iddling after driving hard?

[CUP-RACING]

for those of you who have turbos, who lets there car iddle after hard driving and how long for?

I generally leave mine iddling for a minute or so. I did this before and after remapping.

 

[steveb8189]

I usually leave mine for about 20 seconds, maybe a bit longer if i've been driving hard. Not sure if it makes any differnece though.

Anyone know how long it actually takes the turbo to spool down?

 

[dasmith83]

this would be interesting to know...i generally leave mine for a minute or so if driving really hard....if a lil hard about 30secs or so...if normal...about 5 secs.

I've been told you need to let the turbo slow down or somthing, cos if its still going mental and you switch of the car...the oil stops getting to it but the turbo still spins, therfore damaging and shortening the life of the turbo.

but hey, i know naff all about engine and turbos, so that could be a load of crap for all i know!

 

[Ric 2001]

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, it is 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

Though the oil pump, to the turbo, does carry on for a period of time after you shut the engine down.

 

[Rosco906]

i give mines 30 sec's after normal driving anyway and give it a few about 20 sec's when i start the car up aswel but dont drive it hard till its warm

 

[dasmith83]

same ere rosco...hate how it feels when it cold anyway...if i set off straight away the car just sounds nasty...really loud...so i always give it about 15secs before setting off

 

[Clark10]

this would be interesting to know...i generally leave mine for a minute or so if driving really hard....if a lil hard about 30secs or so...if normal...about 5 secs.

I've been told you need to let the turbo slow down or somthing, cos if its still going mental and you switch of the car...the oil stops getting to it but the turbo still spins, therfore damaging and shortening the life of the turbo.

but hey, i know naff all about engine and turbos, so that could be a load of crap for all i know!

I didn't think you needed to bother with diesels.

 

[Rosco906]

When its warm it gets a good run needless to say. On mines the 110/100 Bhp whatever bhp it is bla bla its like there's power in 1 and 2. but when u hit 3rd its a god dam animal

 

[andycupra]

search and all will become clear.

but in short:
if you have been driving sedately, (ie not realy using the turbo) then you can parak up and switch off as normal.

if you have been motoring, or perhaps been on the motorway for a period then letting it cool is recommended.

however there are two ways to do this:
1. let it idle when you park up
2. drive the last few miles off boost and effectively do the cool down period on the move.

up to you how you do it.
but the cooling on the move can prove to be a time saver. and some fuel too.
eg:
10 min drive sedately, no cooling time = 10 mins
same journey:
driving hard all way till you park = 7 mins drive +3 mins cooling = 10 mins
driving it hard most of the way, but taking last 2 mins / few miles of the drive easy = 8 mins total.

personaly i think the cooling on the move is more effective and it saves you looking an idiot overtaking all your mates then sitting in the car park while you cool it.

as for diesels... erm i dont know.

 

[Crafoo]

Yep I do the steady drive for the last few minutes of my journey after gunning it on the carriageways on my way home after work, might still leave it 15-20 seconds after that too, depends how much ba****d I have given it. If I have driven steadily from start to finish though (doesn't happen often) I will just switch off straight away.

 

[leon1p]

My car has a hard life.. it only takes me fifteen minutes to get to work so the car only ever gets to optimum temp as i get there. The road is also mostly 60mph limit with a couple miles of 40mph in the middle. At least i have a mile dirt track road to cool down on before parking. Cant say i ever give the car time to cool when i get home but i suppose i have done if i'd been driving with spirit on the long road just before my street.

When i first got the car it was always sooted up on the rear really quick.. but recently theres been none.. I think it doesnt get a chance to choke up.

 

[Nath.]

I just drive mine off boost from the last traffic lights to my driveway, this keeps the neighbors happy as well as the turbo

 

[Triple D]

I had an EGT gauge on my tdi ibiza, and whenever i drove that hard, the EGT were always over 500 degrees, and occasionally up to 700 degrees. Whewn they get this hot i used to leave them to drop to 180 degrees. This would in some cases take upto 5-7 minutes. But id rather my turbo cool down properly before i turn the engine on and save the turbo, as apposed to turn it straight off and it killing it pretty quickly.

 

[Scully]

fit a turbo timer

 

[Ric 2001]

fit a turbo timer

Search and you will find thats not a good idea. Many problems with them and the security of the car.

 

[Scully]

Ive worked on many impreza's with them, no probs at all. and the car is locked, and the imobiliser cut in so hardly any more of a chance getting stolen.

 

[spyke85]

I let mine cool down as I get nearer home, about half a mile through the village which is a 20mph zone.

 

[dozza.13]

I always let mine idle for a minute or so before moving off after starting from cold, and if been driving steadily give it a minute or so to cool down and give it up to 5 mins if really been hammering it! Rather do that n look after turbo than kill it prematurely!!

 

[Blue Monday]

I tend to d te turbo cool down during the last part of the Journey on the whole, but if i have really been iving it some stick i wll idle or 1 or 2 minutes.

As for comments about does it matter for a diesel IMO a turbo is a turbo be it a petrol or derv, and the handbook recomends the cool down too.

 

[rashcupra]

well i would say what i do sounds right but as my turbo has blown i wont

15seconds is no where near enough time for you to then pull away! i start my engine and i wait till its at operating temperature pritty much every time but if in a rush ilstart it and at last make it get to 60ish!

when i drive it hard il take it extra easy for the last two miles of my journey and then il let it idle for about 2-3 mins to let the turbo temperatures naturally drop!

im wanting a key engine starter and turbo timer for my cupra when new 1 is installed so im not pi55ing around for ages!