Megan Racing O2 Extension - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

neuticle · 11-06-2004, 05:59 PM

hey, just wondering if anyone on the forum has an s13 sr20det megan racing o2 extention. and if you do, what o2 sensor do you use? i'm finishing my swap and noticed today that my stock SR o2 sensor is way too small to be used for the bung in my megan racing o2 extention, it looks like it was bunged for an o2 sensor more the size of the KA sensor.

so is there a specific o2 sensor i should be using? or am i missing something here? thanks for your help.

upon further research i found that the redtop and blacktop SR's used different O2 sensors, could it be that the megan racing was bunged for a blacktop O2 sensor? think i would be able to run a blacktop o2 sensor on my redtop sr without a problem?

-usmd-180sx · 11-06-2004, 06:17 PM

Quote:

Originally Posted by neuticle

hey, just wondering if anyone on the forum has an s13 sr20det megan racing o2 extention. and if you do, what o2 sensor do you use? i'm finishing my swap and noticed today that my stock SR o2 sensor is way too small to be used for the bung in my megan racing o2 extention, it looks like it was bunged for an o2 sensor more the size of the KA sensor.

so is there a specific o2 sensor i should be using? or am i missing something here? thanks for your help.

upon further research i found that the redtop and blacktop SR's used different O2 sensors, could it be that the megan racing was bunged for a blacktop O2 sensor? think i would be able to run a blacktop o2 sensor on my redtop sr without a problem?

ya man.. check out this forum.. this topic was covered not too long ago actually.. http://www.zilvia.net/f/showthread.php?t=65359

should help u out.. cuz i just got done with this.. later

PrawjektSilvia · 10-05-2008, 01:26 AM

Ok, I'm having the opposite problem with my KA24DE stock o2 sensor. My stock sensor is too big for the threads on the MR Header...any suggestions for a smaller o2 sensor that would read the same?

Mangudai · 10-05-2008, 01:42 AM

Whats the point of a o2 extension?

PrawjektSilvia · 10-05-2008, 05:03 AM

from what i've read, you can use the o2 extension for the rear sensor (behind the cat) if you have a test pipe so that it takes the sensor out of the direct flow of the exhaust making your computer think that there is a restriction ie that your cat is working...

i don't need an extension just a smaller o2 sensor that would work for an s13...

***S14DB*** · 10-05-2008, 06:20 AM

Quote:

Originally Posted by PrawjektSilvia

from what i've read, you can use the o2 extension for the rear sensor (behind the cat) if you have a test pipe so that it takes the sensor out of the direct flow of the exhaust making your computer think that there is a restriction ie that your cat is working...

i don't need an extension just a smaller o2 sensor that would work for an s13...

NO, The O2 extension is another name for the turbo outlet. Goes from the Turbo to the down pipe(DP). call that cause it has the bung for the O2 sensor.

*fliprayzin240sx* · 10-05-2008, 01:22 PM

You got 2 options, either get the fitting so you can run the stock skinny o2 sensor or go ahead and swap for the fattie o2 sensor.

Mangudai · 10-06-2008, 08:48 AM

Lol thanks for the explanation.

PrawjektSilvia · 10-06-2008, 10:34 PM

Quote:

Originally Posted by S14DB

NO, The O2 extension is another name for the turbo outlet. Goes from the Turbo to the down pipe(DP). call that cause it has the bung for the O2 sensor.

i stand corrected...although what I was talking about is still pretty niffty...lol

btw, I solved my problem of having too small of a bung by getting an o2 sensor off of an old hardbody...

SilviaSR20DET · 10-07-2008, 04:00 PM

couldn't you use that port for a wideband?

RPS13-604 · 10-07-2008, 04:44 PM

im using a 1986 300zx turbo 02 sensor from denso

chituntang · 10-08-2008, 01:31 AM

First, the bung is too close to use a wideband. Second, if you have a megan o2, you would have the screw that came with the kit. That is actually 2 screws, which allows you to either block the narrow band or an adapter for the skinny o2 from redtop sr.

11-06-2004, 05:59 PM	#1
neuticle Join Date: Feb 2003 Location: Salt Lake City, Utah Age: 42 Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	Megan Racing O2 Extension hey, just wondering if anyone on the forum has an s13 sr20det megan racing o2 extention. and if you do, what o2 sensor do you use? i'm finishing my swap and noticed today that my stock SR o2 sensor is way too small to be used for the bung in my megan racing o2 extention, it looks like it was bunged for an o2 sensor more the size of the KA sensor. so is there a specific o2 sensor i should be using? or am i missing something here? thanks for your help. upon further research i found that the redtop and blacktop SR's used different O2 sensors, could it be that the megan racing was bunged for a blacktop O2 sensor? think i would be able to run a blacktop o2 sensor on my redtop sr without a problem?

10-05-2008, 01:22 PM	#7
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	You got 2 options, either get the fitting so you can run the stock skinny o2 sensor or go ahead and swap for the fattie o2 sensor. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

10-05-2008, 01:26 AM	#3
PrawjektSilvia Join Date: Jan 2007 Location: Texas Age: 36 Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	Ok, I'm having the opposite problem with my KA24DE stock o2 sensor. My stock sensor is too big for the threads on the MR Header...any suggestions for a smaller o2 sensor that would read the same?

10-05-2008, 01:42 AM	#4
Mangudai Zilvia Addict Join Date: Jan 2007 Location: South Posts: 656 Trader Rating: (0) Feedback Score: 0 reviews	Whats the point of a o2 extension?

10-05-2008, 05:03 AM	#5
PrawjektSilvia Join Date: Jan 2007 Location: Texas Age: 36 Posts: 18 Trader Rating: (0) Feedback Score: 0 reviews	from what i've read, you can use the o2 extension for the rear sensor (behind the cat) if you have a test pipe so that it takes the sensor out of the direct flow of the exhaust making your computer think that there is a restriction ie that your cat is working... i don't need an extension just a smaller o2 sensor that would work for an s13...

10-06-2008, 08:48 AM	#8
Mangudai Zilvia Addict Join Date: Jan 2007 Location: South Posts: 656 Trader Rating: (0) Feedback Score: 0 reviews	Lol thanks for the explanation.

10-07-2008, 04:00 PM	#10
SilviaSR20DET Zilvia FREAK! Join Date: Mar 2002 Location: Seattle, WA Posts: 1,221 Trader Rating: (9) Feedback Score: 9 reviews	couldn't you use that port for a wideband?

10-07-2008, 04:44 PM	#11
RPS13-604 Zilvia Junkie Join Date: May 2008 Location: Vancouver BC Age: 35 Posts: 386 Trader Rating: (0) Feedback Score: 0 reviews	im using a 1986 300zx turbo 02 sensor from denso

10-08-2008, 01:31 AM	#12
chituntang Zilvia Junkie Join Date: Sep 2005 Location: ATL Age: 38 Posts: 505 Trader Rating: (13) Feedback Score: 13 reviews	First, the bung is too close to use a wideband. Second, if you have a megan o2, you would have the screw that came with the kit. That is actually 2 screws, which allows you to either block the narrow band or an adapter for the skinny o2 from redtop sr.