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I do not think that the turbo is the weak point anymore, the rest of the engine is taking more pressure these days with direct injection they have raised the static compression ratio way up in the 12 to 1 range and then add a turbo to force some more in, I'm thinking the rings and rod bearings are the wear items, the turbo is a fairly inexpensive part anyways. The Honda,s and BMW's have gone to small 4's with direct injection and turbo, from what I have read, so far they have been pretty good, BMW with a timing guide failure but that seems to be it.
Will they hit 200k before needing a rebuild? Long off warranty so most manufactures don't care.
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87 930,
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