C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

C240 to 3.2 engine swap anyone done this?

Old Jun 18, 2009 | 04:40 AM
  #26  
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Star what were the differences between the two engines, I know the only specific difference is the increase in stroke volume? I'm not a mechanic so I don't really have a clue how this would be achieved but if you could really briefly inform me how it would be greatly appreciated, or someone else for that matter?

What other mods did you have to do to achieve proper functioning apart from an ECU reprogram?

Before anyone harps on about me wasting my money, to upgrade to a 320 from a 240 w211 would cost me an additional 10k on top of selling my car, plus 95% of 320s don't have a nav system in them lol, and I really really love my car (I'm sure everyone will understand that one) but it is a tad slow.
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Old Jun 18, 2009 | 05:41 AM
  #27  
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03 c320 coupe
Originally Posted by Scraz51
Star what were the differences between the two engines, I know the only specific difference is the increase in stroke volume? I'm not a mechanic so I don't really have a clue how this would be achieved but if you could really briefly inform me how it would be greatly appreciated, or someone else for that matter?

What other mods did you have to do to achieve proper functioning apart from an ECU reprogram?

Before anyone harps on about me wasting my money, to upgrade to a 320 from a 240 w211 would cost me an additional 10k on top of selling my car, plus 95% of 320s don't have a nav system in them lol, and I really really love my car (I'm sure everyone will understand that one) but it is a tad slow.
the 240 engine IS underpowered.. that is a fact.. some will argue that its more reliable and smoother than the 2.3 kompressor... and others will defend the lighter engine...
i had the 2002 c230k, my body have a 240 and i now i drive the 320... the 320 is simply the best engine in that list...
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Old Jun 18, 2009 | 07:31 AM
  #28  
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Originally Posted by HellsAngel
the 240 engine IS underpowered.. that is a fact.. some will argue that its more reliable and smoother than the 2.3 kompressor... and others will defend the lighter engine...
i had the 2002 c230k, my body have a 240 and i now i drive the 320... the 320 is simply the best engine in that list...
+1 on the 320, 3.2 engine is a very strong and well built engine!!!
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Old Jun 18, 2009 | 10:04 AM
  #29  
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2003 E240
Originally Posted by BigBodyBenzC240
+1 on the 320, 3.2 engine is a very strong and well built engine!!!
Haha that is why I want one, how could I increase stroke volume of the engine?

Any good sites to link?
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Old Jun 18, 2009 | 10:19 AM
  #30  
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Originally Posted by HellsAngel
the 320 is simply the best engine in that list...
Hmmm - some of us would disagree with that.

Cool to see someone trying something different. I'm surprised it was such an easy swap for a Benz.
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Old Jun 18, 2009 | 10:37 AM
  #31  
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+1 - What the european press had to say about the w203 range. I personally think both are fine

JD Power stars: 4
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Best Models: C240 Elegance, C270 CDI Elegance
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Old Jun 18, 2009 | 11:48 AM
  #32  
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Originally Posted by Scraz51
.... how could I increase stroke volume of the engine? ...
New crankshaft. Star-Garage has the right approach, get an engine from a wrecked car (many MB models use the 320 engine). Replacing the crankshaft is probably the most difficult thing you could do in a motor.
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Old Jun 18, 2009 | 01:06 PM
  #33  
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Originally Posted by Glyn M Ruck
+1 - What the european press had to say about the w203 range. I personally think both are fine

