Date: Sat, 16 Feb 2002 15:40:43 -0000 From: "Phil Born" <philbornnopsam.nojunkfsnet.co.uk> Subject: Re: Turbo and cooling
Isn't that a problem with many Saabs? My 900 will not let you remove the igintion key unless the gear selector is in the 'reverse' position. I have seen electrically powered oil pumps with a timer. These work both when you turn on the ignition (before you start the engine, so the turbo is always lubricated) and when you stop the engine it keeps pumping oil for a short time, so the turbo can spin down to a stop fully lubricated, and it will also help to cool it. As has already been said, many turbo housings are water-cooled now, so this is less of a problem. I haven't bothered with any of this, however. I just let the engine idle whilst I sort myself out, getting my stuff together, then I stop the engine and get out of the car, and go on my merry way. A no-technology solution to the problem! "joe" <someonenopsamere.com> wrote in message news:Kehb8.12403$P21.1163941nopsamread1.prod.itd.earthlink.net... > Absolutely let the turbo spin down in any turbo car. Always let the engin > idle for 30 secs to 2 minutes before turning the enging off to prolong the > life of the turbo. You can purchase a turbo timer for a few hundred dollars > and what this does is allow you to pre-set a length of time that the car > will sit and idle even after you have turned the ignition off, locked up the > car, and walked away. If you ask me they're a waste of money unless your > that goddamn impatient or just too stupid to remember to let it cool down. > ALWAYS ALWAYS ALWAYS ALWAYS! > > > > "Phil Born" <philbornnopsam.nojunkfsnet.co.uk> wrote in message > news:a4k32k$c0q$1nopsamg4.svr.pol.co.uk... > > I think the important thing is to give the turbo a little time to return > to > > idle speed before you stop the engine. This is because the lubricating > oil > > is pumped by the engine - no engine, no oil pressure! > > > > If you've been *really* caning it and stop abruptly, it might need a > minute > > or two to cool down also. Having said that, where I live, the 'fun' roads > > are a little way from my house. So by the time I've slowly driven down a > > few residential streets, it'll have cooled back to its nominal temperature > > anyway. > > > > Hope this helps. > > > > (BTW, I have a '97 900 SE turbo) > > > > > > "Terje Johan Abrahamsen" <terjej_fjerndette_nopsamoot.com> wrote in message > > news:t1go6ugvmaf6hl7dpgtg3d3qa266nvu324nopsamcom... > > > I had a 9000 turbo 1986 model before. There I heard that I had to > > > leave the turbo on for a while after I parked the car, so it had some > > > time to cool of before I turned of the engine. Now, I have a 900 turbo > > > 1998. Do I have to do the same on that one. I heard that the turbos a > > > few years ago would not let you turn the cars of before they were cold > > > enough. Why doesn't my 900 do so? Does it have some other safety ithem > > > installed so I don't have to worry, or should I let it run for a > > > minute or two before turning it of. (After driving a little hard, so > > > the turbo was running obviously) > > > > > > > >
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