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Where to mount O2 sensor bolt
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Mount it exactly where the old one went. If it read all 4 mount it at =
the collector. If it read just one make it read off of one of the main =
tubes. Also, if your car didn't come with a heated 02 sensor then don't =
put one on. They are more expensive an you will have to figure out how =
to wire it. Beyond that your cars computer won't look for it anyway =
until the coolant temp sensor tells the computer the motors warm enough =
to do so, which really defeats the whole purpose of having a heated =
sensor.
I tried mounting a 4 into 1 on my 84 and had the sensor at the =
collector. Ran like crap and I couldn't get it adjusted right. =
Switched to a tri-y with the sensor in the original location, easily =
adjusted the mixture and it runs fine. Think of it this way. Your =
sensor reads the amount of oxygen in the exhaust stream. If you mount =
it where you have 4 times the exhaust then it will read 4 times the =
oxygen and think the car is running lean. Keep it where it is.
Alan
----- Original Message -----=20
From: ATS - Patrick Bureau=20
To: Tyler Pease ; List=20
Sent: Sunday, May 05, 2002 10:48 AM
Subject: RE: Where to mount O2 sensor bolt
The question I have... why use a Heated O2 Sensor on a 8v ? what does, =
the heater O2 sensor provide, that the non-heated o2 sensor doesn't?
-----Original Message-----
From: scirocco-l-admin@scirocco.org =
[mailto:scirocco-l-admin@scirocco.org]On Behalf Of Tyler Pease
Sent: Saturday, May 04, 2002 11:10 PM
To: List
Subject: Where to mount O2 sensor bolt
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). =20
=20
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. =20
=20
=20
I can take and post some better pictures later, these were for the =
TT guy so I could order a Cat from him. =20
=20
And here is the site :o)
=20
http://www.complianceservices.com/car/
=20
=20
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<DIV><FONT face=3DArial size=3D2>Mount it exactly where the old one =
went. If=20
it read all 4 mount it at the collector. If it read just one make =
it read=20
off of one of the main tubes. Also, if your car didn't come with a =
heated=20
02 sensor then don't put one on. They are more expensive an you =
will have=20
to figure out how to wire it. Beyond that your cars computer won't =
look=20
for it anyway until the coolant temp sensor tells the computer the =
motors warm=20
enough to do so, which really defeats the whole purpose of having a =
heated=20
sensor.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>I tried mounting a 4 into 1 on my 84 =
and had the=20
sensor at the collector. Ran like crap and I couldn't get it =
adjusted=20
right. Switched to a tri-y with the sensor in the original =
location,=20
easily adjusted the mixture and it runs fine. Think of it this =
way. =20
Your sensor reads the amount of oxygen in the exhaust stream. If =
you mount=20
it where you have 4 times the exhaust then it will read 4 times the =
oxygen and=20
think the car is running lean. Keep it where it is.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Alan</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A title=3Dpbureau@attbi.com href=3D"mailto:pbureau@attbi.com";>ATS - =
Patrick=20
Bureau</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Duberzip@attbi.com=20
href=3D"mailto:uberzip@attbi.com";>Tyler Pease</A> ; <A=20
title=3Dscirocco-l@scirocco.org =
href=3D"mailto:scirocco-l@scirocco.org";>List</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Sunday, May 05, 2002 =
10:48 AM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> RE: Where to mount O2 =
sensor=20
bolt</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=3D713554514-05052002><FONT face=3DArial =
color=3D#0000ff size=3D2>The=20
question I have... why use a Heated O2 Sensor on a 8v ? what does, the =
heater=20
O2 sensor provide, that the non-heated o2 sensor=20
doesn't?</FONT></SPAN></DIV>
<DIV><SPAN class=3D713554514-05052002><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px =
solid; MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> <A=20
=
href=3D"mailto:scirocco-l-admin@scirocco.org";>scirocco-l-admin@scirocco.o=
rg</A>=20
[mailto:scirocco-l-admin@scirocco.org]<B>On Behalf Of </B>Tyler=20
Pease<BR><B>Sent:</B> Saturday, May 04, 2002 11:10 PM<BR><B>To:</B>=20
List<BR><B>Subject:</B> Where to mount O2 sensor =
bolt<BR><BR></FONT></DIV>
<DIV class=3DSection1>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have a custom made =
header (4=20
into 1) that I need to mount my o2 sensor bolt onto.<SPAN=20
style=3D"mso-spacerun: yes"> </SPAN>However, I=92m not sure =
where to mount=20
it.<SPAN style=3D"mso-spacerun: yes"> </SPAN>If I mounted it =
in the=20
general location that my stock manifold has then it would only be =
reading=20
one pipe.<SPAN style=3D"mso-spacerun: yes"> </SPAN>The only =
place to=20
read all the pipes is down near where it bolts into the cat, but the =
only=20
problem here is that I would have to cut the wire and extend it so =
it=20
reaches there. <SPAN style=3D"mso-spacerun: yes"> </SPAN>This =
is for an=20
84 8 valve with a single wire o2 sensor.<SPAN=20
style=3D"mso-spacerun: yes"> </SPAN>First, is it safe to cut =
the wire=20
and extended it (I would think it would be) and second, is it safe =
to have=20
it that close to the cat (I don=92t see why it wouldn=92t be).<SPAN=20
style=3D"mso-spacerun: yes"> </SPAN><SPAN=20
style=3D"mso-spacerun: =
yes"> </SPAN><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">Another interesting =
thing about=20
this system is that it has a 5th very small pipe running between the =
4 big=20
ones with a screw-in hole at the end.<SPAN style=3D"mso-spacerun: =
yes"> =20
</SPAN>I=92m guessing this was put there to diagnose the system =
before races=20
so that it wouldn=92t need an o2 sensor.<SPAN style=3D"mso-spacerun: =
yes"> =20
</SPAN>However, the hole is smaller than the o2 sensor would need so =
I=92m not=20
sure what to do with this.<SPAN style=3D"mso-spacerun: yes"> =
</SPAN>I=92m=20
guessing that I=92ll have it cut and welded shut when I get the bolt =
welded=20
on. <SPAN style=3D"mso-spacerun: yes"> </SPAN>In the picture =
you can=92t=20
really see it but on the side profile you can barely see it sticking =
out=20
about half way up the header sticking out the top.<SPAN=20
style=3D"mso-spacerun: yes"> </SPAN><SPAN=20
style=3D"mso-spacerun: yes"> </SPAN>Whatever I do, I need =
to block=20
it some how because exhaust is going to come straight up it once =
<SPAN=20
class=3DGramE>its</SPAN> on the car.<SPAN style=3D"mso-spacerun: =
yes"> =20
</SPAN><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">I can take and post =
some better=20
pictures later, these were for the TT guy so I could order a Cat =
from=20
him.<SPAN style=3D"mso-spacerun: yes"> =20
</SPAN><o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial">And here is the site=20
:o)<o:p></o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"><A=20
=
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 face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; FONT-FAMILY: =
Arial"><o:p> </o:p></SPAN></FONT></P></DIV></BLOCKQUOTE></BLOCKQUOTE=
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