[Anonymous]

What kind of gas mileage you gents getting with your turbo charged 300s, especially you guys with p/u

 

[Anonymous]

What do I have leprsy?

 

[Anonymous]

Leprosy :!: dadgum sausage fingers :x

 

[Anonymous]

Well... How is ya'lls Turbos (across the board) affecting your gas mileage

 

[Bort62]

Give it some time.

I doubt anyone here is keeping track of mileage on a turbo 300 however. There's only 2 or 3 even running.

If that many.

 

[Funky Cricket]

most are running small block turbos.

 

[BigJake34452]

my dad claims about 15 on the old setup, i dont know what it is now.. probably about the same.

 

[kirkallen143]

I've never put the two together, the go pedal is too much fun!

 

[Anonymous]

No offence to you hard corps inliner guys, but if all I was concerned about was the go pedal I'd be running a 351w or bigger. All around for my use the 300 suits me fine. I would however like to increase performance with out sacrafising gas mileage. I'm not to up to speed on Turbos, but I have been told that the Turbo could push a 300 past the 300hp mark. It has also been said that there could be a slight gain in gas mileage, but I am only at the tip of the iceberg when it comes to add-ons. So that is why I was asking about how you turbo guys were doing on gas mileage.

 

[Does10s]

Sentry,
I don't think a turbo will help fuel economy. At best it would stay the same.
More than likely your milage will go down. It'll only be due to your upcoming addiction to the sound and acceleration of the turbo and very little to do with the exhaust restriction.

And I don't know of any current, turbo'd big 6's on this site. There are a few small 6's though.
We do plan on making a couple in the near future!
Later,
Will

 

[BigJake34452]

is there any running turbo 240/300's out there besides ours?

 

[Lazy JW]

Sentry,
I don't think a turbo will help fuel economy. At best it would stay the same.
More than likely your milage will go down...

I said the same thing on a different thread and was beaten about the head and shoulders soundly. Seems the theory is that if enough boost is added then the thermal efficiency overcomes the need for richer air/fuel ratios. I dunno.
Joe

 

[ludwig]

Isn't there something about the third law of thermodynamics? It takes a fixed amount of energy to move a given mass through space at a given speed. Increasing the speed or decreasing the time to achieve this speed costs more energy, pure and simple. But if you increase the efficiency or decrease the resistance, it takes less energy overall. Seems to me that going faster more quickly will take more energy.

What say you, Mr. Newton?

 

[Anonymous]

OK.... It is my understanding that at about 9.5:1 cr its time to use better quality of fuel, which cost more per gallon. But when you increase compression you get more bang from the same air fuel mixture right?

 

[dieselmaster]

you have to use a higher octane fuel to keep from detonation. Higher the cr the more compression, more heat makes the gas want to ignite before the spark plug wants it to. Higher octane fuel is.......watered down to say, lets you push the envelope.

 

[TCIC 300ci superbeast]

when i had my 300 turbo i got about 15-17 with my foot in it and about 20-21 going "soft"

 

[rhetor]

The turbo should increase efficiency.

It is a heat pump. So is the engine. The turbo is a heat pump that utilizes both engine pumping and WASTE HEAT. This is what improves efficiency.

A very large chunk of the energy in the gasoline goes out the tail pipe as hot air.

The problem here is that the motor is too big for just moving the vehicle around. You would see the best mpg gains if the engine were in something much heavier, with boost. These motors are more efficient with the intake charge unrestricted, i.e. WOT, with a full load.