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Z4M Pre-Cat Temperature Sensor Male Thread Specs
- Ed Doe
- Senior Member
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- Joined: Tue Apr 22, 2014 6:06 pm
- Location: Ashbourne or Frimley
Z4M Pre-Cat Temperature Sensor Male Thread Specs
Hi all,
Bit of a long-shot but does anyone know what the Pre-Cat Temperature Sensor Thread Type/Size/Pitch/length is for the male thread on the Cat-section?
The thread in question is highlighted below;
Long story short this has obviously been heatcycled to death on my race-cats and when I came to remove the temp sensor the male thread just twisted and pulled out of the cats(!) Looking to get a replacement welded back in over winter, so I can get these fitted back onto the car
Thanks in advance!
Ed
Bit of a long-shot but does anyone know what the Pre-Cat Temperature Sensor Thread Type/Size/Pitch/length is for the male thread on the Cat-section?
The thread in question is highlighted below;
Long story short this has obviously been heatcycled to death on my race-cats and when I came to remove the temp sensor the male thread just twisted and pulled out of the cats(!) Looking to get a replacement welded back in over winter, so I can get these fitted back onto the car
Thanks in advance!
Ed
Carbon Black '07 M Coupe: Intrax 1k2 Coilovers, AP-Racing, Raybestos ST45s, Tillets, Schroth, Vibratechnic, Apex EC7, Strongstrut, Eventuri, Supersprint, RTD, 4.1FD
Silver Grey '06 3.0si Coupe - SOLD
Silver Grey '06 3.0si Coupe - SOLD
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- Member
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- Joined: Sun Jun 07, 2020 10:25 pm
- Location: London/Essex
Z4M Pre-Cat Temperature Sensor Male Thread Specs
Hi Ed,Ed Doe wrote: βMon Dec 04, 2023 11:20 am Hi all,
Bit of a long-shot but does anyone know what the Pre-Cat Temperature Sensor Thread Type/Size/Pitch/length is for the male thread on the Cat-section?
The thread in question is highlighted below;
Pre-Cat Tem Sensor Thread.PNG
Long story short this has obviously been heatcycled to death on my race-cats and when I came to remove the temp sensor the male thread just twisted and pulled out of the cats(!) Looking to get a replacement welded back in over winter, so I can get these fitted back onto the car
Thanks in advance!
Ed
What race cats are you running and does the car still pass the MOT emissions test? Did they make a noticeable difference?
Thanks,
GT Spec
E85 M, Aero Skirts and Hardtop
Schrick 288/280 Cams and Rockers
Karbonius Race Airbox
BMW Motorsport 4.1 FD
Supersprint Full System inc 100 Cell Cats
163M CSL Rims
Bilstein/Eibach B12
Recaro Sportster CS
Diagnostic scanning and coding in Essex
Schrick 288/280 Cams and Rockers
Karbonius Race Airbox
BMW Motorsport 4.1 FD
Supersprint Full System inc 100 Cell Cats
163M CSL Rims
Bilstein/Eibach B12
Recaro Sportster CS
Diagnostic scanning and coding in Essex
- Ed Doe
- Senior Member
- Posts: 2229
- Joined: Tue Apr 22, 2014 6:06 pm
- Location: Ashbourne or Frimley
Z4M Pre-Cat Temperature Sensor Male Thread Specs
Hi,
Hayward & Scott Race Cats - Link: https://www.haywardandscott.com/bmw/bmw ... -cats.html
- they're quite old now though. The 'on the record' answer to your second question is 'of course they pass emissions test every year'. If there was an 'off the record' answer to that question I'll let you infer what that might be
In terms of difference, I bought the car with them fitted, so can't really comment on the before/after.
In terms of noise, the exhaust is otherwise standard, it's a little louder/raspier than normal I'd say, but it's quite subtle, and for me most importantly doesn't put me at risk of any trackday noise limits, and there's no resonance meaning I can travel long distances in the car without feeling like someone is hammer drilling my cranium!
