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Old 01-24-2006, 05:52 PM   #1
0BlueSTi4
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Default Do I need a turbo timer on 04 STi?

I was reading about turbo timers and it mentioned that some cars like Audi TT comes with a turbo timer which will pump oil for 30 seconds after the engine is shut off. I am wondering if by any chance 04 STi's come with a turbo timer? Does it need one? Just how much difference would a turbo timer make over the years? If anyone have any info or statistics that would be very helpful. Also how well do aftermarket turbo timers integrate with OEM alarm systems? Can one lock/arm the car while its on a timer? What about stealing a car while its on a timer; do most reputable timers (like Blitz) have some kind of safeguard against someone trying to steal a car while its on a timer?

Thanks in advance!
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Old 01-24-2006, 05:53 PM   #2
sdogg3kgt
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Does the manual say you need one? No.

So you don't need one. Waste of money. The car is designed to cool the turbo even after you turn off your car.

Do a search and you will find a gazilion threads on this.
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Old 01-24-2006, 05:54 PM   #3
scooby_wooby
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turbo timer = bling ..
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Old 01-24-2006, 06:05 PM   #4
0BlueSTi4
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Quote:
Originally Posted by sdogg3kgt
The car is designed to cool the turbo even after you turn off your car.
Is there a way to tell when its cooling down? Anyone have more details on just how this cooling is achieved? For how long?

I was hoping that guys at Subaru took this into consideration; I like my car the way it is, simple and functional, and would hate to have to get cluttering unnecessary bling!

I did a search on this, but did not see anything relevant. Perhaps I should have tried some other keywords, but if someone could point me to a comprehensive thread on this I would really appreciate this.

Thanks!
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Old 01-24-2006, 06:25 PM   #5
WR^2X
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It goes to work as soon as you shut the car off. The coolant tank is high up in engine, so coolant continues to circulate once the engine is shut off. This allows the oil to cool gradually, negating the need for a turbo timer.

The heat contained in the turbo charger will begin to vaporize the coolant in the turbo charger after the engine is stopped. The hot vapor will enter the coolant reservoir tank, which is the highest point of the coolant system. At the same time that the vapor exits that turbo charger, coolant supplied from the right bank cylinder head flows in to the charger. This action cools the turbo charger down. This process will continue until the vaporizing action in the turbo charger has stopped or cooled down."
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Old 01-24-2006, 06:39 PM   #6
Kean
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...and just so you know WR^2X isn't talking out of his rear, here is a link to the official document he is quoting (explanation still applies to later models): http://www.subaruwest.com/PDF_files/...1_techtips.pdf

Quote:
2002MY WRX TURBO COOL DOWN PROCEDURE
FHI's position regarding this is that it is not necessary to perform a "cool down/idling" procedure, as was recommended with past turbo models. Our current 2.0L turbo engine has a far greater cooling capacity and, coupled with technology advances, makes this practice no longer necessary. This explains why information about cool down is not included in the 2002MY Impreza Owner's Manual.

The heat contained in the turbo charger will begin to vaporize the coolant at the turbo charger after the engine is stopped. This hot vapor will then enter the coolant reservoir tank which is the highest point of the coolant system. At the same time the vapor exits the turbo charger, coolant supplied from the right bank cylinder head flows into the turbo. This action cools the turbo charger down. This process will continue until the vaporizing action in the turbo charger has stopped or cooled down.
This and answers to many other FAQ's can be found here (Unabomers Manifesto):
http://forums.nasioc.com/forums/showthread.php?t=533787

....and this is a link to one regarding Turbo Timers:
http://forums.nasioc.com/forums/show...hreadid=465156
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Old 01-24-2006, 06:45 PM   #7
darksands
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Quote:
Originally Posted by scooby_wooby
turbo timer = bling ..
Yes... and thats why you need one. Dont you hate it when you turn your car off and you find out that someone forgot to roll the window up or was in the process of rolling windows up? Then you have to put the key back in and turn to the on position again and that sucks when your halfway out of the car. Thats what a turbo timer is used for. Rolling up your windows.
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Old 01-24-2006, 07:48 PM   #8
WillisW555
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Quote:
Originally Posted by sdogg3kgt
Does the manual say you need one? No.
Do any cars manuals state that you should install a turbo timer? So no car needs one?

Most manuals for turbo cars will just tell you idle the car, but the Subaru has the coolant vaporizing thing so on a Subaru... and Saabs I belive too. My friend said he is supposed to idle his SRT-4 for 3 minutes after hard driving. I'm glad I don't have to sit there that long.

Just drive sensibly prior to parking the car, idle for a few seconds while gathering your stuff and then shut the car off.
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Old 01-24-2006, 07:50 PM   #9
Demon Llama
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either/or.

doesnt hurt either way.
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Old 01-24-2006, 11:22 PM   #10
chopstix
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to follow up with another newbie question what about the 40t? I just ordered that am debating whether I will need a turbo timer for it. Or does the same apply with this turbo as the stock turbo?
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Old 01-24-2006, 11:27 PM   #11
WR^2X
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If it's oil and water cooled (I know nothing about that turbo), then you don't need a turbo timer. If it's only oil cooled, then you'll want to get a turbo timer.
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