986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - fitting an off the shelf SKF bearing for IMS

Steve Tinker · 04-13-2015, 03:04 PM

1) A C3 bearing is the "standard" clearance. I would clarify with the bearing manufacturer what he would recommend with the engine operating @ 100 deg C + under normal operating conditions, but I think that a C3 is only good for up to +/- 75 deg C.
2) Why do you want to repack the bearing - they come from the factory with enough grease for normal operation. Normally. a deep groove bearing requires less the 30% grease fill, any more and it will overheat and expel the grease out of the seals.
3) Read up on just removing the seals and let the oil "splash" system lubricate the bearing.

04-13-2015, 03:04 PM	#2
Steve Tinker Registered User Join Date: Dec 2008 Location: Queensland, Australia Posts: 1,522	1) A C3 bearing is the "standard" clearance. I would clarify with the bearing manufacturer what he would recommend with the engine operating @ 100 deg C + under normal operating conditions, but I think that a C3 is only good for up to +/- 75 deg C. 2) Why do you want to repack the bearing - they come from the factory with enough grease for normal operation. Normally. a deep groove bearing requires less the 30% grease fill, any more and it will overheat and expel the grease out of the seals. 3) Read up on just removing the seals and let the oil "splash" system lubricate the bearing. __________________ 2001 Boxster S (triple black). Sleeping easier with LN Engineering/Flat 6 IMS upgrade, low temp thermostat & underspeed pulley. 2001 MV Agusta F4.