Turbo, warm up and cool down?
18 November 2012, 07:56 PM
#3
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Hi ,some say yes and some say dont bother ,i think as long as you take it easy till up to temp you should be ok ,but i tend to let mine idle for a minute or so after hard driving ,hope this helps
18 November 2012, 07:56 PM
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When you start it's not a prob matey but don't go booting it to start with let the engine warm up, as for turning off yes you need to let it cool down the turbo runs at extreme tempatures that will evaporite the oil if its immediately turned off, if you not sure and want peace of mind buy your self a turbo timer and get it fitted.
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18 November 2012, 07:59 PM
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18 November 2012, 08:10 PM
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18 November 2012, 08:35 PM
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When you start it's not a prob matey but don't go booting it to start with let the engine warm up, as for turning off yes you need to let it cool down the turbo runs at extreme tempatures that will evaporite the oil if its immediately turned off, if you not sure and want peace of mind buy your self a turbo timer and get it fitted.
18 November 2012, 08:54 PM
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My own opinion & 2p's worth - what happens when you're sat still & not having air breeze through the engine bay ? Engine temperature rises...
That's why I don't use one or see the reason for it if you're sensible.
I just take it easy last few miles of any journeys
That's why I don't use one or see the reason for it if you're sensible.
I just take it easy last few miles of any journeys
18 November 2012, 08:59 PM
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18 November 2012, 09:06 PM
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I understand that brun but it depends on year and bhp surely I just take it as a natural thing to do with all turbos I've owned, totally agree modern turbos realistically shouldn't need it, and 100 pound for peace of mind is pittance as far as I'm concerned.
Waz it's not a engine temp issue it's an oil flow or lack of it through the turbo when you've turned the car off.
Of course just my opinion and your welcome do as you wish I do
Waz it's not a engine temp issue it's an oil flow or lack of it through the turbo when you've turned the car off.
Of course just my opinion and your welcome do as you wish I do
18 November 2012, 09:11 PM
#17
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An Impreza's turbo is water cooled and as the header tank is above the turbo, due to natural convection, the turbo will continue to be cooled after switch off - surely the amount of bhp has **** all to do with it?
18 November 2012, 09:11 PM
#18
Turbo timers are a big no no! Like above, you sit in traffic with the engine running and the temp rises.
Your better off driving off boost and let it cool. DO NOT leave your car running without you in it. It's the time of year where people let the windows melt while they are warm in the house and a theive comes along and says cheers..
Happened locally here to a woman and the stupid bint wasn't too worried as she had insurance. - They didn't cover her and she lost her BWM..
Your better off driving off boost and let it cool. DO NOT leave your car running without you in it. It's the time of year where people let the windows melt while they are warm in the house and a theive comes along and says cheers..
Happened locally here to a woman and the stupid bint wasn't too worried as she had insurance. - They didn't cover her and she lost her BWM..
18 November 2012, 09:29 PM
#19
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If the turbo is not rotating it doesn't need an oil flow and any heat remaining is removed by the coolant.
The only time a turbo timer is really needed is in a racing situation or when its a non water cooled turbo and you are using mineral oil which is prone to cook and cause carbon build up.
Semi and Full synthetics oils reduce this problem to a minimum.
18 November 2012, 09:39 PM
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Apologies I should have put for early turbos, yes I know they are water cooled, and yes new age oils cut carbon build up to a minimum but it can still happen, I don't use a turbo timer as I've no need for one I was suggesting it as a precorsion to a first time turbo owner a £100 isn't even a night on the town. I always run my engine down its something I've always done on turbos and always will weather it's needed or not
18 November 2012, 10:30 PM
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What has that got to do with anything??
If the turbo is not rotating it doesn't need an oil flow and any heat remaining is removed by the coolant.
The only time a turbo timer is really needed is in a racing situation or when its a non water cooled turbo and you are using mineral oil which is prone to cook and cause carbon build up.
Semi and Full synthetics oils reduce this problem to a minimum.
If the turbo is not rotating it doesn't need an oil flow and any heat remaining is removed by the coolant.
The only time a turbo timer is really needed is in a racing situation or when its a non water cooled turbo and you are using mineral oil which is prone to cook and cause carbon build up.
Semi and Full synthetics oils reduce this problem to a minimum.
A few years ago I had a Seat Leon 20VT as a company car (so essentially a VW Golf with a bit more poke) and I caned it everywhere and didn't worry too much about taking it easy before stopping or leaving it ticking over. When it went back to the lease company the turbo was goosed. When cold it ran OK'ish but as soon as the car got to temp if would overheat and then slow down until 70 was it and the temp gauge was in the red. Pop the bonnet and the whole turbo and exhaust manifold was glowing bright orange.
With the Evo I have now if I get back after giving it some stick the hotside is bright orange, and there is no way I'm turning the engine off then. Leave it ticking over for about 3 mins and it's OK. I accept the better solution, which I usually take, is to drive easy for the last couple of miles.
