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Old 09-28-2016, 03:05 PM   #20
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
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Quote:
Originally Posted by Smallblock454 View Post
Hello JFP in PA,

this wobbling problem is causal caused by bad engine case adjustment (hope that is the right term). In general these engines were replaced by Porsche completely. Well known problem.
I'm sorry, but you are not correct. On shafts with this issue, if placed in fixtures outside the engine and then turned while a dial indicator tracks them at the bearing end, the run out can be substantial, to the tune of over 0.010 inches. This is in the shaft itself, with nothing else involved. Over time, the repeated wobble in an assembled engine can reek havoc on the IMS bearing.
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Last edited by JFP in PA; 09-28-2016 at 03:07 PM.
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