O2 sensor mounting

[eric schumacher]

I use Fiat rear axle nuts for O2 fittings.

At 07:55 PM 6/4/97 +0000, you wrote:
>O2 sensors are 18 X 1.5 mm thread and use a crush washer like some spark 
>plugs. You can buy a weld-on boss from Jeg's or Summit but it would have 
>to go on the exhaust pipe itself and not the cast iron manifold.
>
>Mike M.
>ShadeTree Racing
>
>On Wed, 4 Jun 1997, Ron Madurski wrote:
>
>> :
>> :
>> :I have an exhaust manifold that does not have a tapped hole
>> :for an O2 sensor but their is what looks to be like a spot
>> :that is tapped out when this manifold was used on FI type
>> :engines.  
>> :
>> :Does anyone know what is involved in tapping an
>> :O2 sensor hole?  I think I read somewhere that you can't just drill
>> :it and tap it with a normal tap because of sealing issues
>> :between the sensor and the manifold once the assembly gets 
>> :up to temp.  Has anyone done anything like this?
>> :
>> 
>> I got a boss for the O2 sensor from a speed shop and had it welded in to
>> my existing header.
>> 
>> :Any and all comments welcome!
>> :TIA
>> :
>> :Greg Woods
>> :gwoods at symtx.com
>> :
>> :
>> 
>> 
>> -- 
>> Ron Madurski      
>> rmadursk at galaxy.galstar.com
>> 
>