JD Power stars: 4
NCAP: 5
Best Models: C240 Elegance, C270 CDI Elegance
Worst Models: C320
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its normal.. i live in france most of the time & i know how they think.. here they dont have a topgear equivalent.. the motor shows review only small cars, small engines... so when it comes to merc, its the 180, the 200, the 270 CDI... most of the cars produce less than 150hp... but thats not a problem for them as long as its doing 40mpg... thats a problem to me....
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Old Jun 18, 2009 | 03:57 PM
  #34  
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This was the British Press. Top Gear is a highly entertaining program but technically extremely poor. Clarkson's attitude has always been " Why spoil a good story with the facts"
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Old Jun 18, 2009 | 04:33 PM
  #35  
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Originally Posted by Glyn M Ruck
This was the British Press. Top Gear is a highly entertaining program but technically extremely poor. Clarkson's attitude has always been " Why spoil a good story with the facts"
im not defending top gear, its an entertaining show not a "factual" show...
my idea was a motor show testing luxury cars, super cars & BIG engines... nthn like that in here.. they dont care about big engines in europe...( as long as its not an entertaining show).. its mpg, and lower tax because of low co2 emissions and stuff like that... you'd be amazed by the number of people willing to spend more to be greener...
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Old Jun 18, 2009 | 05:38 PM
  #36  
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Originally Posted by mleskovar
New crankshaft. Star-Garage has the right approach, get an engine from a wrecked car (many MB models use the 320 engine). Replacing the crankshaft is probably the most difficult thing you could do in a motor.
+1 - That's exactly what I would do. I could not care 320 vs 240. Either would do. The reason I like the 2.6 V6 is it is the most free revving of the lot & if you rev it it's performance is fine at coast. At high altitude I would go for the 320 every time.

It's how engines produce their power. I like revving engines & the 240 power curve looks like this. If you want stump pulling torque at low RPM then the 2.6 is not for you.

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Old Jun 18, 2009 | 06:10 PM
  #37  
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From: Llandudno, Cape Town, South Africa
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Originally Posted by HellsAngel
im not defending top gear, its an entertaining show not a "factual" show...
my idea was a motor show testing luxury cars, super cars & BIG engines... nthn like that in here.. they dont care about big engines in europe...( as long as its not an entertaining show).. its mpg, and lower tax because of low co2 emissions and stuff like that... you'd be amazed by the number of people willing to spend more to be greener...
Understood - That's why SA is now the 4th largest market in the world for AMG
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Old Jun 18, 2009 | 08:07 PM
  #38  
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E55(210) CL600(140) C320(203) E350 Saks 5th ave. add.(211)
Crankshaft, rods, pistons and camshafts. Easier and cheeper to buy a used 320 motor and swap over as necessary. Only problem is the car we worked on was 2002 so no SCN coding but yours will. I'm sure the engine comp. Can be set up for it but it will be much more of a challange. I plan to do some experimenting with SCN coding soon so I ready for things like this in the future.
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Old Jun 19, 2009 | 04:46 AM
  #39  
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Thanks for that star +1 much appreciated.
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Old Jun 19, 2009 | 11:12 AM
  #40  
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Originally Posted by Glyn M Ruck
Understood - That's why SA is now the 4th largest market in the world for AMG
what about the middle east ?
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Old Jun 19, 2009 | 11:34 AM
  #41  
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They are probably 2nd - I'm not sure. The MD of AMG Div here announced a month back that SA was No 4 - He did not give the others.
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Old Jul 7, 2009 | 10:41 PM
  #42  
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Seems like this thread is heading in the direction I was considering, so thanks guys!

I'm picking up a 2003 C230k on Thursday. I definitely enjoy the car, but the ultimate goal is to get the engine up to about 450 rwhp. The 1.8 can't do that, so I've been kicking around options like:

1) keep the body I'm picking up tomorrow, but swap in an s/c m112. Doing this will cause all kinds of transmission problems (it must be manual, no autos!) and fit issues with the ecu,

2)Drive it around for a few years, then actually buy c55 m113 and add a supercharger to it from renntech. Option 2 is much more money, but better payout with respect to power gains.


The basic issue is that I need to learn a lot more about what's available for MB tuners, but I want something fast and unique.
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Old Jul 8, 2009 | 01:00 AM
  #43  
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Originally Posted by saespyder
Seems like this thread is heading in the direction I was considering, so thanks guys!

