Where to mount O2 sensor bolt

[green536@hotmail.com (Chris DeLong)]

>

You can either run it into one tube (not as good as the next suggestion but 
functional) or you can run it at the collector. If you choose to run it at 
the collector then you should use a heated type sensor. Wire the heated 
sensor from your fuel pump relay 87 lead.




>I have a custom made header (4 into 1) that I need to mount my o2 sensor
>bolt onto.  However, I'm not sure where to mount it.  If I mounted it in
>the general location that my stock manifold has then it would only be
>reading one pipe.  The only place to read all the pipes is down near
>where it bolts into the cat, but the only problem here is that I would
>have to cut the wire and extend it so it reaches there.  This is for an
>84 8 valve with a single wire o2 sensor.  First, is it safe to cut the
>wire and extended it (I would think it would be) and second, is it safe
>to have it that close to the cat (I don't see why it wouldn't be).
>
>Another interesting thing about this system is that it has a 5th very
>small pipe running between the 4 big ones with a screw-in hole at the
>end.  I'm guessing this was put there to diagnose the system before
>races so that it wouldn't need an o2 sensor.  However, the hole is
>smaller than the o2 sensor would need so I'm not sure what to do with
>this.  I'm guessing that I'll have it cut and welded shut when I get the
>bolt welded on.  In the picture you can't really see it but on the side
>profile you can barely see it sticking out about half way up the header
>sticking out the top.    Whatever I do, I need to block it some how
>because exhaust is going to come straight up it once its on the car.
>
>
>I can take and post some better pictures later, these were for the TT
>guy so I could order a Cat from him.
>
>And here is the site :o)
>
>http://www.complianceservices.com/car/
>
>




Chris DeLong
ICQ#45030867
Seattle, WA USA
'80 16V 'Rocco ragtop
'91 GLi 2.0 16V
'77 Rabbit 16V
'80 'Vert (parting out!)
'61 17 Window type II
'91 Vanagon
'78 Rabbit
'84 Jetta




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