986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - If failure is due to IMSB, what's salvageable from the engine?

Steve Tinker · 01-05-2016, 10:09 PM

Even if the IMS bearing is showing early signs of wear, metal particles (we would call it dust if the particles were air born) is already circulating in the oil system - that means potential damage to every moving part that is lubricated by the oil. That means everything from main & big end bearings, crank, camshafts, oil pumps (3 off), pistons, hydraulic lifters, etc etc.

Use the search function "collateral damage", and take note of Jake Raby's very accurate comments on the various stages of IMS bearing failure.

Several hours informative reading at bedtime..... guaranteed to keep you awake if you have the single row bearing in your M96 engine car!!

01-05-2016, 10:09 PM	#2
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	Even if the IMS bearing is showing early signs of wear, metal particles (we would call it dust if the particles were air born) is already circulating in the oil system - that means potential damage to every moving part that is lubricated by the oil. That means everything from main & big end bearings, crank, camshafts, oil pumps (3 off), pistons, hydraulic lifters, etc etc. Use the search function "collateral damage", and take note of Jake Raby's very accurate comments on the various stages of IMS bearing failure. Several hours informative reading at bedtime..... guaranteed to keep you awake if you have the single row bearing in your M96 engine car!! __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.