Im planning an M57 engine conversion in my head but would like to keep the ACE. I think the easiest way to do it would be to fit an electric hydraulic pump like fitted to some cars for the powersteering. Anyone knows where I could get the specifications for the stock pump so i can find a comparable one? or any reason why this wouldnt work?
Disco 2 ACE pump specifications
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sierrafery
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Hi. If your only concern for an engine conversion is the ACE you are extremely optimistic or a genius in electronics to be able to emulate a running Td5 while it's not there... first of all tell us how will you pair that M57 engine with the ACE ECU, BCU, SLABS and instrument pack as to have all the ABS related systems, gauges and warnings in working order ...unless you want just a botched up Discovery Series II body to roll on the road like a LR Series II 
as about the ACE beside oil pressure which might be doable with an electric pump it needs inputs from the SLABS ECU and the Td5 ECM too which are both interconnected and need a well running Td5 engine as to not go to default. AAMOF dont you have any MOT rules in Malta? that "hybrid" would not pass serious tests in most european countries due to missing warnings
as about the ACE beside oil pressure which might be doable with an electric pump it needs inputs from the SLABS ECU and the Td5 ECM too which are both interconnected and need a well running Td5 engine as to not go to default. AAMOF dont you have any MOT rules in Malta? that "hybrid" would not pass serious tests in most european countries due to missing warnings
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The M57 is a common conversion option. There are custom made circuits to pair the dashboard to the engine ecu and also keep the slabs system working, and even the other functions like the climate control and the cruise control. Apart from the ace, another problem would be the aircondition pump since that goes straight where the d2 steering box. The solution for that would be an electric pump as fitted in a Leaf or so.
what im saying is that it is certainly possible to have an interface between the M57 engine and the various modules of a d2. The only thing that I dont have an answer yet is ACE and I think an electric power steering pump as fitted to some cars should work. I might actually fit it before i do the conversion as an electric pump would have a few advantages in my opinion.
sierrafery
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sierrafery
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Show me an example of an emulator which can substitute the td5 ECM inputs to trick all the ECUs that it is running well while other engine is there, not just small talk please or advertising made by selers for profit. i've seen myself all kind of ugly improvisations claimed to be Ok by those who couldnt admit it's a botch... its named " cognitive dissonance.. the engine os self justification"
Alex J Castleton
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There’s a guy I know that’s managed to produce a full interface for SLABS/ACE and even cruise control for the Td5 to M57 conversions which will be made available to buy soon.
A way of getting the inputs to those ECUs without the Td5 fitted is to leave the Td5 ECU in place and supply it with engine speed signal from the M57. I’ve not done it but I know someone that has and it works.
I’ve just done this conversion and ABS is something I’m about to tackle. I’ve not kept ACE or AC for now but I may go back to them later.
sierrafery
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So do you mean that the M57's crank sensor and flywheel are the same with the Td5's and the signal has the same waveform while the rpm input is matching the driver demand(TPS input)? even if you let the TPS there connected to the Td5 ECM it doesnt mean that at a certain throttle position the M57 will deliver the same torque... also the Td5 ECM needs ECT, FT, MAP/IAT, MAF correct inputs to not go to default and what about the TPS input? this is more complicated than it appears believe me. I can make any conversion myself to make a D2 to run with any engine and botch up all the warnings and management but that doesnt mean it's ok... so how would you make the EMS warning light to come on if there's some M57 engine misbehaviour or lack of fuelling as long as the warning it's managed by the Td5 ECM but the engine is not throttled by the Td5 TPS? I dont say it can't be done but i declare that if somewone claims that it's perfect it's just a false impression. I'll watch this thread with interest to see the outcome.
good luck with that, i'll wait to see that interface's description especially for the instrument pack's management
i can write a whole novel about that but i'd like to see an explanation just about one of the elements: how would the Td5 ECM read and 'consider' it's ok the input from a 4 bar MAP sensor while it is "calibrated" in the fuel map for a 2.5 bar sensor with a different voltage curve? ... and so on with all the other sensors and once an input is not like expected the Td5 ECM it goes to default and sends that message to the SLABS which goes to it's own default with "wrong engine data" code and bring up the 3 amigos
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Alex J Castleton
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So do you mean that the M57's crank sensor and flywheel are the same with the Td5's and the signal has the same waveform while the rpm input is matching the driver demand(TPS input)? even if you let the TPS there connected to the Td5 ECM it doesnt mean that at a certain throttle position the M57 will deliver the same torque... also the Td5 ECM needs ECT, FT, MAP/IAT, MAF correct inputs to not go to default and what about the TPS input? this is more complicated than it appears believe me. I can make any conversion myself to make a D2 to run with any engine and botch up all the warnings and management but that doesnt mean it's ok... so how would you make the EMS warning light to come on if there's some M57 engine misbehaviour or lack of fuelling as long as the warning it's managed by the Td5 ECM but the engine is not throttled by the Td5 TPS? I dont say it can't be done but i declare that if somewone claims that it's perfect it's just a false impression. I'll watch this thread with interest to see the outcome.
good luck with that, i'll wait to see that interface's description especially for the instrument pack's management
i can write a whole novel about that but i'd like to see an explanation just about one of the elements: how would the Td5 ECM read and 'consider' it's ok the input from a 4 bar MAP sensor while it is "calibrated" in the fuel map for a 2.5 bar sensor with a different voltage curve? ... and so on with all the other sensors and once an input is not like expected the Td5 ECM it goes to default and sends that message to the SLABS which goes to it's own default with "wrong engine data" code and bring up the 3 amigos
No one is claiming it’s perfect. I don’t know exactly how that was done because I didn’t do it, as I said.
I’m only now about to start tackling this issue on mine in the next few weeks. I’ve managed to get everything else talking so far so I don’t really see this being a huge problem.
I have driven a BMW 3.0 at around 180 to 190 and it was OK, hence why I was wondering
Any update on how the conversion turned out?
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