Garrett GT17 Compressor Vane Fragments - Saab 9-5 Bulletin Board - Saabnet.com
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GARRETT designed the GT17 turbocharger to be capable of quick spool by means of the lightweight rotating components such as the turbine, and compressor wheels. Unfortunately, this typically diminishes longevity to a 100K mileage average. Damages may occur at any rotating components, as you described, due to the missing material away from the aluminum compressor wheel will effect balance which causes a more rapid decay of the journal bearing, and thrust components.
Due to the quality of the SAAB engine designs of this era, most find that any small aluminum compressor wheel debris may have safely passed through the engine then turbocharger turbine wheel, and into the exhaust system. Large debris may be find their way into the intercooler, and could be flushed, if these are of any concern.
Thanks again for your post!
Gary K. at SWEDISH DYNAMICS, INC.
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