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Old 12-21-2011, 10:24 AM   #1
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Vario cam tensioner pad

Everytime I change my oil I see little bits of brown plastic in the filter element. This looks like Vario cam tensioner pad material. Does track driving cause more aggressive wear of this material/component? How long do I have before I loose proper actuation and phasing of the cam shafts? What will the tell tail signs.....perhaps minimal power change through 4000 rpm?

Has anyone had to replace these things?
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Old 12-21-2011, 10:38 AM   #2
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I see the same thing, although the amount is really very minimal. Many others see the same thing. I'm not really worried about it.
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Old 12-21-2011, 12:46 PM   #3
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The best thing you can do to minimize wear to the pads on the Vario-Cam engines (2000-2002), besides the obvious maintaining oil quality, is to avoid cruising in the changeover rpm range of 2200rpm- 2500rpm





They usually wear this much after 40K to 80K miles & cause the changeover to be less smooth enough to see a power drop on a dyno chart @ that rpm. Eventually the pad can deteriate enough to crack & break causing excessive camshaft timing deviation & Eventually chains coming loose. So it's a good idea to install the new more wear resistant wear pads before 80K miles.
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Old 12-21-2011, 01:05 PM   #4
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Looking at the durametric, on my car the big changeover is in the 3500+ range.
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Old 12-21-2011, 01:10 PM   #5
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Excellent! I have always avoided stop and go traffic as I had feeling it was loading and loading chains....now I know

I actually thought there was a phasing at 4K.

So there are more robust pads that are available...this good news...are they 996 part number revisions? When is someone going to design "metallic" roller pads??

I will have to have to have the facilities and know how to drop the engine by then. Once I have that can this work be done by a non expert?
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Old 12-21-2011, 02:07 PM   #6
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Quote:
Originally Posted by jaykay View Post
Excellent! I have always avoided stop and go traffic as I had feeling it was loading and loading chains....now I know

I actually thought there was a phasing at 4K.

So there are more robust pads that are available...this good news...are they 996 part number revisions? When is someone going to design "metallic" roller pads??

I will have to have to have the facilities and know how to drop the engine by then. Once I have that can this work be done by a non expert?
Vario-Cam is a single timing change @ 2200-2500 rpm & it really helps from 4000rpm up. There is a update kit containing 2 pads & 1 o-ring to do 1 Vario-Cam tensioner so you need 2 kits. The wear pad has to be softer than the chains so that the pads wear & not the chain. The cams have to be removed & re-timed so you need special tools
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Old 12-22-2011, 06:10 AM   #7
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Thanks for the information...I have heard that cam timing is pretty trucky
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Old 12-22-2011, 09:24 AM   #8
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Here is the DIY for replacing the cam tensioner: Pelican Technical Article: Boxster Camshaft Upgrade / Chain Tensioner Replacement - 986 / 987

Looks somewhat difficult (to me) but I'm sure that some of the guys on this site would have no problem doing it.
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