O2 sensor and Hooker sidemounts

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Oct 25, 2005 | 09:51 AM

VetteNut72

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From: Tucson AZ

O2 sensor and Hooker sidemounts

For those with this configuration that have had this need, where did you install your oxygen sensor?

Thanks,
Craig

Oct 25, 2005 | 09:53 AM

CGGorman

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From: Smile, it's just the internet.

Passenger side collector. Pointed up at about 10 o'clock, so it just clears the frame. Barely visible from the outside and out of harm's way.

Oct 25, 2005 | 01:14 PM

Bullshark

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From: St. Charles Mo

CI 5 & 8 Veteran

Quote:

Originally Posted by CGGorman

Passenger side collector. Pointed up at about 10 o'clock, so it just clears the frame. Barely visible from the outside and out of harm's way.

That’s is where I mounted mine, but be sure to get a heated wideband O2 sensor for best results. There are people (Holley tech support) who say that mounting any O2 sensor that far from the hot exhaust ports gives erroneous signals, especially at lower rpm's. Wide band minimizes this problem.......I am told

...... makes sense to me

Bullshark

Oct 25, 2005 | 03:08 PM

Z-man

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From: Foxfield CO 1970 Convertible

If you don't have leaks, the WB O2 will work anywhere in the exhaust system including the end of the pipe (as long as there aren't any cat converters installed).

I looked at the Hooker headers but couldn't see any way to hook up the sensor. I'm getting a custom pipe made between headers and the Hooker sidepipes with the bung for the sensor.

Oct 25, 2005 | 04:27 PM

Bullshark

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From: St. Charles Mo

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Quote:

Originally Posted by Z-man

If you don't have leaks, the WB O2 will work anywhere in the exhaust system including the end of the pipe (as long as there aren't any cat converters installed).

Jerry, I don't know the exact details, (haven't done the math) but O2 sensors are calibrated for a certain temp range......correct? Even though they are internally heated they still depend on exhaust to get them to that operating temp range. Wideband O2 sensors have a wider calibrated output signal range (0-5v rather than 0-1v)........something about a delicate balance of maintaining a constant current thru the O2 sensor at a given temp to measure O2 variation. Guess that's why they call it Wideband

Boy this is getting heavy

Anyway, guess you are probably correct if the end of the pipe temp meets that criteria?????? I am just going by what Holley told me and it all sounded logical.

Bullshark

Oct 25, 2005 | 07:22 PM

Z-man

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From: Foxfield CO 1970 Convertible

Quote:

Originally Posted by Bullshark

Even though they are internally heated they still depend on exhaust to get them to that operating temp range.

Bullshark

Generally, the WB sensors are heated to the correct temperature electrically, so they can be placed anywhere in the exhaust stream. I haven't seen any that need exhaust temps to heat them. The company I got my unit from has a clip that holds the sensor in the exhaust outlet behind the car so you can measure A/F ratios among several cars if you want to...
Innovate has some info on their site.
http://www.innovatemotorsports.com/x...cat=250&page=2

Oct 25, 2005 | 10:39 PM

big69

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From: Kearney Nebraska

Quote:

Originally Posted by CGGorman

Passenger side collector. Pointed up at about 10 o'clock, so it just clears the frame. Barely visible from the outside and out of harm's way.

This is were I put mine too but more like the 9:00 position and on the drivers side so that it points even with the underside of the car. I placed it after the collector in the sidepipe rather than the header (just before the spiral baffle). There was some forum talk about jb welding the bung in a few weeks ago and that it might not hold up to the heat. The bung I used had a step on it. I drilled the pipe so it was a snug fit to the step, gooked it with jb weld and pushed it in. JBweld advertises it is good up to 600 degrees. I thought I'd try it and if it didn't work I could always weld it. So far it is holding... about a month.

Oct 26, 2005 | 05:43 AM

1979toy

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From: Wichita, KS

Mine is in the header on the drivers side. I am using a non heated sensor that does not give readings for the first minute after startup but seems like it has a direct connection to the throttle after that. If my gauge is in the yellow I need to change 2 jet sizes to bring it into the green zone. That doesn't sound like too narrow a band to me.