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Has the flywheel been checked? The dual mass flywheel can get out of round somehow and cause the vibration between ~28K-32K rpm, mostly when the engine is coming down. It's something you may want to look into so the new crank is not being vibrated back to its' previous condition.
Btw, take it to a local Porsche only specialist and pay him an hour's labor to look everything over in the drive train to engine area. The dealers will wear you out with the "we don't feel anything" deal so you eventually give up. If you can take something in writing from a Porsche specialist with many years experience it will help them "feel the problem".
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1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
Last edited by deliriousga; 02-22-2006 at 05:11 AM.
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