Turbo warming and cooling
Discussion
So - here's a question I've been pondering. I seem to remember being told (probably by some chap in a pub) that cars with turbos need to be warmed up and cooled down properly, or something 'bad' happens to the things.
I'm not even close to being able to buy an Esprit, but one day I'll have one (no, really). So - if I ever get the cash together to actually buy the S4 or GT3 of my dreams, am I going to have to drive the car differently to the other cars I've had? (I warm the cars up before nailing them, by don't generally cool them down other than on the run back through town of ~1 min.)
Cheers for the answers.
Dan
I'm not even close to being able to buy an Esprit, but one day I'll have one (no, really). So - if I ever get the cash together to actually buy the S4 or GT3 of my dreams, am I going to have to drive the car differently to the other cars I've had? (I warm the cars up before nailing them, by don't generally cool them down other than on the run back through town of ~1 min.)
Cheers for the answers.
Dan
Dan
You should let the turbo cool down before switching the engine off if you have been driving it hard. I used to work with someone with a Celica Turbo who reckoned the turbo would blow up if he didn't let it cool !! What actually happens is that the oil in the turbo will carbonise and so cause excessive wear. The easist thing to do is just drive 'off boost' for teh last couple of miles of your journey and this will let the turbo cool.
As for warming up, it's just the same as any other car. My owner's manual says you should *not* let it warm up before driving from cold, but drive as soon as you start the engine.
Adrian Mugridge - 97GT3
www.adrianmugridge.co.uk
You should let the turbo cool down before switching the engine off if you have been driving it hard. I used to work with someone with a Celica Turbo who reckoned the turbo would blow up if he didn't let it cool !! What actually happens is that the oil in the turbo will carbonise and so cause excessive wear. The easist thing to do is just drive 'off boost' for teh last couple of miles of your journey and this will let the turbo cool.
As for warming up, it's just the same as any other car. My owner's manual says you should *not* let it warm up before driving from cold, but drive as soon as you start the engine.
Adrian Mugridge - 97GT3
www.adrianmugridge.co.uk
dan - as adrian says, a cool down drive of 4 or 5 mins will be fine. Your biggest risks in situations like pulling off the motorway into services. If you've been driving 80ish the turbo will be spinning. If you switch off as soon as you've pulled off the motorway the turbo will still be red hot, but the oil pump won't now be pumping the oil 'round. let it tick over for a few mins and the turbo will cool.
The turbo won't blow up (!) if you don't do this.. but you will be looking at a turbo-rebuild sooner rather than later.
>> Edited by rob.ellis on Friday 11th October 08:45
The turbo won't blow up (!) if you don't do this.. but you will be looking at a turbo-rebuild sooner rather than later.
>> Edited by rob.ellis on Friday 11th October 08:45
My favorite spot to bring in the boost happens to be the last 1/4 mile stint to my house. So, it's probably nice and hot as I pull into my garage. I've been letting it idle for a minute or two, but turn on the AC so that the 3 fans come on to help cool the fluids while the car is not moving, then after a minute, I turn the AC (compressor) off with the cabin air still blowing for 30 seconds to reduce moisture on the AC coils.
Does this make sense?
Does this make sense?
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