need info RB26

[shaune]

hi guys,

 

i bought a half cut engine RB which needs the O2 replacement sensors.
dont have the chassis # but only have the engine #

RB26066718A

 

any idea what is the year make & if its from a normal GTR chassis?

 

Thanks in advance all...

 

BR,

 

Shaune

Edited September 23, 2019 by shaune
double info

[Duncan]

you'd match the o2 sensor to your ecu ( or chassis if original), not engine, it that helps.

[shaune]

hi Duncan, yes the problem is the model of O2 sensor... 

gtr32/33/34 is different.

its not a 32 rb26.

possible its 33 or 34 coz the CAS is the new type. Amayama requires chassis # to confirm which model of the sensors. I dont have that, only have engine #.

[shaune]

[Duncan]

sorry, my point was that the o2 sensors you need match the ECU, not the engine. I may not be asking enough to understand the specifics, but if you have put the engine in a something, and need new o2 sensors, the model of engine doesn't matter.

It's the ECU that needs matching sensors. So, if you are putting it in something original (pic suggests you put the half cut engine in an r32) and have the original ECU, that is the type of o2 sensor you need. If you have put the engine in something else, you need to identify the ECU's model, not the engine's.

FWIW the fuel rail is 33/34 not 32 style, and as you said the CAS is not 32 style either

[GTSBoy]

And also, FWIW, any narrow band O2 sensor that has similar enough characteristics will work. I put one from an EL falcon (or somesuch similar shitbox) onto my R32 when it died a million years ago. These are not rocket science.

[shaune]

1 hour ago, Duncan said:

sorry, my point was that the o2 sensors you need match the ECU, not the engine. I may not be asking enough to understand the specifics, but if you have put the engine in a something, and need new o2 sensors, the model of engine doesn't matter.

It's the ECU that needs matching sensors. So, if you are putting it in something original (pic suggests you put the half cut engine in an r32) and have the original ECU, that is the type of o2 sensor you need. If you have put the engine in something else, you need to identify the ECU's model, not the engine's.

FWIW the fuel rail is 33/34 not 32 style, and as you said the CAS is not 32 style either

its running on stock ecu, problem is i have spare o2 sensor from my 32 rb26 engine (tried to swap it to see whats the difference) then only found out  but the thread & size is different.

normally would remove this & replace it with wideband sensors if using aftermarket ecu.

but since im running this stock, just need to buy the sensor coz the existing one is faulty.

dont have a r33 or r34 sample to compare.

like i said, i wanna order it but they asking me which year or chassis # before Amayama give me a price.

so back to my original question, anyone got any link to find out engine # year make?

[GTSBoy]

Well, you could look at it with all the obvious clues......

It's not an R32 engine, and the dump pipe won't accept an R32 O2 sensor. So, it is therefore either an R33 or R34 unit. So, you could just ask the parts supplier what thread is on each of those (likely to be the same for both) and just go from there.

But now you bump up against the wiring problem. I have no idea about these specifically, but are the R32s 3 wire and the later ones 4 wire? Because you can't just go chuck a 4 wire onto a 3-wire loom. You're back to what Duncan said about matching the sensor to the ECU.

If you have spare R32 dump pipes, your best bet might be to fit those. Then they will accept R32 sensors and the planets will align again.

[KiwiRS4T]

Ring or email Kudos

http://www.kudosmotorsports.com/catalog/lambda-oxygen-sensor-front-suit-nissan-skyline-rb26dett-p-185.html

They have all the O2 sensors. Tell them your R32 sensor was too small in diameter. The front and rear sensors are different so be sure you tell them what you need. You should be able to sort it out over the phone.

[BK]

R32 GTR = 12mm thread

R33 / R34 GTR = 18mm thread like most wideband sensors (NTK, Bosch)

That's why a lot of dump pipes like HKS come with the reducers to suit all models of sensor, as I have a set of reducers that came with my HKS dumps that I didn't use as they were fitted to my 33 and weren't required. All are 3 wire, all are 0 -1v, but front sensor has square 4 pin plug (still only 3 wire) and rear has rectangular 3 pin plug.

That said I think they do bugger all in the grand scheme of things, and are probably only worth retaining on stock ECUs.

On a side note I believe it is nearly impossible to decode engine numbers with year and model makes, as this info is not contained within Nissan FAST. This means even Nissan can't tell you. The only thing I've noticed is RB26 blocks that were fitted from factory all seem to end with an A.

[shaune]

12 hours ago, KiwiRS4T said:

Ring or email Kudos

http://www.kudosmotorsports.com/catalog/lambda-oxygen-sensor-front-suit-nissan-skyline-rb26dett-p-185.html

They have all the O2 sensors. Tell them your R32 sensor was too small in diameter. The front and rear sensors are different so be sure you tell them what you need. You should be able to sort it out over the phone.

TQ!

[shaune]

12 minutes ago, BK said:

R32 GTR = 12mm thread

R33 / R34 GTR = 18mm thread like most wideband sensors (NTK, Bosch)

That's why a lot of dump pipes like HKS come with the reducers to suit all models of sensor, as I have a set of reducers that came with my HKS dumps that I didn't use as they were fitted to my 33 and weren't required. All are 3 wire, all are 0 -1v, but front sensor has square 4 pin plug (still only 3 wire) and rear has rectangular 3 pin plug.

That said I think they do bugger all in the grand scheme of things, and are probably only worth retaining on stock ECUs.

