2004 BMW 760 N73 "A big mistake"

Your chance to introduce yourself and your vehicle
User avatar
Zeiss
Posts: 98
Joined: Tue Oct 05, 2021 6:32 pm
Location: Germany
Github Username: HeinrichG-V12

Re: 2004 BMW 760 N73 "A big mistake"

Post by Zeiss »

Hey Andrey,

sorry, at the moment is time a very big problem... I can't get to any of my projects, it really sucks.
AndreyB wrote:
Sat Feb 05, 2022 2:02 am
Image
10223: CAN-ACC signal error.
10221: CAN-ASC/DSC signal error. (ASC/DSC is the same ecu)
10098: activation (gas)tank evaporation valves
AndreyB wrote:
Sat Feb 05, 2022 2:02 am
also engine is shaking sometimes not much and currently only code is in slave ECU CDKPH Nockelwellengeber Einlass which seems to be camshaft sensor inlet

Image
Yes, correct, this means indeed camshaft sensor inlet. These sensors break down, replace them and see what happens.
AndreyB wrote:
Sat Feb 05, 2022 2:02 am
Well, INPA cannot communicate with cruise control and DSC. Let me double check how I've installed fuses and let me double check the actual fuse.
Are you able to communicate with them directly in INPA? If you try to connect to those ECUs?

I don't think that you have an power problem, I think it is can problem. DSC and ACC modules are a bit special, they are connected to "front termination resistor", behind the IVM, so to speak, check this:
grafik.png
grafik.png (106.94 KiB) Viewed 5032 times
And this resistor is located there:
grafik.png
grafik.png (79.31 KiB) Viewed 5032 times
It is like an extension of the CAN bus.

Something else: an E65 reacts with very funny errors when the battery is somewhat discharged! Please see how many volts your battery still has and charge it if necessary.
Regards,
Heinrich

My GitHub
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Zeiss wrote:
Sat Feb 05, 2022 11:20 am
Yes, correct, this means indeed camshaft sensor inlet. These sensors break down
WALKER PRODUCTS 2351508 ordered
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Zeiss wrote:
Thu Dec 16, 2021 1:58 pm
already built an adapter
Speaking of wiring is WDS_NG URL shared anywhere or is that a sensitive matter? How do we share WDS_NG with Bill and Simon?
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Does anyone have N73 workshop repair manual by any chance because I do not :(

Wonder if intake cam replacement is an engine out job or not. I can kind of see the connector behind those two hoses but no idea how much stuff to take apart.

Did I mark bank #2 right?

Acorn under engine cover a bit scary.
Attachments
IMG_20220209_131104.jpg
IMG_20220209_131104.jpg (760.19 KiB) Viewed 4889 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Simon@FutureProof
contributor
contributor
Posts: 400
Joined: Tue Jul 24, 2018 8:55 pm
Github Username: Orchardperformance
Slack: Orchardperformance

Re: 2004 BMW 760 N73 "A big mistake"

Post by Simon@FutureProof »

Intake cam replacement should be possible with engine in, just a question of why?
Now keeping MRE and Proteus in stock in the UK - https://www.FutureProofPerformance.com
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

OrchardPerformance wrote:
Wed Feb 09, 2022 6:20 pm
Intake cam replacement should be possible with engine in, just a question of why?
It would be nice to address the check engine light and to get a false sense of comfort from knowing that at least the chain is not loose enough for ECU to throw a code. But it's only worth it if under X number of hours and considering how tight everything is my preference is not to dive blind.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Simon@FutureProof
contributor
contributor
Posts: 400
Joined: Tue Jul 24, 2018 8:55 pm
Github Username: Orchardperformance
Slack: Orchardperformance

Re: 2004 BMW 760 N73 "A big mistake"

Post by Simon@FutureProof »

Bill should be able to advise on this soon as he is going to have to do it.
He found a lump of chain guide in the sump yesterday.
Now keeping MRE and Proteus in stock in the UK - https://www.FutureProofPerformance.com
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Well that was wrong end of engine. On N73 cam sensors are on the back side of the engine, pretty amazing access once engine bay partitioning wall is removed
image.png
image.png (80.22 KiB) Viewed 4837 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

That was easy, intake cam position sensor bank #2 replaced, piece of cake, INPA is no longer complaining about that one.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Man in the middle status update: it moves but also gives me transmission fault on gauge cluster. I have no idea what am I doing wrong or what other packets are needed.

