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Which Form of Forced Induction would You Choose? Turbocharger or Supercharger?
Posted 5/13/08

ca18det wrote:

Does that include Nitrous Oxide, cause i have turbo/nos setup, TURBO!!!

its really easy to blow your turbo with that setup, nitro will probly halfen the already short turbo's lifespan. But if you have it enjoy it. If you really wanna get it to scream, cheapest/easiest way to add to what you already have is get cold air intake and fill your car with premium. Also cold air intake can increase the lifespan of your turbo, just make sure to take it off in really cold weather.
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22 / M / Aberdeeeeeeeen
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Posted 5/13/08
But turbos only die if the oil is left in (say if the engine was turned off as soon as it was brought to a halt as when its started the bearings are clootered in grit? whereas if the oil was left to circulate for a while after being stopped the oil would be cleaner and the car would be started? im not sure on this one so correct me if im wrong?
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74 / M / california
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Posted 5/13/08
whats the difference
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27 / M / MJC
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Posted 5/13/08

varnlestoff wrote:


ca18det wrote:

Does that include Nitrous Oxide, cause i have turbo/nos setup, TURBO!!!

its really easy to blow your turbo with that setup, nitro will probly halfen the already short turbo's lifespan. But if you have it enjoy it. If you really wanna get it to scream, cheapest/easiest way to add to what you already have is get cold air intake and fill your car with premium. Also cold air intake can increase the lifespan of your turbo, just make sure to take it off in really cold weather.


yea its pretty fun 2 have it, i only drive on occasion or when sum1 wants 2 run
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25 / M / Oklahoma
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Posted 5/13/08

Beetledude wrote:

But turbos only die if the oil is left in (say if the engine was turned off as soon as it was brought to a halt as when its started the bearings are clootered in grit? whereas if the oil was left to circulate for a while after being stopped the oil would be cleaner and the car would be started? im not sure on this one so correct me if im wrong?


I wish I understood what you're trying to say.
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22 / F / Nebraska
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Posted 5/13/08 , edited 5/13/08
^ I'm not entirely sure myself, but I think he was talking about prolonging a turbocharger's life by giving it a cool down period before turning the car off.

But to answer the question from what I got from it. Yeah keeping the engine running for some time after running the turbo is essential if you want it to last. Its not so much that dirt and grit will build up and kill it, I believe its more because of the heat.
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25 / M / Chicago
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Posted 5/13/08
It's called a turbo timer.

A turbo timer is a device that allows your turbocharged car to idle for a specified period of time before shutting the engine off.

The shafts on most turbochargers spin in excess of 50,000 RPM and generate lots of heat. To keep your turbocharger's heat under control, most are cooled by circulating oil or water (coolant) around the shaft. The turbocharger's shaft is free to rotate at will and there is no way to stop the shaft from spinning after shutting the engine off. To dissipate and stabilze the heat in the turbocharger, most manufacturers recommend that a car be idled for a period of time after moderate to hard driving to allow the oil/water to take heat out of the turbocharger.

Failure to reduce the temperature of the turbo could result in the oil around the shaft "coking". Coking is basically the baking of oil, turning it into a hard substance that could plug your oil lines and cause oil "starvation", preventing proper cooling of your turbocharger and reducing it's operating lifespan.

GG google..
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22 / F / Nebraska
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Posted 5/13/08
Yeah turbo timer units are out there.
I've never done the research, but will it kill the engine itself after the predetermined idle time is reached?
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25 / M / Chicago
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Posted 5/13/08
Yup, that's the point of having a turbo timer. You need to properly set it up because not all cars are the same. For example, it's not quite working well with the Evo X.
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22 / F / Nebraska
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Posted 5/13/08
What I wonder now is, cars that come turbo'd from the factory...friends of mine that have owned turbo'd VWs or the STI, none of them have ever gave their cars a cool-down period.
And being a mechanic myself, when I worked at a shop, I don't recall myself or any one of the techs having to replace a blown turbo on those vehicles that are factory turbo'd.
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Posted 5/13/08
theres a big difference between a stock turbod car and an car thats been turbocharged from an NA form.
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22 / F / Nebraska
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Posted 5/13/08
Yeah but shouldn't the cooling effects be the same?
I don't exactly know if the factory turbo'd cars have a different method cooling or not though.
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27 / M / Philadelphia
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Posted 5/13/08 , edited 5/13/08
There really isnt much of a difference. Its called just let your car idle normally for a minute or two after you run it hard and it will be cool. Ive never had a turbo timer on any of my cars. Its a complete waste of money. Why pay money to be lazy? All it lets you do is walk away from the car so it just saves you a minute of your time...

I mean.. who the hell runs the shit out of their motors and right afterwards shuts it off? Nobody. Driving/crusing for a little bit a minute or two after the pull cool the motor down enough.
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22 / F / Nebraska
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Posted 5/13/08
So how come factory turbos are so much less prone to damage due to improper cool-down?
They only thing I can think of is that they would run less boost, but an 06 STi runs at about 14 psi.
Aha I don't know...I'm completely stumped.
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27 / M / Philadelphia
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Posted 5/13/08
They are not less prone to it. There is really nothing differently build between a aftermarket turbo or factory turbo. The pressure plays a role in it but not really a drastic one. You can blow up a new factory turbo just as fast as an aftermarket one
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