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Re: Turbo replaced - Any cause/reason???
Posted by patprice (more from patprice) on Tue, 29 Jun 2004 01:34:43
In Reply to: Turbo replaced - Any cause/reason???, CA Dude, Mon, 28 Jun 2004 08:12:56
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From what I have seen when tearing down one of these turbos is that in the neverending quest for faster spooling they shrunk the size of the bearings and in particular the thrust bearing. Where Saab specifically has the problem is that these engines are forming sand like coke particles which tend to erode the thrust bearing. When the thrust bearing goes the shaft walks back and forth which keeps the seals from developing their proper "set" and they finally quit sealing and leak oil into the intake stream(usually) wjich is curious since traditionally the problem has been on the exhaust side of the turbo.
What can you do to prevent it?
Change your oil, If you put clean water in a frypan and boil it off you have a clean pan left if you put dirty water in a frypan and boil it off you get dirt.
Use synthetic oil which has a higher "boiling point".
Have the breather mod done(unless you have an 04) this will help to keep the coke from forming and will help to keep your engine alive.
posted by 172.136.23...
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