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Old 11-24-2012, 11:54 PM
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question about turbocharging a heavy car

well boys and girls your thoughts will be greatly appreciated. i am curious about the effects of turbocharging a heavy car suchas my wagon for power and economy. i do have a supercharged mustang and notice that cruising at highway speeds gets 0 boost. what about a turbo car do you get boost when cruising on the highway or would your gauge read vac like on my vortech setup. not looking to run the quarter or anything car is just a cruiser and was curios about a little more power and economy

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Old 11-25-2012, 07:13 AM
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you won't get better economy but you can get more power and yes the boost gauge will ready simmilar to a supercharged engine.
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Old 11-25-2012, 08:00 AM
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Well with turbo car on the highway you just tip into the throttle and the boost comes right up. For this reason a light right foot can save a few drops of gas. But when fully floored it will use more gas. There is a point where a heavy car can save a few mpg but i usally am in the gas so much the effects are nil if not worse gas milage.

You do not want it to boost at highway or steady throttle postions. Basicly you want it to use zero boost when at highway constant speed but jump into the boost as soon as you punch it. And it will v8 work very well with turbos.

Single turbo will work good for your appllication. No need to go duals. The turbo on my civic can support 600 hp. Use a cheap garret t3/t4 hybrid. Get one that is remanufactured they are cheap and dont offer anything less than a brand new one except for a 600 dollar price difference.

What type of engine? Does the car have an X type frame? Turbos can be very easy on the car with smooth power on and low boost levels off the line. Dont worry about lag high compression v8's will spool a single turbo almost before the car begins to move. But tq will be there and can put heavy loads on frame and other suspension parts. Even a mild turbo build on a strong v8 can but 500 ftlbs of tq to the ground. This will for sure move the car but could also cause some unforseen issues. Until you get to the late 60's the frames on most cars were not built to take that kind of power. Not to say they will break easily but its not hard to over shoot the mark with a nice turbo setup.
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