Date: 28 Feb 2002 10:36:32 -0800 From: romand1979nopsamail.com (Roman) Subject: Re: Turbo and cooling
The problem is NOT of intelligence when it comes to Turbos siezing. The problem is with inadiquate cooling. It seems to me that it IS very difficult to assess how long to keep the car at idle for proper cooling. My idea was to rig up a separate water pump just for the turbo. The pump would be electric not mechanicly driven! With this set-up the car would not have to be running in order to get additional cooling (similar to a cooling FAN). I have an old 9000 ('86) which I got with a very siezed turbo, I now have a replacemnt turbo from an 87 with both oil and coolant feeds. I am really considering taking of my useless Ac compressor and using the housing to fit an addition water pump. -roman "Rudolph Hucker" <aaroncupnopsamAMhotmail.com> wrote in message news:<a4olcs$o3s$1nopsams.btinternet.com>... > Turbo Timers may actually cause you to break the law, as they allow you to > lock the car and walk away with the engine still running (Illegal in the UK) > > Cheers > > RP > > "Phil Born" <philbornnopsam.nojunkfsnet.co.uk> wrote in message > news:a4lue0$ppn$1nopsamg3.svr.pol.co.uk... > > Isn't that a problem with many Saabs? My 900 will not let you remove the > > igintion key unless the gear selector is in the 'reverse' position. > > > > I have seen electrically powered oil pumps with a timer. These work both > > when you turn on the ignition (before you start the engine, so the turbo > is > > always lubricated) and when you stop the engine it keeps pumping oil for a > > short time, so the turbo can spin down to a stop fully lubricated, and it > > will also help to cool it. > > > > As has already been said, many turbo housings are water-cooled now, so > this > > is less of a problem. > > > > I haven't bothered with any of this, however. I just let the engine idle > > whilst I sort myself out, getting my stuff together, then I stop the > engine > > and get out of the car, and go on my merry way. A no-technology solution > to > > the problem! > > > > "joe" <someonenopsamere.com> wrote in message > > news:Kehb8.12403$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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