Why is it not a good idea to buy a used car with a Turbo?

[ndee]

Do you really have to handle a turbo diffrent than a normal car? If so, how?

Thanx

 

[natto fire]

it mostly depends on the car but you should figure that a turbo car has been driven by a testosterone(sp?) crazed maniac who kept iit in the boost all day long and never let the engine idle to cool the turbo down so the engine or turbo will inevitably fail soon after 100,000 miles. This is not always the case but is general rule of thumb.

 

[ndee]

A friend of mine has an Impreza and he told me that if he turns off the car, he should wait about 30secs before turning the engine off. Why?

 

[natto fire]

because you have to let the oil run through the turbo to cool it off. Otherwise the hot oil sits in the turbo and eventually causes it to fail. And how long you have to levae your car runnin depends on how much you were using the turbo.

 

[ndee]

cool. Thanks for the explanation.

 

[natto fire]

no problem. Just remember to treat a turbo engine with respect and it should last just as long as a Normally Aspirated one. Also keep in mind this is not nescessary for a supercharged engine as it is an entirely different beast.

 

[ndee]

<< Also keep in mind this is not nescessary for a supercharged engine as it is an entirely different beast. >>



What do you mean? You mean a high-horsepower machine without a turbo hasn't to be treated like a turbo one, right?

 

[yos]

Always remember to let it spool down before shutting it off...

 

[natto fire]

<<

<< Also keep in mind this is not nescessary for a supercharged engine as it is an entirely different beast. >>



What do you mean? You mean a high-horsepower machine without a turbo hasn't to be treated like a turbo one, right? >>



If you mean one with large displacement then no. It does not have to work as hard to make the horsepower. But a turbo engine is usually smaller 3.0L or smaller and has to work a lot harder to make as much horsepower and torque as say a 455. Of course most high horsepower turbo engines have reinforced internals to be able to handle the boost.