Should I use anti- sea or teflon tape or any other sugestions?

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87 Z28 305 TPI, Auto, Gutted air boxes, K & N fillters, Dyno Max 3" cat back.

 

New,

DON'T use teflon tape, or any other sealing compound that might electrically insulate the sensor from the exhaust. A new sensor generally comes out of the box with a small amount of anti-seize compound applied. There are some important things to understand about this.

First, the compound contains metal particles, so it is electrically conductive. The metal particles will act as a dry lubricant long after tha carrier oil has burned away, making it possible to remove the part later.

Second, keep the compound off the sensor tip, unless you like buying replacement sensors. The carrier oil and metal particles can contaminate the zirconia sensing element, rendering the sensor uselss.

Third, the replacement sensors generally never have enough compound applied to be adequate. Then again, I like to load anti seize on every fastener I install. I coat spark plugs so that they don't fuse to aluminum heads. Exhaust work would be a serious PITA without a good application of compound. Chassis components always disassemble better with it. I like to use it on the rear faces of aluminum wheels to reduce cathodic etching that most people experience. I coat my side terminal battery connections to assure contact and prevent oxidation. I apply it to body and engine ground points and power nodes to aid conductivity and eliminate corrosion. My wife thinks I sneak some of it onto my pancakes when she's not looking.

My method would be to use the old sensor with anti seize compond liberally applied to work the compound into the threads in the exhaust. Remove the old sensor and wipe away any excess compound, then install the new sensor. The compound does not seal the sensor. There is a gasket attached to the base of the sensor for that purpose. Do not over-torque the sensor, since you can distort the element from excessive force, rendering the new sensor inaccurate.

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Later,
Vader
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"Make Me Bad"
Adobe Acrobat Reader 4.0

[This message has been edited by Vader (edited September 22, 2000).]

 

Thanks Vader, I forgot the sencor grounds its self.

 

Hi guy,

Uh, I'm sorry man, but I kept reading between the lines and..........

And hey ! I quoted and paraphrased as necessary to keep this brief. You know, seeins' how this is an election year, I just figured I'd use the same professional editing techniques that our outstanding journalists seem to enjoy using. HAAARRRRUMPH !!!

Uh, but seriously, oh master of darkness, thanks for the tip, I'm changing ye ol O2 sensor Sat. morning.

Your pal,

BOR

 

Box,

You might just be my write-in. I would like to be considered for the position of Chairman of Pooterball Research (otherwise known as Secretary ot the "interior").

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Later,
Vader
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"Make Me Bad"
Adobe Acrobat Reader 4.0