The packets I relay into TCU are
CAN_BMW_E90_TORQUE_1 = 0x0A8
CAN_BMW_E90_TORQUE_2 = 0x0A9
CAN_BMW_E90_RPM_THROTTLE = 0x0AA
CAN_BMW_E90_DSC_TORQUE_DEMAND = 0x0B6
CAN_BMW_E90_WHEEL_SPEED = 0x0CE
CAN_BMW_E90_IGNITION_KEY = 0x130
CAN_BMW_E65_GEAR_SELECTOR = 0x192
CAN_BMW_E90_DSC_STATUS = 0x19E
CAN_BMW_E90_DSC_SPEED = 0x1A0
CAN_BMW_E90_COOLANT = 0x1D0
CAN_BMW_E90_LOCKING = 0x2FC
CAN_BMW_E90_MSA = 0x308
CAN_BMW_E90_DASH_ON = 0x332
CAN_BMW_E90_ECU_NETWORK = 0x492

the packets which I relay from TCU are
CAN_BMW_GEAR_TORQUE_DEMAND2 = 0x0B5
CAN_BMW_GEAR_TRANSMISSION_DATA = 0x0BA
CAN_BMW_GEAR_GEARBOX_DATA_2 = 0x1A2
CAN_BMW_GEAR_TRANSMISSION_DISP = 0x1D2
CAN_BMW_GEAR_GANG_STATUS = 0x304
CAN_BMW_GEAR_NETWORK = 0x498
CAN_BMW_GEAR_SERVICE = 0x598

Overall diagram
image.png
image.png (15.6 KiB) Viewed 4798 times
wiring diagram
image.png
image.png (49.08 KiB) Viewed 4798 times

PCAN confirms that TCU responses are relayed for instance packets 0B5 0BA
image.png
image.png (61.99 KiB) Viewed 4793 times

My Lua script confirms activity. Trace example attached. What am I doing wrong?
image.png
image.png (165.15 KiB) Viewed 4785 times
Real world picture
20220210_133630.jpg
20220210_133630.jpg (793.6 KiB) Viewed 4798 times
Attachments
man-in-the-middle.txt
(348.7 KiB) Downloaded 184 times
from-TCU.txt
(31.54 KiB) Downloaded 188 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

suuuuuuuper confused

at the moment with Proteus i see x3 times the expected number of 0B5 and 0BA packets

exhibit A https://github.com/rusefi/rusefi_documentation/blob/master/OEM-Docs/Bmw/2003_7_Series_e65/HeinrichG-V12-E65_ReverseEngineering/E65-760-andrey-2021-dec-29-oem-reverse-drive-around-block.trc vs https://github.com/rusefi/rusefi_documentation/blob/master/OEM-Docs/Bmw/2003_7_Series_e65/HeinrichG-V12-E65_ReverseEngineering/E65-760-andrey-2021-dec-29-proteus-in-the-middle-liming-mode-no-speedometer-reverse-drive-around-block.trc

OEM file shows perfect 10ms period

Code: Select all

159  77313576.750 DT     00B5 Rx 8  BF 08 80 00 08 14 0A 5B 
    166  77313586.774 DT     00B5 Rx 8  C3 09 80 00 08 14 0C 5C 
    173  77313596.593 DT     00B5 Rx 8  C3 0A 80 00 08 14 0C 5B 
    181  77313607.410 DT     00B5 Rx 8  C4 0B 80 00 08 14 0C 5B 
    189  77313616.736 DT     00B5 Rx 8  C4 0C 80 00 08 14 0A 5C 
    196  77313626.910 DT     00B5 Rx 8  C5 0D 80 00 08 14 0A 5C 
    205  77313636.703 DT     00B5 Rx 8  C5 0E 80 00 08 14 0A 5B 
    213  77313646.922 DT     00B5 Rx 8  BA 00 80 00 08 14 0C 5C

while Proteus + Lua relay shows 2ms period?!

