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Old 12-08-2003, 19:19   #1 (permalink)
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Turbo timers

I'm going to ask this question here though it first came up in another forum.

There was a discussion about fitting turbo timers to modern cars ie. WRX and XR6T.

Correct me if I'm wrong but I thought that in these days of intercoolers there would be no need to fit turbo timers as they are cooled all the time. Meaning that unless you are flogging your car you should be able to turn off the car without the turbo going through a cool down period like the days of the Nissan EXA and Cordia turbo.

Can anyone shed some light?
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Old 12-08-2003, 19:35   #2 (permalink)
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Re: Turbo timers

I believe xr6T's have a cooling down system for the turbos, so you do not need a turbo timer. and furthermore, who parks there car straight after giving your car a flogging anyway? Their a bunch of wank if you ask me
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Old 12-08-2003, 21:10   #3 (permalink)
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Re: Turbo timers

An intercooler does not cool down the turbo it is after the turbo and before the throttle body. Turbo timers help non-ball bearing turbos the most as these are the ones that tend to head up the most. The Oil cooled and ball bearing turbos dont tend to overheat.
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Old 12-08-2003, 21:18   #4 (permalink)
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Re: Turbo timers

With latter model "water cooled" as well, it's not nessessary.. A wank if you ask me !!!Besides they are a hassle to wire around alarms etc...
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Old 12-08-2003, 22:57   #5 (permalink)
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Re: Turbo timers

The idea of a turbo timer is let the oil cool down so it doesnt turn into a thick glue like substance, when turning of a car,thus blocking the oil galleriesand inturn stuffing your turbo, yes a FMIC does help but most people who wave a FMIC turn up the boost.
Anyway a turbo timer is ileagal, sort of you can not leave your car running while it is unattended, so if you take it easy for the last 5-10 mins of driving you should be able to turn the car off, without damaging the turbo.
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Old 12-09-2003, 21:45   #6 (permalink)
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Re: Turbo timers

Agreed, My Landrover manual does not even mention a cool down period although I dont make a practice of towing car trailers up big hills and switching the engine off.
The original turbos that were not watercooled and had sleeve bearings needed to cool down prior to being switched off as the oil left in the bearing would crystalise due to the high temperatures of the bearing housing on these turbos. When you started up the engine the next time there would be carbon in the bearing which could damage the bearing surfaces. As mentioned above it also caused the oil to go thick and gluggy in less extreme circumstances. So yes in most cases turbo timers are a bit of a wank as well as technically being illegal.

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Old 12-10-2003, 18:26   #7 (permalink)
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Re: Turbo timers

What happens when you pull up at a service station ? Do you sit there at the bowser for 5 mins with the car running?

Seems a bit of a hassle to me.
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Old 12-10-2003, 19:40   #8 (permalink)
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Re: Turbo timers

Quote:
Originally Posted by eb_5litre
What happens when you pull up at a service station ? Do you sit there at the bowser for 5 mins with the car running?

Seems a bit of a hassle to me.
Mate of mine had a Nissan EXA Turbo many years ago. He'd just leave it running and fill up.

It used to scare the willys out of me and everyone else filling their cars!
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Old 12-10-2003, 21:21   #9 (permalink)
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Re: Turbo timers

lol ! A little off topic, but a month or two ago, I was filling the car, a mate was inside the car (all doors etc closed), on the phone. Attendant ran out and was tapping on the glass trying to get him to hang up !?!?
Thought it was funny, if misguided . . .(sure had my mate wondering wtf was going on)
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Old 12-11-2003, 00:45   #10 (permalink)
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Re: Turbo timers

Quote:
Originally Posted by eb_5litre
What happens when you pull up at a service station ? Do you sit there at the bowser for 5 mins with the car running?

Seems a bit of a hassle to me.
Again, who flogs the crap out of there car and then pulls up at a servo?
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