M112 C280 Engine Swap to ML320 3.0L or ML350 3.7L
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1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
M112 C280 Engine Swap to ML320 3.0L or ML350 3.7L
I'm not sure if this has been done by anyone or not; theoretically, it should be a straight swap to take an engine and ECU from an ML (with wiring harness and injectors), swap it into another M112 C, and you have an increase in power instantly.
However, I cannot confirm this. Has anyone attempted this project before? I would think a 3.7L from an ML350 would be just as compatible as a 3.2L from an ML350.
However, I cannot confirm this. Has anyone attempted this project before? I would think a 3.7L from an ML350 would be just as compatible as a 3.2L from an ML350.
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1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
I checked on the Club202 forum with a knowledgable person. The engines will swap but without the wiring harness and ECU. The current ECU in the C280 would have to be recoded using the SDS / DAS software. At the same time, the proper engine variant code will need to be provided. Does anyone with SDS / DAS coding knowledge know about this on the board here?
Also, can this engine variant code be obtained offline with a Chinese cloned SDS?
Also, can this engine variant code be obtained offline with a Chinese cloned SDS?
Last edited by Uranium238; May 20, 2014 at 05:29 PM.
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Why not swap the Engine only, then reprogram the ECU, to match the more value of displacement,,
is your C280 has the same model year of that ML350..??
ZAYED,,
is your C280 has the same model year of that ML350..??
ZAYED,,
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1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
You had mentioned the above quote in a different thread. Is it true and have you done the swap? It sounds like perfect upgrade now although I probably will use the ML350 intake, MAF and injectors rather than an M113's.
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
00 25 should be the round plug, means you have ECU ME2.0 or M2.1,,
BTW; I didn't see any difference between M112 V6 intakes, even with 3.7l,
they are the same, as well as T/B & MAF,
3.7l using the same injectors with early M113, which is 197cc, while 3.2l using 181cc, not that significant diff.,
you can swap the 3.7l Engine & using the exist 3.2l wiring harness, the car will working,
but you will need to refile the ECU, to compromise with 3.7l....
ZAYED,,
BTW; I didn't see any difference between M112 V6 intakes, even with 3.7l,
they are the same, as well as T/B & MAF,
3.7l using the same injectors with early M113, which is 197cc, while 3.2l using 181cc, not that significant diff.,
you can swap the 3.7l Engine & using the exist 3.2l wiring harness, the car will working,
but you will need to refile the ECU, to compromise with 3.7l....
ZAYED,,
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1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
I did some research and it looks like I have to use the M113 TB off an early ML430/E430/CLK430.
I do wonder though if the V8 TB bolts right up to the C280 intake manifold and that the intake matches the intake ports of the 3.7L. I don't think the bigger motors ports changed when compared to the 2.8L, but only the block's internals.
I do wonder though if the V8 TB bolts right up to the C280 intake manifold and that the intake matches the intake ports of the 3.7L. I don't think the bigger motors ports changed when compared to the 2.8L, but only the block's internals.
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Dealer will NOT accept to do a sort of that upgrade, access coding/map thought DAS, need a good tuner to do it,
such as (E/C, OE tuning, speed driven, logic lab)...
ZAYED,,
such as (E/C, OE tuning, speed driven, logic lab)...
ZAYED,,
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1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
Sadly, tuners are a little to come by in the SF Bay Area. 
I wonder if this can be done with one of those Star SDS or DAS softwares off ebay, the Chinese clones?
I wonder if this can be done with one of those Star SDS or DAS softwares off ebay, the Chinese clones?
Last edited by Uranium238; May 27, 2014 at 01:29 PM.
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
Unfortunately no, it's a little bit risky, to play with an ECU map,
i think you can do a remote tune with E/C, no need to send the ECU to them....
ZAYED,,
i think you can do a remote tune with E/C, no need to send the ECU to them....
ZAYED,,
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1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
What is E/C? I'm used to tuning up 80's Porsches and the Mercedes from the 90s and early 2000's are a whole new language to me.
In the end, it seems easier to just swap in the long block and force the C280's ECU to adjust the air and fuel to the bigger bore. Both the 2.8L and 3.7L are 10:1. The ECU regonizes the compression, but as soon as the O2 sensors pick up a difference in ratios, it should adjust and adapt over time to the changes.
With regard to the fuel injectors, the C280's are 15 lbs/hr while the ML350 is 21 lbs/hr with the 3.2L ML320 engine using 19 lbs/hr. That is a big difference and will throw off ratios leaning toward running rich if the ECU is not calibrated for those higher flow rates.
In the end, it seems easier to just swap in the long block and force the C280's ECU to adjust the air and fuel to the bigger bore. Both the 2.8L and 3.7L are 10:1. The ECU regonizes the compression, but as soon as the O2 sensors pick up a difference in ratios, it should adjust and adapt over time to the changes.
With regard to the fuel injectors, the C280's are 15 lbs/hr while the ML350 is 21 lbs/hr with the 3.2L ML320 engine using 19 lbs/hr. That is a big difference and will throw off ratios leaning toward running rich if the ECU is not calibrated for those higher flow rates.
Last edited by Uranium238; May 27, 2014 at 02:35 PM.
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1987 Porsche 928 S4, 2009 Mercedes E350, 2011 Mercedes GL450, 2003 Mercedes ML350
Using an ML320 intake and injectors on this 3.7L swap is now starting to look more tempting. At least the factory ECU can technically compensate for the increase in flow rate to 19lbs but not 21lbs.
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
*2.8l & 3.2l both using the same injectors, (17lbs = 178.7cc)
OEM #: "112 078 01 49"
Bosch #: "0280 156 014"
*3.7l using the same injectors with early M113, (18.75lbs = 197.1cc)
OEM #: "113 078 02 49"
Bosch #: "0280 156 016"
http://users.erols.com/srweiss/tableifc.htm
* all M112 sharing the same intake, (2.4l /2.8l /3.2l /3.7l), no any increase noticed with 3.7l...!!
ZAYED,,
OEM #: "112 078 01 49"
Bosch #: "0280 156 014"
*3.7l using the same injectors with early M113, (18.75lbs = 197.1cc)
OEM #: "113 078 02 49"
Bosch #: "0280 156 016"
http://users.erols.com/srweiss/tableifc.htm
* all M112 sharing the same intake, (2.4l /2.8l /3.2l /3.7l), no any increase noticed with 3.7l...!!
ZAYED,,
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
http://www.eurocharged.com/
ZAYED,,
