Sealing extra 02 bunge

[waynieZ]

I have a couple of 02 bungs in my headers that won't be used.(Not enough room for sensors) When I put the plugs in do I put high temp RTV on the plugs to seal them or something else or nothing? Copper crush washers?

Thanks

[Che70velle]

Wayne, I went with Mast M90 electronics that only required one O2. My other header, I used an allen head pipe plug and ran it in tite, with nothing on it. I thought about sealant, but wasn't sure anything would hold up very long with header heat. I have no issues at all, although if I needed it to come back out, I'd probably be in trouble.

[novahollic]

Put some copper anti seize on it. It will hold up to the heat, but still allow it to come off in the future.

[randy]

I used the aluminum gasket silicon thay came with my headers

[andrewb70]

If you don't have a proper plug, the large thread spark plugs work just as well.

Andrew

[CJD Automotive]

I would use a copper crush washer from a banjo fitting. I've used the plugs before and always use a sealing washer, especially if it's upstream of the O2 your using.

If you can't find one, you could grind down the threads on a spark plug and slip the crush washer off. It's the same size as the plug.