BEX Engine Information Thread

[davkav]

I have decided to try and compile all of the BEX data into one thread.
Over time I have found that there are a few noticeable differences between the standard A4 1.8T and the BEX. I am not getting into specifics between other engine types this thread is for the BEX only.

The BEX was sold as a 190bhp model of the B6 A4 1.8T and was available in FWD or Quattro. The T for turbo in the badge on the rear of the car coloured in red noted that the car was a 190bhp model. From the engine bay the BEX stamp on the head identified that it was a 190bhp model and the engine cover also had the 1.8T Turbo inscription in Red.

Engine Specifications:

• 140 kW (190 hp) @ 5700 r/min
• 240 Nm @ 1900–5500 r/min

Pictures for reference:





The following differences can be found between standard models and the BEX:

• Additional Intercooler beneath the airbox
• Larger Turbocharger
• Different Exhaust Manifold
• Larger Injectors
• Larger Front Brake Discs
• Different Flywheel and Pressure Plate
• 01E Transmission with shorter Final Drive

Dual Side Mount Intercoolers (DSMIC)

• Stock Single Mounted Intercooler Part Number 8E0145806F / J
• BEX Second Mounted Intercooler Part Number 8E0145805Q

Link to VAGCAT.com

DIY of Second Intercooler install

Picture of my DSMIC before I fitted my front mount.



Picture from ETKA for reference:




Turbocharger

• Stock Turbocharger K03 Part Number 058145703J
  Specifications:
  Compressor:36/50
  Turbine: 40/45
• BEX Turbocharger K03S Part Number 06B145703B
  Specifications:
  Compressor: 38/51
  Turbine: 40/45

Link to VAGCAT.com

And for comparative purposes:

K04-015 Specifications:
Compressor: 38/51
Turbine: 42/46


Exhaust Manifold

• BEX Part Number 06B 253 033AH
• Stock Part Number 06B 253 033E

Link to VAGCAT.com

It seems from this thread that the manifolds are actually the same size. So the only real difference might just be the strength of the manifold it self.


Injectors

• Stock Injectors 282cc Part Number 06B133551M
• BEX Injectors 317cc Part Number 06A906031BA

Link to VAGCAT.com

Note: Injector size taken from USRT website here.


Front Brake Discs

• Stock Discs for US Market are 288mm
• BEX and BFB Engined Discs are 312mm

• Stock Carrier Part Number 4B0615125B
• BEX Carrier Part Number 4B0615125C

• Stock Brake Disc Part Number 4A0615301C
• BEX Brake Disc Part Number 4B0615301A

Link to VAGCAT.com


Flywheel

• Stock Flywheel Part Number 06B105266A (BFB), 06B105266E (AWA Chasis Number >> 8E-4-300 000), 06B105266F (AWA Chasis Number 8E-4-300 001>>)
• BEX Flywheel Part Number 06B105266B

Link to VAGCAT.com

I have no information as of yet about what the difference is between the standard and BEX flywheel. I reckon it is probably the weight of the flywheel. I am going to weigh my one at some stage and report back. In the mean time if someone could weigh there standard flywheel so we can compare that would be great.


Clutch Pressure Plate

• Stock Part Number 06B141117D(X)
• BEX Part Number 06B141117B(X)

Link to VAGCAT.com

Again not much information available here. The clutch disc seems to be the same for all engine codes so I would say there is slightly more clamping force on the BEX pressure plate.


Transmission
Gearbox Code for the BEX is GDZ/HER

• Gearing for 02X Transmission
  1st 3.67
  2nd 2.05
  3rd 1.37
  4th 1.03
  5th 0.80
  6th 0.66
  
  Final Drive 4.11
  
  
• Gearing for BEX 1.8T 01E Transmission
  1st 3.50
  2nd 1.89
  3rd 1.32
  4th 1.03
  5th 0.86
  6th 0.73
  
  Final Drive 4.38

Link to VAGCAT.com

Graph and data of 01E against 02X






ECU

There seems to be different ECU part number for different engines also. Presumably this is just a software difference to accommodate different injector sizes and turbocharger sizes.


Pictures of BEX Connecting Rods













This is as much information as I have so far. If anyone has anything to contribute that would be graet and I will try and keep this post as up to date and factual as possible.

Also if you register on vagcat.com (online version of ETKA) all of the vagcat link I have posted above will link to the relevant exploded diagrams and part numbers.

