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Where to mount O2 sensor bolt



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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/
 
 

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<div class=3DSection1>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I have a custom made header (4 into 1) that I need to =
mount my
o2 sensor bolt onto.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>However, I&#8217;m
not sure where to mount it.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>If I
mounted it in the general location that my stock manifold has then it =
would
only be reading one pipe.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>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. <span style=3D'mso-spacerun:yes'>&nbsp;</span>This is for =
an 84 8
valve with a single wire o2 sensor.<span =
style=3D'mso-spacerun:yes'>&nbsp;
</span>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&#8217;t
see why it wouldn&#8217;t be).<span style=3D'mso-spacerun:yes'>&nbsp; =
</span><span
style=3D'mso-spacerun:yes'>&nbsp;</span><o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>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.<span style=3D'mso-spacerun:yes'>&nbsp; </span>I&#8217;m guessing =
this was
put there to diagnose the system before races so that it wouldn&#8217;t =
need an
o2 sensor.<span style=3D'mso-spacerun:yes'>&nbsp; </span>However, the =
hole is
smaller than the o2 sensor would need so I&#8217;m not sure what to do =
with
this.<span style=3D'mso-spacerun:yes'>&nbsp; </span>I&#8217;m guessing =
that I&#8217;ll
have it cut and welded shut when I get the bolt welded on. <span
style=3D'mso-spacerun:yes'>&nbsp;</span>In the picture you can&#8217;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.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span><span
style=3D'mso-spacerun:yes'>&nbsp;&nbsp;</span>Whatever I do, I need to =
block it
some how because exhaust is going to come straight up it once <span
class=3DGramE>its</span> on the car.<span =
style=3D'mso-spacerun:yes'>&nbsp; </span><o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I can take and post some better pictures later, these =
were
for the TT guy so I could order a Cat from him.<span
style=3D'mso-spacerun:yes'>&nbsp; </span><o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>And here is the site :o)<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><a =
href=3D"http://www.complianceservices.com/car/";>http://www.complianceserv=
ices.com/car/</a><o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

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