s/c bearings
Senior Member
True Car Nut
Joined: Jul 2003
Posts: 6,127
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From: Westerville, Ohio 2000 Black SSEi

There are companies that make ceramics SC bearings, but dont bother getting them. They did nothing for my HP (although they may extend the life of snout?).
I guess the ceramics tend to be better for Trubos which spin at much higher speeds.
I guess the ceramics tend to be better for Trubos which spin at much higher speeds.
Dealers typically don't know **** about superchargers. Believe it. Are you getting any noise at idle, or any other engine speed? Does the supercharger produce boost? If so, how much? Does the SC spin freely by hand on the pulley with the belt off, with no backlash?
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Posts like a Turbo
Joined: Sep 2003
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From: Halifax Nova Scotia ASE Master Service Tech

The first thing the dealer will want to do is replace the unit for $3000 CAD. 99 percent of SC noise is the coupler. If there is backlash (looseness) of the pulley the coupler is worn (about $30 + oil and stuff). It is difficult to check the bearings with a loose coupler but easy when you take it apart to replace the coupler. If there is oil left in the SC, you probably don't have a problem with the bearings. These SC units are incredibly durable!! When I changed by coupler I had very little oil left in the unit itself and the bearings are still fine. With the unit apart you can spin the gear that the coupler attached to and check it for smooth movement.
FYI - you can get the bearings and seals at www.applied.com. The bearings for the nosedrive are 6203.C3 and 6204.C3 (both open/unsealed bearings) and the seal is CR7965. It definately helps to have access to a press and shop tools to get the old things off and new on. Also, to get the seal around the corner of the machined surface w/o damaging the seal it helps to have a seal protector, or some way to make sure the seal is ok.
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