I am north of 140k on my engine with heavy track use and it is still going strong. When the engine goes it goes. Is there a potential for the IMS to fail? Yes. I also know of of these engines failing from all sorts of other issues (D-chunk, spun rod bearings etc) so rather then worry about all the what ifs, and possible problems I choose to stay on top of normal maintenance, enjoy the car and if the engine blows up I will worry about it then.
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