This is not as great an issue on an Impreza as the turbo is further from the exhaust valves but the principle is still the same.
19 November 2012, 07:47 AM
#23
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Sure about that?
A few years ago I had a Seat Leon 20VT as a company car (so essentially a VW Golf with a bit more poke) and I caned it everywhere and didn't worry too much about taking it easy before stopping or leaving it ticking over. When it went back to the lease company the turbo was goosed. When cold it ran OK'ish but as soon as the car got to temp if would overheat and then slow down until 70 was it and the temp gauge was in the red. Pop the bonnet and the whole turbo and exhaust manifold was glowing bright orange.
With the Evo I have now if I get back after giving it some stick the hotside is bright orange, and there is no way I'm turning the engine off then. Leave it ticking over for about 3 mins and it's OK. I accept the better solution, which I usually take, is to drive easy for the last couple of miles.
This is not as great an issue on an Impreza as the turbo is further from the exhaust valves but the principle is still the same.
A few years ago I had a Seat Leon 20VT as a company car (so essentially a VW Golf with a bit more poke) and I caned it everywhere and didn't worry too much about taking it easy before stopping or leaving it ticking over. When it went back to the lease company the turbo was goosed. When cold it ran OK'ish but as soon as the car got to temp if would overheat and then slow down until 70 was it and the temp gauge was in the red. Pop the bonnet and the whole turbo and exhaust manifold was glowing bright orange.
With the Evo I have now if I get back after giving it some stick the hotside is bright orange, and there is no way I'm turning the engine off then. Leave it ticking over for about 3 mins and it's OK. I accept the better solution, which I usually take, is to drive easy for the last couple of miles.
This is not as great an issue on an Impreza as the turbo is further from the exhaust valves but the principle is still the same.
Have you read the whole thread ???
19 November 2012, 09:37 AM
#24
Your money will be much better spent on a set of gauges, there is no turbo warm up procedure, it's the oil that needs to be up to temp before going on boost for the health and well being of the engine.
Gauges take the guess work out of this and let you know when it's all good and also when to take it easy if the oil is too hot @ circa 120 degrees.
It's good practise to take it easy for a mile or two before stopping the car, if only to be sure all is well after giving it death.
I'd recommend oil temp, pressure and boost gauges as a bare minimum, some will say it's not necessary on a road car, but i like to know whats going on under the bonnet, and a boost gauge helps with fuel economy too.
Gauges take the guess work out of this and let you know when it's all good and also when to take it easy if the oil is too hot @ circa 120 degrees.
It's good practise to take it easy for a mile or two before stopping the car, if only to be sure all is well after giving it death.
I'd recommend oil temp, pressure and boost gauges as a bare minimum, some will say it's not necessary on a road car, but i like to know whats going on under the bonnet, and a boost gauge helps with fuel economy too.
19 November 2012, 10:42 AM
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seems i need to explain myself 
I dont know the op at all so i have no idea if he is 19 and thinks he can drive like Ken Block, fills his system with tap water and occasionally adds the cheapist oil he can buy when the oil light comes on, but in replying to his question i take it as that and advice to him to let the turbo cool down (sorry should have said drive off boost),and advice if hes not sure then as a peace of mind grab a turbo timer as a precaution.
should he need one no But and thats a big BUT we have no idea how he drives or the car has or will be treated, im more than happy to suggest as a precation to get a timer fitted, of course my opinion only
I dont know the op at all so i have no idea if he is 19 and thinks he can drive like Ken Block, fills his system with tap water and occasionally adds the cheapist oil he can buy when the oil light comes on, but in replying to his question i take it as that and advice to him to let the turbo cool down (sorry should have said drive off boost),and advice if hes not sure then as a peace of mind grab a turbo timer as a precaution.
should he need one no But and thats a big BUT we have no idea how he drives or the car has or will be treated, im more than happy to suggest as a precation to get a timer fitted, of course my opinion only
19 November 2012, 02:35 PM
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turbo timer=waste of money.
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
Everything else=internet noise.
HTH the OP
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
Everything else=internet noise.
HTH the OP
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19 November 2012, 02:52 PM
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turbo timer=waste of money.
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
Everything else=internet noise.
HTH the OP
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
Everything else=internet noise.
HTH the OP
19 November 2012, 03:08 PM
#28
turbo timer=waste of money.
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
Everything else=internet noise.
HTH the OP
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
Everything else=internet noise.
HTH the OP
19 November 2012, 03:20 PM
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turbo timer=waste of money.
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
sitting stationary to warm up/cool down=waste of time.
warm up=start it drive it off boost until oil temp is up.
warm down=drive off boost for the last few miles or an appropriate distance based on the oil temp\how you have been driving the car, arrive at destination and switch engine off.
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