Carbon Black '07 M Coupe: Intrax 1k2 Coilovers, AP-Racing, Raybestos ST45s, Tillets, Schroth, Vibratechnic, Apex EC7, Strongstrut, Eventuri, Supersprint, RTD, 4.1FD
Silver Grey '06 3.0si Coupe - SOLD
Silver Grey '06 3.0si Coupe - SOLD
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Z4M Pre-Cat Temperature Sensor Male Thread Specs
Haha! UnderstoodEd Doe wrote: βMon Dec 04, 2023 11:39 amHi,
Hayward & Scott Race Cats - Link: https://www.haywardandscott.com/bmw/bmw ... -cats.html
- they're quite old now though. The 'on the record' answer to your second question is 'of course they pass emissions test every year'. If there was an 'off the record' answer to that question I'll let you infer what that might be
In terms of difference, I bought the car with them fitted, so can't really comment on the before/after.
In terms of noise, the exhaust is otherwise standard, it's a little louder/raspier than normal I'd say, but it's quite subtle, and for me most importantly doesn't put me at risk of any trackday noise limits, and there's no resonance meaning I can travel long distances in the car without feeling like someone is hammer drilling my cranium!
E85 M, Aero Skirts and Hardtop
Schrick 288/280 Cams and Rockers
Karbonius Race Airbox
BMW Motorsport 4.1 FD
Supersprint Full System inc 100 Cell Cats
163M CSL Rims
Bilstein/Eibach B12
Recaro Sportster CS
Diagnostic scanning and coding in Essex
Schrick 288/280 Cams and Rockers
Karbonius Race Airbox
BMW Motorsport 4.1 FD
Supersprint Full System inc 100 Cell Cats
163M CSL Rims
Bilstein/Eibach B12
Recaro Sportster CS
Diagnostic scanning and coding in Essex
- TomK
- Senior Member
- Posts: 2369
- Joined: Fri Jan 25, 2013 11:50 pm
- Location: West London
Z4M Pre-Cat Temperature Sensor Male Thread Specs
I replaced my egt last month, pretty sure it was M14. Google says;
Manufacturer Part Number: 11787831624
Connector Color: Black
Thread Diameter: M14
Thread Pitch: 1.5 mm
Tip Width: 7 mm
Wire Harness Length: 615 mm
I's not from an official BMW source but fairly sure that's right. Belt and braces I guess just order one from them, measure it and then send it back. It'll be a uk stock item no doubt so you'll just lose postage on the way back.
MC[IB], CSL airbox, Schrick 288/280 cams, 4.44FD, UUC SSK, SS race cat back, AP CP9660[F]/5144[R] brakes, Apex ARC-8 with AR-1 or PS5, KW ClubSport 2-way, Turner spherical arms, PMC uniball rtab, VB engine mounts, Rogue pulleys & RSMs, Tillett B6, half cage
- enuff_zed
- Lifer
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Z4M Pre-Cat Temperature Sensor Male Thread Specs
If it came off with the sensor, can you not now simply measure the thread on the sensor?
Must be fairly easy to remove that section from the sensor now?
Must be fairly easy to remove that section from the sensor now?
- Ed Doe
- Senior Member
- Posts: 2229
- Joined: Tue Apr 22, 2014 6:06 pm
- Location: Ashbourne or Frimley
Z4M Pre-Cat Temperature Sensor Male Thread Specs
I decided earlier this afternoon the sensible thing was to call H&S, who very sportingly have popped a replacement threaded male socket in the post to me foc should have just done that in the first place! Thanks for the info all the same Tom!TomK wrote: βMon Dec 04, 2023 5:27 pmI replaced my egt last month, pretty sure it was M14. Google says;
Manufacturer Part Number: 11787831624
Connector Color: Black
Thread Diameter: M14
Thread Pitch: 1.5 mm
Tip Width: 7 mm
Wire Harness Length: 615 mm
I's not from an official BMW source but fairly sure that's right. Belt and braces I guess just order one from them, measure it and then send it back. It'll be a uk stock item no doubt so you'll just lose postage on the way back.
In my rush to get it mot ready I swapped an alternative setup on with a new temp probe and bunged the old probe straight in the bin. This was back in June so no chance of lookimg at it now!
Carbon Black '07 M Coupe: Intrax 1k2 Coilovers, AP-Racing, Raybestos ST45s, Tillets, Schroth, Vibratechnic, Apex EC7, Strongstrut, Eventuri, Supersprint, RTD, 4.1FD
Silver Grey '06 3.0si Coupe - SOLD
Silver Grey '06 3.0si Coupe - SOLD
- Spriteracer
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- Location: West Wales
Z4M Pre-Cat Temperature Sensor Male Thread Specs
I use one of these. it covers all the usual metric and unf/unc sizes. Currently about Β£11 from Amazon. Speeds up the trial and error no end !