[AudiA4_20T]

damn the trans is different huh? That could be pretty big.

[olstyn]

The slightly shorter final drive probably evens out the difference between the 5-speed's gearing and the 6-speed's 1-5 gears, which would be nice. It always seemed a bit silly to me that the 6MT was taller in every gear, rather than shorter or equal in 1-5 with a taller 6th. How many RPM is a BEX car turning in 5th and 6th at 60 MPH?

[walky_talky20]

Ooh, didn't know there was a shorter final drive than 4.11 available. Interesting. I'm running 4.11's in my 5-speed 01A. The shorter ratio is fun.

And for BEX, Avant...and Ireland obviously.

[jarge]

Brake discs are the same size as BFB-engined ones have. They are 312mm too. Don't know if US-models (1.8T:s) do have those "big brakes" from MY 2003 onwards.

[Charles.waite]

Brake discs are the same size as BFB-engined ones have. They are 312mm too. Don't know if US-models (1.8T:s) do have those "big brakes" from MY 2003 onwards.

Nope. All the b6 1.8t engines (AMB) in North America have the 288 mm brakes regardless of package. The 3.0 engine b6s in North America have the 312mm brakes. The rears are a different story.

[CyberPMG]

I'm wondering if the USP sold in the US got the same transmission that was with the BEX motor. I know it's a 6 speed manual and that it's a 01X transmission... not a 01E. I also know that since mine was among the first wave of USPs sold in the US, the 6 speed was unique with that A4 USP until all manual A4's changed to a 6 speed in 2004.5.

[Charles.waite]

What's your trans code cyber? I have a 2004 USP also and my coworker has a 2004 6-speed non-USP. Could be a good comparison. ETKA lists the final drives so I could look them up.

[waldo1324]

awesome- i want to install that 2nd IC

[CyberPMG]

Unfortunately, my car is at the shop getting a remanufactured motor (oil pump failed and caused internal damage) and my transmission is being sent out to be rebuilt. I'll text the shop to see if they can tell me what the code is.

[Charles.waite]

Unfortunately, my car is at the shop getting a remanufactured motor (oil pump failed and caused internal damage) and my transmission is being sent out to be rebuilt. I'll text the shop to see if they can tell me what the code is.

No worries. I actually pulled it up in etka and the trannies are either 35/9 or 37/9 which is 3.88 or 4.11 respectively. There were no final drives that were lower (higher?) than 4.11 in the US for the B6.

awesome- i want to install that 2nd IC

Me too. ETKA diagrams, hoooo!

BEX DSMIC


AMB SMIC


BPG (2.0t) DSMIC


They're different enough it might be a pain to retrofit the BPG DSMICs. And I'm not sure of the scaling in ETKA but the BPG ones look smaller than the BEX ones. Either way, as much as I think the DSMIC is cool, a Apikol or Tyrolsport SMIC would still be a better choice unless you REALLY want to go OEM.

[fastolsen]

Nope. All the b6 1.8t engines (AMB) have the 288 mm brakes regardless of package. The 3.0 engine b6s have the 312mm brakes. The rears are a different story.

Mine got 312mm as standard. 2004 BFB

[Charles.waite]

Mine got 312mm as standard. 2004 BFB

Woops, I edited my post. I mean all those in North America. I should have clarified.

[vinny.dtw]

2004+ US A4's also have a k03s as far as I know.

[boy412]

...and the ECU is also different. Props for starting this thread!

Also, AFAIK the K03S is the standard K03-029 that most (or all?) of our cars have? The turbo on the BEX is a K03-73. Doug Harper @ Frankenturbo got hold of a batch of these a while back and was selling them. Specs are as follows:

K03-029 (aka K03S) Specs:
Compressor:36/50
Turbine: 40/45

K03-073 Specs:
Compressor: 38/51
Turbine: 40/45

K04-015 Specs:
Compressor: 38/51
Turbine: 42/46

So its sort of like a "baby" K04-015.

[B72011]

When I first got my Avant--I saw the red T on the back of my car and sent out a post asking if I had the 190HP motor? I got all excited that I had an etxra 10hp over most Audi fools. The responses came back--tough luck bud. Your red T means squat!
Which is it---my N. American Avant 1.8T has 180hp or 190hp?

[Charles.waite]

When I first got my Avant--I saw the red T on the back of my car and sent out a post asking if I had the 190HP motor? I got all excited that I had an etxra 10hp over most Audi fools. The responses came back--tough luck bud. Your red T means squat!
Which is it---my N. American Avant 1.8T has 180hp or 190hp?

