Installing Turbo on NA M276?
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Joined: Jul 2023
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From: West Coast US
E350 (W212)
Installing Turbo on NA M276?
Hello my friends at MBWorld,
I recently was looking into the engines in the W212 (2014/2015) E-Class engines, the E350, E400, and E550 engines. They are all M276 engines, but the E350 lacks the biturbo, these being basically the same engines, doesn't it mean that the M276 is very easy to install a turbo in? If so, what kinds of limits to turbo size/boost pressure are best to abide by? Are there any turbo kits out there made for the W212 E350?
I recently was looking into the engines in the W212 (2014/2015) E-Class engines, the E350, E400, and E550 engines. They are all M276 engines, but the E350 lacks the biturbo, these being basically the same engines, doesn't it mean that the M276 is very easy to install a turbo in? If so, what kinds of limits to turbo size/boost pressure are best to abide by? Are there any turbo kits out there made for the W212 E350?
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Joined: May 2021
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From: US
2008 E350, 2012 ML350, 2014 E350, 2015 ML350
Hello my friends at MBWorld,
I recently was looking into the engines in the W212 (2014/2015) E-Class engines, the E350, E400, and E550 engines. They are all M276 engines, but the E350 lacks the biturbo, these being basically the same engines, doesn't it mean that the M276 is very easy to install a turbo in? If so, what kinds of limits to turbo size/boost pressure are best to abide by? Are there any turbo kits out there made for the W212 E350?
I recently was looking into the engines in the W212 (2014/2015) E-Class engines, the E350, E400, and E550 engines. They are all M276 engines, but the E350 lacks the biturbo, these being basically the same engines, doesn't it mean that the M276 is very easy to install a turbo in? If so, what kinds of limits to turbo size/boost pressure are best to abide by? Are there any turbo kits out there made for the W212 E350?
1 - E350 -> M276 3.5L
2 - E400 -> M276 3.0L quite different intake than the E350
3 - E550 -> M278 (not M276)
By reading all the issues with tuning even the stock engines, attempting to upgrade the NA -> Turbo version will be costly and painful to tune properly. It will be a great enthusiast project to stay busy, but to get it optimal, it will take time and $$$
You could give a shout to the existing 3rd party tuners, and see what they recommend and if they have done it already. If so, it will save you a lot of time. For example, https://www.torquecars.com/mercedes/m276-tuning.php
Last edited by JCM_MB; Aug 25, 2023 at 03:15 PM.
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Joined: Sep 2024
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Hello my friends at MBWorld,
I recently was looking into the engines in the W212 (2014/2015) E-Class engines, the E350, E400, and E550 engines. They are all M276 engines, but the E350 lacks the biturbo, these being basically the same engines, doesn't it mean that the M276 is very easy to install a turbo in? If so, what kinds of limits to turbo size/boost pressure are best to abide by? Are there any turbo kits out there made for the W212 E350?
I recently was looking into the engines in the W212 (2014/2015) E-Class engines, the E350, E400, and E550 engines. They are all M276 engines, but the E350 lacks the biturbo, these being basically the same engines, doesn't it mean that the M276 is very easy to install a turbo in? If so, what kinds of limits to turbo size/boost pressure are best to abide by? Are there any turbo kits out there made for the W212 E350?
I would not attempt to turbocharge a m276 de35 and expect it to run on pump gas. The compression ratio is 12.2:1 as compared to the turbocharged version which is like 10.6:1. The lower compression ratio allows for more boost at the given octane rating without having detonation issues. Turbocharging your e350 may be possible but with factory fuel and internals you would be running less than 5 psi. The short answer is that I wouldn’t. There aren’t kits available because it’s not a commonly done thing for that reason.
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Joined: Dec 2019
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I would not attempt to turbocharge a m276 de35 and expect it to run on pump gas. The compression ratio is 12.2:1 as compared to the turbocharged version which is like 10.6:1. The lower compression ratio allows for more boost at the given octane rating without having detonation issues. Turbocharging your e350 may be possible but with factory fuel and internals you would be running less than 5 psi. The short answer is that I wouldn’t. There aren’t kits available because it’s not a commonly done thing for that reason.
It is not sold in North America, if OP really wants to install turbo on the 3.5L, could probably look at the differences between the 3.5L turbo and the 3.0 turbo and see what was changed.
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Thanks for posting the information, if wikipedia isn't correct, hopefully the sources/references at the bottom that it is based on/cited is accurate.
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Joined: Sep 2015
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From: Chicago area
2015 E400 and 2015 GLK350
Well, I'd say that in the US, that info is NOT correct. My 2015 E400 4Matic sedan is most definitely the M276DELA30, or the 3.0l V6 engine.
I bought it new, and all documentation indicates 3.0l engine.
Now I do not know the situation for vehicles produced for and sold in other parts of the world.
I bought it new, and all documentation indicates 3.0l engine.
Now I do not know the situation for vehicles produced for and sold in other parts of the world.
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Joined: Nov 2016
Posts: 7,847
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From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
For some reason, I think the DE35 LA was produced for the Asian market. There's a post somewhere where a guy with that engine asked a question. Can't remember who it was or what the question was.
Joined: Nov 2016
Posts: 7,847
Likes: 3,498
From: Maryland
2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