I'm picking up a 2003 C230k on Thursday. I definitely enjoy the car, but the ultimate goal is to get the engine up to about 450 rwhp. The 1.8 can't do that, so I've been kicking around options like:

1) keep the body I'm picking up tomorrow, but swap in an s/c m112. Doing this will cause all kinds of transmission problems (it must be manual, no autos!) and fit issues with the ecu,

2)Drive it around for a few years, then actually buy c55 m113 and add a supercharger to it from renntech. Option 2 is much more money, but better payout with respect to power gains.


The basic issue is that I need to learn a lot more about what's available for MB tuners, but I want something fast and unique.
BETTER idea. buy a C55 and supercharge it. OR buy an E55.
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Old Oct 8, 2013 | 11:02 PM
  #44  
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Swap 1997 C280 to 2001 C320

I have a 1997 c280 which got in accident, but the engine is still good - under 100K was wondering if this could be put into a 2001 C320 which has transmission problems. Since the C320 is problematic we were wondering if the C280 could be swaped in to it?
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Old Oct 10, 2013 | 03:12 PM
  #45  
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For the record, the M113k from the C55 will not fit into any C-class that is NOT a C55. The C55 has the same front end from the CLK because the original C-class front end isn't big enough to fit the V8.

Originally Posted by dbs.novice
I have a 1997 c280 which got in accident, but the engine is still good - under 100K was wondering if this could be put into a 2001 C320 which has transmission problems. Since the C320 is problematic we were wondering if the C280 could be swaped in to it?
Well, swapping the engine in won't fix the transmission problem, if that's what you're looking for.

Also it will be a very difficult swap. The C280 uses the M104 engine, and the C320 uses the M112 engine. The M104 is a straight 6, while the M112 is a V6. All sensors are different, SAMs are different, the computer is completely different. Hell, I don't even know if the M104 computer could be re-mapped to run efficiently with the M112. I wouldn't consider the swap.
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Old Oct 10, 2013 | 05:24 PM
  #46  
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Originally Posted by Alswag
For the record, the M113k from the C55 will not fit into any C-class that is NOT a C55. The C55 has the same front end from the CLK because the original C-class front end isn't big enough to fit the V8.



Well, swapping the engine in won't fix the transmission problem, if that's what you're looking for.

Also it will be a very difficult swap. The C280 uses the M104 engine, and the C320 uses the M112 engine. The M104 is a straight 6, while the M112 is a V6. All sensors are different, SAMs are different, the computer is completely different. Hell, I don't even know if the M104 computer could be re-mapped to run efficiently with the M112. I wouldn't consider the swap.
Can you swap the transmission at least?
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Old Dec 23, 2014 | 02:53 PM
  #47  
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E240
Swopped E240 to E320

Hi guys, I bought a E240 with a ruined engine. So what I did is I got a sub assembly for E320(was only size that was available, not that im complaining). I build everything over from the 240 to the 320 enginge. Tomorrow I am going to fit the engine. But i am terribly worried about the ECU and the compatability. I see that some of you said you have done it. So what can i expect and what should i do regarding the computer box.
Thanks
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Old Jun 9, 2015 | 02:47 AM
  #48  
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c240
how to change ecu from e26 to e32

Hello star garage,
Late in the day I know..
How did you manage to change the ecu coding? I tried to do so but kept getting e26 on the dyno screen.

Help wold be much appreciated.

Thx
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Old Jun 11, 2015 | 08:04 PM
  #49  
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c320/2001
Does anyone have the ECU pinout for MB c320 2001 A0305455832
Does anyone can save my life with this favor?
Thank you in advance
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Old Jul 21, 2019 | 04:31 AM
  #50  
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01 Mercedes c240
Originally Posted by Star-Garage
Problem solved! I checked the EPC again and found the C240 and C320 use the same part # ME control unit. Tonight I waited till we closed the shop, shut the phone off and sat in the car with the SDS on my lap for about an hour. I found some descrete coding that allowed me to change the ME from E26 to E32. Took it around the block a few times and it's perfect!
So, it's a cool way to really upgrade a C240 if the engine is to be replaced.

I'm thinking about doing the same with mine. So what else did you need to swap over besides the engine?
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