It means nothing. It was done over here purely for looks.

Its funny there was a LONG (pointless) discussion in the b7 section too. My B7 has a red T. The consensus was there was no consensus. Its basically just a comsetic thing.

Honestly, I would never use a trim piece to determine what packages have on a car. Its like when people ask if they have the sport package based on what wheels they have. Something that dealers and owners often change quite frequently regardless of what came on the car from the factory.

Also I hate to break it to you, but our cars have 170hp...

[Bische]

The accessory pulley/harmonic balancer also has a different partnumber.

Did you ever get any pics of the BEX connecting rods Dave?

[CyberPMG]

The extra parts that make up the BEX DSMIC will work with our AMB motors. How do I know? I had that in my car back when I had a K04 turbo. A few years ago, there was a guy here in the forums that was able to source the parts from Germany. There's a how-to writeup on how to install this....

clicky clicky

[CyberPMG]

Found out the trans code on my USP is ETQ.

[davkav]

...and the ECU is also different. Props for starting this thread!

Also, AFAIK the K03S is the standard K03-029 that most (or all?) of our cars have? The turbo on the BEX is a K03-73. Doug Harper @ Frankenturbo got hold of a batch of these a while back and was selling them. Specs are as follows:

K03-029 (aka K03S) Specs:
Compressor:36/50
Turbine: 40/45

K03-073 Specs:
Compressor: 38/51
Turbine: 40/45

K04-015 Specs:
Compressor: 38/51
Turbine: 42/46

So its sort of like a "baby" K04-015.

Not too sure about this one. I will have to get my original turbo from the shed and see what the Borg Warner model is.

I dont think the K03S was the standard. As far as I know the turbos are in this order:

K03 Standard turbo
K03S BEX and maybe some other models
K04 BAM etc.

As for the ECU I didnt bother listing it as its just software thats going to be different. Actually I will add it to the list as I suppose it is relevant.

*** Original Post Updated with Turbocharger Specifications. ***

[davkav]

The accessory pulley/harmonic balancer also has a different partnumber.

Did you ever get any pics of the BEX connecting rods Dave?

Cheers Bische. I will add that to the list.

Sorry I completely forgot to take them, I am heading out to the garage this evening so I will snap a few pictures then and upload them.

[davkav]

Found out the trans code on my USP is ETQ.

Cyber I can't find any info in ETKA for the ETQ transmission. Whats the spec on it 5 or 6 speed, FWD or Quattro?

[AudiA4_20T]

You might have the Allroad trans. It's an 01E with a higher final drive

[davkav]

You might have the Allroad trans. It's an 01E with a higher final drive

Who are you directing that at Clint?

Do you have a 1.8T 01E gearbox code handy? Having some trouble identifying the standard gearbox for them in ETKA.

[CyberPMG]

I have one of the early Ultrasports sold here in the US. it's a 2004 A4 1.8T quattro with a 6 speed manual transmission. It was built on 9/11/2003 and arrived in the US in early November 2003.

I was told that this is a 01X transmission with a trans code of ETQ. Supposedly, ETQ can be interchangeable with GJW based on what I found here: http://www.autoguide.net/apf/audi-us...smissions.html

My Ultrasport (along with other USPs) was unique for the first half of the 2004 model year. During that time, the only way to get a six speed manual transmission with the 1.8T engine and quattro was to get the A4 with the Ultrasport package. Six months later, Audi changed out the transmission for all A4s to go with the 02X 6 speed manual.

I now have a feeling that mine was assembled from the Audi spare parts bin at the factory. LOL!! What sucks is that this is now an uncommon setup, but I was curious if this might have been the same setup that was found with the BEX engine for the European S-Line package. I figured that Audi would want to simply use the same part for the Ultrasport until they changed it for all A4s.

[davkav]

Seems I have overlooked the information regarding the gearbox.

The gearbox in my BEX is an 01E and I automatically assumed the others would be too. I didnt realise the other B6 1.8T's were 02X's.

So that is another major difference between the models then.

[davkav]

*** Updated section on the Final Drive to read Transmission instead as the transmission seems to differ between the BEX and others. ***

[rikk]

BEX has a 6-speed Getrag. Not sure are the other 6-speeds also Getrag transmissions? Also if I remember right, 3.0 has the same transmission as BEX. Maybe someone can check does the gear ratios match between 3.0 and BEX?

