C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

where to place the 02 censor..

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Old Dec 8, 2004 | 01:17 PM
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Default where to place the 02 censor..

..on my non-coated hooker headers? Im not using a heated 02 right now.

cheers..
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Old Dec 8, 2004 | 02:50 PM
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I would put it in the collector, similar to the OEM distance from the engine.
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Old Dec 8, 2004 | 03:09 PM
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I used to have pictures for you until photohost.org decided to fall off the earth


Put them 5in up in the collector on the outside for both. Easy to wire up and get to. Nathan Plemmons has pics he can show you.
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Old Dec 8, 2004 | 04:11 PM
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do i need a heated O2 for that?
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Old Dec 8, 2004 | 04:26 PM
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Originally Posted by devilfish
do i need a heated O2 for that?
No matter what your gonna need a heated O2 in Hookers or any other Long Tube header if you ask me. My 92 sure needed them.
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Old Dec 8, 2004 | 04:35 PM
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you need ceramic coated!
$188 for the set!
let me know!
3 yr guarentee and lifetime rust warranty.



Summit sells collectors that have 02 bungs in them! I'd recomend that its cheap and the easiest thing to do! welding those things in is hard and they dont work as well.
thanks
your friend
Sean
Slimshaby@mindspring.com
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Old Dec 8, 2004 | 05:40 PM
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Originally Posted by redbullapril23
you need ceramic coated!
$188 for the set!
let me know!
3 yr guarentee and lifetime rust warranty.]
Is that price for headers or O2 sensors? If that's headers I would be VERY interested in placing an order.
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Old Dec 8, 2004 | 09:14 PM
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For a 91?
6 speed?
Uncoated headers?

A heated O2 on the passenger side collector. Much more room over there. But you have to make extensions for the 3 wires.
-key on current (can tap into the window wiper motor harness or fuel pump relay wire)
-ground
-sensor signal

Coat those headers with ceramic!
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Old Dec 8, 2004 | 10:17 PM
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That's how much it cost to coat Long tube headers.
its a steal!
let me know
slimshaby@mindspring.com
thanks alot your friend
Sean
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Old Dec 9, 2004 | 04:55 AM
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Originally Posted by 89 Paul in Cal
For a 91?
6 speed?
Uncoated headers?

A heated O2 on the passenger side collector. Much more room over there. But you have to make extensions for the 3 wires.
-key on current (can tap into the window wiper motor harness or fuel pump relay wire)
-ground
-sensor signal

Coat those headers with ceramic!
If I lived in US I sure would coat them. Now I just going to use them as they are. THey should hold atleast 2-3 years without coating

Could you give me som exampels on heated 02 to use?

thanks for your help..
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Old Dec 9, 2004 | 10:23 AM
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Originally Posted by devilfish
If I lived in US I sure would coat them. Now I just going to use them as they are. THey should hold atleast 2-3 years without coating

Could you give me som exampels on heated 02 to use?

thanks for your help..
Well Nathan knows the part numbers but they are just a regular ol 3 wire O2 and they are not that hard to wire up. Since you will be running your headers uncoated they might actually get hot enough after a while. You may try to run w/o the heated O2's. It won't hurt anything but you will know whether or not you need em cause your car will run like crap.

What is the exact year of the car?
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Old Dec 9, 2004 | 03:41 PM
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Originally Posted by VictorRussell'92
Well Nathan knows the part numbers but they are just a regular ol 3 wire O2 and they are not that hard to wire up. Since you will be running your headers uncoated they might actually get hot enough after a while. You may try to run w/o the heated O2's. It won't hurt anything but you will know whether or not you need em cause your car will run like crap.

What is the exact year of the car?
1991
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Old Dec 9, 2004 | 03:49 PM
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https://www.corvetteforum.com/techti...D=93&TopicID=2


You can tell if your ECM goes into closed loop (since you headers are not coated, maybe they won't keep enough heat inside the tubes like a coated ones would) after it sees the sensor saying it's up to operating temperature.
On my 89 Mass air flow 165 ECM I can see when it goes closed loop with the ALDL and the "SES" light on the dash and how fast it blinks. I don't know if 91 is speed density or what computer it has or if you can check the same way. Someone can chime in and verify this.
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Old Dec 9, 2004 | 04:12 PM
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Originally Posted by 89 Paul in Cal
https://www.corvetteforum.com/techti...D=93&TopicID=2


You can tell if your ECM goes into closed loop (since you headers are not coated, maybe they won't keep enough heat inside the tubes like a coated ones would) after it sees the sensor saying it's up to operating temperature.
On my 89 Mass air flow 165 ECM I can see when it goes closed loop with the ALDL and the "SES" light on the dash and how fast it blinks. I don't know if 91 is speed density or what computer it has or if you can check the same way. Someone can chime in and verify this.
yeah i will hook up my tts datamaster laptop as well to verify closed loop. I just dont whant it to take forever to get in to closed loop due to to cold o2 censor.
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