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billybaloneey · 08-31-2009

While searching for a substitute, before I began this thread, I did come across a very think Scotchbrite pad. It was in the form of a 2' in diameter stripping pad used on heavy duty floor buffers...the pad is designed to strip wax from floors. The pad is about 3/4" - 1" in thickness. The Scotchbrite material is a bit more dense than the original filter foam, but it's close. I think the suggested copper scrubbing pad is closer in material density/weave.

As far as long term usage, I think the Scotchbrite pad might be a safer choice. If it deteriorates or breaks down...and drops down from the cam cover onto the head and gets into the engine through the oil, the engine would have a better chance of digesting a strand of Scotchbrite material as opposed to a strand of copper. Although the chances are probably slim a strand of copper would break off.

In either case, I've not been able to find...in the service manual...a recommended servicing/replacement frequency for changing these filters, so it must not be a serviceable item. I can't imagine GM expecting anyone to have the cam covers removed on a regular basis to change those two tiny filters.

For anyone trying the Scotchbrite replacement option...because of the materials density, I think the occasional quick spray/shot of de-greasing chemical, where the tube enters the cam cover, it might be a good idea to rid the material of any oil build up. I'm just thinking out loud and trying to think logically, I'm not speaking from experience.

08-31-2009	#13
billybaloneey Join Date: May 2008 Location: Mauriceville, Texas Posts: 179	Re: Cam Cover Foam Filters While searching for a substitute, before I began this thread, I did come across a very think Scotchbrite pad. It was in the form of a 2' in diameter stripping pad used on heavy duty floor buffers...the pad is designed to strip wax from floors. The pad is about 3/4" - 1" in thickness. The Scotchbrite material is a bit more dense than the original filter foam, but it's close. I think the suggested copper scrubbing pad is closer in material density/weave. As far as long term usage, I think the Scotchbrite pad might be a safer choice. If it deteriorates or breaks down...and drops down from the cam cover onto the head and gets into the engine through the oil, the engine would have a better chance of digesting a strand of Scotchbrite material as opposed to a strand of copper. Although the chances are probably slim a strand of copper would break off. In either case, I've not been able to find...in the service manual...a recommended servicing/replacement frequency for changing these filters, so it must not be a serviceable item. I can't imagine GM expecting anyone to have the cam covers removed on a regular basis to change those two tiny filters. For anyone trying the Scotchbrite replacement option...because of the materials density, I think the occasional quick spray/shot of de-greasing chemical, where the tube enters the cam cover, it might be a good idea to rid the material of any oil build up. I'm just thinking out loud and trying to think logically, I'm not speaking from experience.