How many RPM is a BEX car turning in 5th and 6th at 60 MPH?

I have ~2500rpm at the 6th gear when I do 62mph (100km/h) with 235/35R19.

[Bische]

Really nice info about the transmissions, if/when mine blow up, im getting a BEX 01E 6spd setup

Dave, regarding the ECU part numbers:

All our ECU's with different partnumbers(letters at the end, 8E0909518xx) has its own combination of software and hardware version. But most likely you can successfully flash and run any '02 software on any '02 ECU, and any 03-05 software on any 03-05 ECU as long as the rest of the hardware like injectors etc. are the same.

You can NOT flash a 02' box with 03-05 software or vice versa, that WILL brick the ECU because they have different bootloaders. To recover from that you need to flash the right file with the ECU in boot mode.

[diagnosticator]

Anyone have the stock BEX torque and peak torque RPM numbers?

[AudiA4_20T]

BEX has a 6-speed Getrag. Not sure are the other 6-speeds also Getrag transmissions? Also if I remember right, 3.0 has the same transmission as BEX. Maybe someone can check does the gear ratios match between 3.0 and BEX?

I have ~2500rpm at the 6th gear when I do 62mph (100km/h) with 235/35R19.

No this is FALSE information, unless the trans is similar to the B6 S4.

01E= ZF
0A3= Getrag

2004+ US A4's also have a k03s as far as I know.

False. All B6s do

It means nothing. It was done over here purely for looks.

Its funny there was a LONG (pointless) discussion in the b7 section too. My B7 has a red T. The consensus was there was no consensus. Its basically just a comsetic thing.

Honestly, I would never use a trim piece to determine what packages have on a car. Its like when people ask if they have the sport package based on what wheels they have. Something that dealers and owners often change quite frequently regardless of what came on the car from the factory.

Also I hate to break it to you, but our cars have 170hp...

The reason this is a valid argument (maybe not for B6/B7), is the 2001 B5s that had the red "T" DID have more power

[rikk]

In Europe there is three version of 2.0 TFSI in B7:
Silver T is 170hp (TFSI e)
Red T is 200hp
Red T DTM edition is 220hp

In B6 1.8T:
Silver T is 150 or 163hp
Red T is 190hp

Anyone have the stock BEX torque and peak torque RPM numbers?

140 kW (190 hv) @ 5700 r/min
240 Nm @ 1900–5500 r/min

[rikk]

No this is FALSE information, unless the trans is similar to the B6 S4.

01E= ZF
0A3= Getrag

I have to check this. I wonder does the BEX with FWD and Quattro have different gear ratios..

[vinny.dtw]

No this is FALSE information, unless the trans is similar to the B6 S4.

01E= ZF
0A3= Getrag



False. All B6s do



The reason this is a valid argument (maybe not for B6/B7), is the 2001 B5s that had the red "T" DID have more power

Say that to the audi a4 i replace turbo and manifold on. In hindsight, it was a 02...Hmm. Fucking Audis.

[B72011]

DAMN Audi! Ok, I am pissed --170HP. If I was keeping this Avant--I would chip this beeatch. Love the car, but love our B7 mo. I dont know how people run a B6 without a chip upgrade.....unless you like just cruising.

It means nothing. It was done over here purely for looks.

Its funny there was a LONG (pointless) discussion in the b7 section too. My B7 has a red T. The consensus was there was no consensus. Its basically just a comsetic thing.

Honestly, I would never use a trim piece to determine what packages have on a car. Its like when people ask if they have the sport package based on what wheels they have. Something that dealers and owners often change quite frequently regardless of what came on the car from the factory.

Also I hate to break it to you, but our cars have 170hp...

[Charles.waite]

DAMN Audi! Ok, I am pissed --170HP. If I was keeping this Avant--I would chip this beeatch. Love the car, but love our B7 mo. I dont know how people run a B6 without a chip upgrade.....unless you like just cruising.

Its hard. even with the chip in my b6, my b7 is faster stock....

[davkav]

*** Original Post updated with Torque and Horsepower figures and pictures of BEX Connecting Rods. ***

[davkav]

I am also in the middle of updating the B6 Wiki with some of the information above. Man is there a bit of work to update it. Thanks John......

[spindoctor]

Good stuff.

Keep it coming(especially the transmission specs).