Code: Select all

83     14847.768 DT     00B5 Rx 8  42 07 18 80 21 14 56 61 
     85     14849.412 DT     00B5 Rx 8  43 08 18 80 21 14 56 61 
     93     14851.194 DT     00B5 Rx 8  44 09 18 80 21 14 56 61 
     96     14852.519 DT     00B5 Rx 8  45 0A 18 80 21 14 56 61 
     98     14854.179 DT     00B5 Rx 8  46 0B 18 80 21 14 56 61 
    100     14855.436 DT     00B5 Rx 8  47 0C 18 80 21 14 56 61 
    102     14856.863 DT     00B5 Rx 8  48 0D 18 80 21 14 56 61 
    104     14858.891 DT     00B5 Rx 8  49 0E 18 80 21 14 56 61 
    109     14860.385 DT     00B5 Rx 8  3B 00 18 80 21 14 56 61

both recordings made with PCAN

Somewhat similar picture with another device. Now I am looking into a two channel recording http://github.com/rusefi/rusefi_documentation/blob/master/temp/2ch-with-proteus.trc one channel is car another side is TCU behind Proteus
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
bill
Posts: 214
Joined: Sun Mar 29, 2020 1:44 pm
Location: DC usa

Re: 2004 BMW 760 N73 "A big mistake"

Post by bill »

"A lot of DSC/airbag/brake lights on the dash. Feels like power steering is not working."
did you get that fixed?
i bet your steering fluid is low
check that fluid level.
the DSC is run by the power steering pump.
i had a mega leak in the lines. so it killed the steering and DSC when the fluid leaked out .
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

bill wrote:
Sun Feb 13, 2022 12:22 am
"A lot of DSC/airbag/brake lights on the dash. Feels like power steering is not working."
What was systems have in common is bright on the same sub-harness where I am cutting wires for my transmission hacks. My understanding is that this is about lack of CAN communication not mechanical. For now it works better for me to have these systems broken actually so I am keeping as is for now.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

hello P0459 | Evaporative Emission System Purge Control Valve Circuit High
image.png
image.png (21.68 KiB) Viewed 4532 times
wow the left side of the engine is happy! things are so great that I've invested into a full tank of gas, and seriously consider replacing a license plate lamp. Ohh, and an oil change.
image.png
image.png (17.26 KiB) Viewed 4532 times
image.png
image.png (394.64 KiB) Viewed 4532 times
would also need to translate this and see if it's https://www.bimmerfest.com/threads/abs-dsc-parking-brake-malfunction-fixed.749964/

5E9B Return pump?
5EE4 Precharging pump? short circuit?
image.png
image.png (82.2 KiB) Viewed 4532 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Also what the hell is that lovely thing with a fan?

Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

AndreyB wrote:
Sun Feb 13, 2022 11:33 pm
hello P0459 | Evaporative Emission System Purge Control Valve Circuit High
I absolutely love how two of these 7512582 are right next to each over with perfect access! So easy to see that one beeps with DMM while the other one does not.

Is fuel supposed to leak when I disconnect? Is my canister not doing the canistering?

Also just a sad picture.
Attachments
20220213_223942.jpg
20220213_223942.jpg (504.99 KiB) Viewed 4499 times
Slack Image (2022-02-13_22-37-40-980).jpg
Slack Image (2022-02-13_22-37-40-980).jpg (101.48 KiB) Viewed 4499 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
mk e
Posts: 475
Joined: Tue Dec 06, 2016 7:32 pm

Re: 2004 BMW 760 N73 "A big mistake"

Post by mk e »

Are those cabin air filters? It looks like you have mice?
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

mk e wrote:
Mon Feb 14, 2022 12:50 pm
Are those cabin air filters? It looks like you have mice?
Those are engine filters. Car only spend a week at this garage and a year outside, i assume old stuff.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
Zeiss
Posts: 98
Joined: Tue Oct 05, 2021 6:32 pm
Location: Germany
Github Username: HeinrichG-V12

Re: 2004 BMW 760 N73 "A big mistake"

Post by Zeiss »

Hey Andrey,
AndreyB wrote:
Sun Feb 06, 2022 5:28 pm
Zeiss wrote:
Thu Dec 16, 2021 1:58 pm
already built an adapter
Speaking of wiring is WDS_NG URL shared anywhere or is that a sensitive matter? How do we share WDS_NG with Bill and Simon?
You guys can download WDS_NG here: https://www.bmw-rudel.de/index.php/downloads here is always the newset version.
AndreyB wrote:
Wed Feb 09, 2022 6:13 pm
Does anyone have N73 workshop repair manual by any chance because I do not :(

Wonder if intake cam replacement is an engine out job or not. I can kind of see the connector behind those two hoses but no idea how much stuff to take apart.

