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marcesq's Avatar
 
Join Date: Aug 2001
Location: Herndon, VA
Posts: 1,945
Garage
Torque Tube Rebuild Kit

4 ceramic hybrid bearings and delrin collars for 300.00 shipped to US.

OE C4 clearance steel bearings are available as well if preferred. PM for pricing.

Please do not buy any kit with the C3 bearing or buy a bearing replacement that is C3 clearance as they will fail far sooner than you would like.

Here is a picture of the front and rear of the new bearing with collar installed.



The price is more expensive than other kits out there, but most people (like the guy on e-bay) are selling C3 clearance bearing (4 to 6 dollars each) when Porsche originally specified C4 clearance bearings. The C4 bearings are slightly less expensive than the Ceramic Hybrid.

The Ceramic Hybrid bearings are double shielded with steel (not sealed with plastic or rubber). They do not suffer from heat exposure at all and do not expand like the steel ball bearings so they last much longer (bearing vendor says 3x longer but I have no way of verifying that).

You will also see aluminum collars. I don't think that aluminum is a good idea for the collars. If it had been Porsche would have used it rather than coating a steel collar with a plastic material. It is clear that Porsche did not want metal to metal contact between the non hardened shaft and hardened bearing cases. I am guessing that the plastic provides a small amount of shock absorption with no chance of becoming rusted or fused to the drive shaft.

If you have any questions, please send post them or send me a PM.

Thank you.

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Old 04-12-2009, 01:28 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
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Do you sell the bushings as a separate item---I'm in the bearing biz so I have the bearings.

ron.henderson@kaman.com

Old 05-18-2009, 12:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
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