On a side note I believe it is nearly impossible to decode engine numbers with year and model makes, as this info is not contained within Nissan FAST. This means even Nissan can't tell you. The only thing I've noticed is RB26 blocks that were fitted from factory all seem to end with an A.

TQ! good info

[shaune]

checked with amayama, yes same model for 33/34 will get it.

[Duncan]

33/34 sensors may fit physically in the dumps and have the right connectors (1x3 pin, 1x4 pin) but they won't necessarily behave properly with the 32 ECU as they may be a different chemistry (titania vs zirconia), I'm not sure if they are. The fact that 32 and 33 ECU is interchangeable probably means they will be OK

[BK]

Yes the R32 GTR ECU most certainly wants the 32 Titania version. There is a different setting in the Power FC to change in the ETC menu for the O2 sensor reg setting depending on R32 Titania or R33 Zirconia sensors. From Apexi:

There is a difference in the O2 Sensor for these vehicles. (With or without internal register)

After tuning, please check () "O2 Sensor REGISTER" for BNR32, and NOT for BCNR33.

So off (+ sign) for R33 O2 sensors. I have my BCNR33 set like this in my Apexi Power FC.

I don't know how the Haltech Elite deals with it as I have no narrowband O2 sensors fitted on my 32 (use CAN wideband) and have them turned off in the ESP software. Nistune is also onto this, here's what they have to say:

NIStune Using R32 GTR ECU on R33 GTR - Updated

The R32 ECU is a plug-in job and works seamlessly in the R33 except that they use different O2 sensors (and heaters for the O2 sensors are wired differently). Both easily fixed.

Sensors:

R32 uses a titania sensor. These sensors don't produce a voltage themselves - they're resistive. So resistance changes between rich and lean. This type of sensor produces a voltage of between approx 0V for lean to 1V for rich.

R33 uses a zirconia sensor. This type of sensor produces a voltage of between approx 0V for lean to 1V for rich. When running these sensors with an R32 ECU you'll find that they still work but the voltage range is different (read lower). The lean/rich trigger voltages must be adjusted using NIStune. Monitor the voltages in NIStune and adjust the rich/lean trigger voltages as required.

Sensor heaters:

R32 runs the heaters whenever IGN power is on. R33 ECU controls the heaters itself by supplying GND (the heater has 12V supplied to the other side whenever IGN is on) to turn heaters on. So what we need to do is supply GND to the heaters so they operate the same as R32 - they're on whenever IGN is on. This is done inside the ECU by linking O2 sensor GND (pin 50) to the pin used for heater GND by the R33 ECU (pin 115).

R32 GTR heaters AND SENSOR get ground from pin 50. R33 GTR heaters AND SENSOR get ground from pin 115.

On R32 GTR ecu pin 115 is not connected. On R33 GTR ecu pin 115 provides heater ground. So to provide this GND using the R32 ECU we simply need to bridge pin 50 to 115 with a wire link.

http://nistune.com/docs/R32 GTR ECU on R33 GTR.pdf

[shaune]

11 hours ago, BK said:

Yes the R32 GTR ECU most certainly wants the 32 Titania version. There is a different setting in the Power FC to change in the ETC menu for the O2 sensor reg setting depending on R32 Titania or R33 Zirconia sensors. From Apexi:

There is a difference in the O2 Sensor for these vehicles. (With or without internal register)

After tuning, please check () "O2 Sensor REGISTER" for BNR32, and NOT for BCNR33.

So off (+ sign) for R33 O2 sensors. I have my BCNR33 set like this in my Apexi Power FC.

I don't know how the Haltech Elite deals with it as I have no narrowband O2 sensors fitted on my 32 (use CAN wideband) and have them turned off in the ESP software. Nistune is also onto this, here's what they have to say:

NIStune Using R32 GTR ECU on R33 GTR - Updated

The R32 ECU is a plug-in job and works seamlessly in the R33 except that they use different O2 sensors (and heaters for the O2 sensors are wired differently). Both easily fixed.

Sensors:

R32 uses a titania sensor. These sensors don't produce a voltage themselves - they're resistive. So resistance changes between rich and lean. This type of sensor produces a voltage of between approx 0V for lean to 1V for rich.

R33 uses a zirconia sensor. This type of sensor produces a voltage of between approx 0V for lean to 1V for rich. When running these sensors with an R32 ECU you'll find that they still work but the voltage range is different (read lower). The lean/rich trigger voltages must be adjusted using NIStune. Monitor the voltages in NIStune and adjust the rich/lean trigger voltages as required.

Sensor heaters:

R32 runs the heaters whenever IGN power is on. R33 ECU controls the heaters itself by supplying GND (the heater has 12V supplied to the other side whenever IGN is on) to turn heaters on. So what we need to do is supply GND to the heaters so they operate the same as R32 - they're on whenever IGN is on. This is done inside the ECU by linking O2 sensor GND (pin 50) to the pin used for heater GND by the R33 ECU (pin 115).

R32 GTR heaters AND SENSOR get ground from pin 50. R33 GTR heaters AND SENSOR get ground from pin 115.

On R32 GTR ecu pin 115 is not connected. On R33 GTR ecu pin 115 provides heater ground. So to provide this GND using the R32 ECU we simply need to bridge pin 50 to 115 with a wire link.

http://nistune.com/docs/R32 GTR ECU on R33 GTR.pdf

wow, good info!