Did I mark bank #2 right?

Acorn under engine cover a bit scary.
It is possible to remove the camshaft without removing the engine. But why do you want to do this?

What do you want to do?

The bench markings are correct. Bank 1 is on the passenger side, bank 2 is on the driver's side.
AndreyB wrote:
Mon Feb 14, 2022 3:53 am
AndreyB wrote:
Sun Feb 13, 2022 11:33 pm
hello P0459 | Evaporative Emission System Purge Control Valve Circuit High
I absolutely love how two of these 7512582 are right next to each over with perfect access! So easy to see that one beeps with DMM while the other one does not.

Is fuel supposed to leak when I disconnect? Is my canister not doing the canistering?

Also just a sad picture.
There should be no fuel leakage when you disconnect the hoses. If there is fuel coming out, it means that the diaphragms of the high pressure pumps are defective and need to be replaced.... Check this: https://www.bmw-rudel.de/index.php/bmw-e66/werkstattecke/mechanik/13-e65/57-hochdruckpumpen (Number 11) and that https://www.bmw-rudel.de/index.php/bmw-e66/werkstattecke/mechanik/13-e65/18-reparatur

You can get the cut to size diaphragm from me for 100€ (two O-rings and four diaphragms, two per pump).

https://www.bmw-rudel.de is my homepage with a lot infos about E66 and E31 :)

Sorry Andrew, I haven't gotten around to looking at the man-in-the-middle story yet, it's just too cold in the garage right now....
Regards,
Heinrich

My GitHub
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Zeiss wrote:
Mon Feb 14, 2022 4:27 pm
There should be no fuel leakage when you disconnect the hoses. If there is fuel coming out, it means that the diaphragms of the high pressure pumps are defective and need to be replaced.... Check this: https://www.bmw-rudel.de/index.php/bmw-e66/werkstattecke/mechanik/13-e65/57-hochdruckpumpen (Number 11) and that https://www.bmw-rudel.de/index.php/bmw-e66/werkstattecke/mechanik/13-e65/18-reparatur
If the membrane is closed, the fuel can flow directly into the tank ventilation, which is not particularly tragic. However, when the engine is warming up, the tank vent valves (TEV) are closed and fuel is accumulating in the system. When the TEVs are opened, the fuel flows into the intake manifold and is then sucked into the engine and burned. However, depending on the accelerator pedal position, the engine reacts differently to a mixture that is far too rich. If you are "crawling" (rolling slowly, no throttle at all), the engine will die, but can be restarted immediately. When you're about to accelerate, there's a firm jerk, like turning the engine off for a second and then back on. This happens two or three times
oh yes that's what I have
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

Two of https://www.summitracing.com/parts/mrf-mp-9400-03 ordered shipping directly to @abricosvw he even has a training pump and Carlyle Socket TS30H magic

Let's switch to something way more fun for a second. If we go for internet points maybe a video of drifting? E65 definitely has open diff and it sounds like diff has to be welded for those application and looks like a trivial thing to weld. A more interesting challenge would be keeping car in gear.

We know that E90 is related to my E65 in terms of CAN traffic. We know that E90 used 6HP. I wonder if I can run my E65 in Steptronic MS mode assuming "Steptronic MS mode" means what I want it to mean?
image.png
image.png (188.69 KiB) Viewed 4371 times
Attachments
ApplicationFrameHost_Xy4Pbai9lI.png
ApplicationFrameHost_Xy4Pbai9lI.png (836.89 KiB) Viewed 4371 times
ApplicationFrameHost_vI7fxYcAWy.png
ApplicationFrameHost_vI7fxYcAWy.png (995.16 KiB) Viewed 4371 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

AndreyB wrote:
Mon Feb 14, 2022 10:05 pm
A more interesting challenge would be keeping car in gear.