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2007 E86 "work in progress"
- Ed Doe
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- Joined: Tue Apr 22, 2014 6:06 pm
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Z4M Pre-Cat Temperature Sensor Male Thread Specs
that's a really useful tool! Thanks will probably get one of those!Spriteracer wrote: βMon Dec 04, 2023 6:36 pm I use one of these. it covers all the usual metric and unf/unc sizes. Currently about Β£11 from Amazon. Speeds up the trial and error no end !
Carbon Black '07 M Coupe: Intrax 1k2 Coilovers, AP-Racing, Raybestos ST45s, Tillets, Schroth, Vibratechnic, Apex EC7, Strongstrut, Eventuri, Supersprint, RTD, 4.1FD
Silver Grey '06 3.0si Coupe - SOLD
Silver Grey '06 3.0si Coupe - SOLD
- Vanne
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Z4M Pre-Cat Temperature Sensor Male Thread Specs
make sure you get the correct part number, Euro and US sensors are different..
2007 EuroSpec Z4///MC Building/Developing Z4 GT3
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Powered by Severn Tuning
- Ed Doe
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- Joined: Tue Apr 22, 2014 6:06 pm
- Location: Ashbourne or Frimley
Z4M Pre-Cat Temperature Sensor Male Thread Specs
Already have the (euro) sensor thanks, it's the actual male thread that gets welded into the cats that's the bit I need
Carbon Black '07 M Coupe: Intrax 1k2 Coilovers, AP-Racing, Raybestos ST45s, Tillets, Schroth, Vibratechnic, Apex EC7, Strongstrut, Eventuri, Supersprint, RTD, 4.1FD
Silver Grey '06 3.0si Coupe - SOLD
Silver Grey '06 3.0si Coupe - SOLD
- Ed Doe
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- Joined: Tue Apr 22, 2014 6:06 pm
- Location: Ashbourne or Frimley
Z4M Pre-Cat Temperature Sensor Male Thread Specs
Just in case anyone else can help, after exploring a few avenues I'm still unable to verify the thread so any help on this would be gratefully received!
Carbon Black '07 M Coupe: Intrax 1k2 Coilovers, AP-Racing, Raybestos ST45s, Tillets, Schroth, Vibratechnic, Apex EC7, Strongstrut, Eventuri, Supersprint, RTD, 4.1FD
Silver Grey '06 3.0si Coupe - SOLD
Silver Grey '06 3.0si Coupe - SOLD
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Z4M Pre-Cat Temperature Sensor Male Thread Specs
Hi Ed,
Finally got round to measuring it for you. Itβs M14 x 1.5. Measured it with a vernier and a thread pitch gauge
E85 M, Aero Skirts and Hardtop
Schrick 288/280 Cams and Rockers
Karbonius Race Airbox
BMW Motorsport 4.1 FD
Supersprint Full System inc 100 Cell Cats
163M CSL Rims
Bilstein/Eibach B12
Recaro Sportster CS
Diagnostic scanning and coding in Essex
Schrick 288/280 Cams and Rockers
Karbonius Race Airbox
BMW Motorsport 4.1 FD
Supersprint Full System inc 100 Cell Cats
163M CSL Rims
Bilstein/Eibach B12
Recaro Sportster CS
Diagnostic scanning and coding in Essex
- Ed Doe
- Senior Member
- Posts: 2229
- Joined: Tue Apr 22, 2014 6:06 pm
- Location: Ashbourne or Frimley
Z4M Pre-Cat Temperature Sensor Male Thread Specs
You absolute gentleman, thank you very much!
Carbon Black '07 M Coupe: Intrax 1k2 Coilovers, AP-Racing, Raybestos ST45s, Tillets, Schroth, Vibratechnic, Apex EC7, Strongstrut, Eventuri, Supersprint, RTD, 4.1FD
Silver Grey '06 3.0si Coupe - SOLD
Silver Grey '06 3.0si Coupe - SOLD
- Martyn
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Z4M Pre-Cat Temperature Sensor Male Thread Specs
M14x1.5 is what I told at the start of december