We know that E90 is related to my E65 in terms of CAN traffic. We know that E90 used 6HP. I wonder if I can run my E65 in Steptronic MS mode assuming "Steptronic MS mode" means what I want it to mean?
I am an idiot, I have manual mode on my car, I just need to put it back together and try it.
Both buttons in the front of steering wheel are for downshifting. There are two more behind the steering wheels. Those are for upshifting.
image.png
image.png (338.31 KiB) Viewed 4345 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
bill
Posts: 214
Joined: Sun Mar 29, 2020 1:44 pm
Location: DC usa

Re: 2004 BMW 760 N73 "A big mistake"

Post by bill »

you are gonna WELD the diff?
that is pretty hardcore
dropping the rear subframe is a pain in the ass
i just did it

as the guy in the video said
"AAAGGHHH... i can't believe its finally out"
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

bill wrote:
Tue Feb 15, 2022 1:41 am
you are gonna WELD the diff?
At the moment I am considering options. Considering the chance of engine blowing up on first drift attempt I should postpone actual welding and actual revving for until rusEFI N73 drive around the block.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
User avatar
Zeiss
Posts: 98
Joined: Tue Oct 05, 2021 6:32 pm
Location: Germany
Github Username: HeinrichG-V12

Re: 2004 BMW 760 N73 "A big mistake"

Post by Zeiss »

AndreyB wrote:
Mon Feb 14, 2022 10:05 pm
Two of https://www.summitracing.com/parts/mrf-mp-9400-03 ordered shipping directly to @abricosvw he even has a training pump and Carlyle Socket TS30H magic
This will not last Andej. It took us (N73 drivers) years to find the right material... This Magnaflow scrap you can send right back. As I said, for 100€ you get from me a complete repair kit for the both high pressure pumps.
Regards,
Heinrich

My GitHub
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

I am trying to get 80% of the results at 20% the effort, after all I only need this car to last 500 more miles. Please forgive me for the neandertal approach to a very nice piece of engineering :(

I have too much random oil around my place I will put fresh oil into the car and drive it just for 50 miles and see what comes out.

For better context let me really ask Bill to have a thread on his 760



Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
bill
Posts: 214
Joined: Sun Mar 29, 2020 1:44 pm
Location: DC usa

Re: 2004 BMW 760 N73 "A big mistake"

Post by bill »

AndreyB wrote:
Tue Feb 15, 2022 4:32 pm
I am trying to get 80% of the results at 20% the effort, after all I only need this car to last 500 more miles.
I have too much random oil around my place I will put fresh oil into the car and drive it just for 50 miles and see what comes out.
For better context let me really ask Bill to have a thread on his 760
what happens after 500 miles? you give it the heave-ho? or it will be destroyed for science?

you can just drop the oil pan pretty easily ( for a german car)
and look inside. before you put fresh oil in the car .

you just need a new oil pan gasket -- $12

the synthetic 5W-30 oil is like--- 10 quarts--- for $60
Screen Shot 2022-02-15 at 1.35.49 PM.png
Screen Shot 2022-02-15 at 1.35.49 PM.png (33.05 KiB) Viewed 4241 times
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

New used ABS controller installed, still waiting for that new used EVAP solenoid. Next step oil change with wrong oil and $5 just for 50 miles, and then less wrong oil and nicer filter. Also need to do transmission fluid change I guess?
Attachments
Slack Image (2022-02-16_22-26-23-377).jpg
Slack Image (2022-02-16_22-26-23-377).jpg (85.85 KiB) Viewed 4124 times
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
bill
Posts: 214
Joined: Sun Mar 29, 2020 1:44 pm
Location: DC usa

Re: 2004 BMW 760 N73 "A big mistake"

Post by bill »

tranny fluid change needs a new pan/filter too-- like $60
plus the fluid is expensive ...
and you only get a few quarts out by dropping the pan... it holds like 10 total in the tranny cooler, torque converter, etc
and you need a special tool to pump out the remaining 8 quarts

how much longer are you keeping this machine?
if it shifts okay for now,
and is not low...
then... perhaps wait?
User avatar
AndreyB
Site Admin
Posts: 13000
Joined: Wed Aug 28, 2013 1:28 am
Location: Jersey City
Github Username: rusefillc
Slack: Andrey B

Re: 2004 BMW 760 N73 "A big mistake"

Post by AndreyB »

bill wrote:
Thu Feb 17, 2022 2:33 pm
how much longer are you keeping this machine? perhaps wait?
I do not have an answer, there is a wide array of possibilities from daily driver to abusing for marketing purposes. But even for drifting experiments my preference would be to do easy maintenance like transmission drain and fill.

Castrol Import Multi-Vehicle Automatic Transmission Fluid is mentioned more than once in the comments on the video below.

Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Post Reply