M113K Heads on M113 NA Motor
Thread Starter
Senior Member
Joined: Oct 2011
Posts: 320
Likes: 185
From: Philadelphia
2002 CLK55 AMG: 2004 S55 AMG: 2009 C63
M113K Heads on M113 NA Motor
Has anyone tried this, or know if it will work? I tried to do some research but i haven't found anything on the forums.
It looks like the exhaust ports on the 113k heads are a little over 3mm larger. I understand its a ton of work for such a little gain, but i'm thinking if you do cams at the same time it may be worth it.
It looks like the exhaust ports on the 113k heads are a little over 3mm larger. I understand its a ton of work for such a little gain, but i'm thinking if you do cams at the same time it may be worth it.
Member
Joined: Jun 2018
Posts: 249
Likes: 44
From: San Antonio, TX
2005 C55 AMG
I wouldn't - you'll LOSE power unless you add the supercharger or some other form of forced induction. I'm not sure the cams are any different.
The M113k engine from what I recall also has beefier internals (forged pistons/rods, etc), so there's that too...
The M113k engine from what I recall also has beefier internals (forged pistons/rods, etc), so there's that too...
Last edited by Spooky55; Nov 16, 2021 at 12:58 AM.
just go all the way to m113k engine, with msc headers you will be making ton of power. i have kleemann cams that i'm selling if you want even more 
i kept my car NA and did everything that can be possibly done without going too crazy and i'm just around 375hp to the wheels(p&p heads, enlarged TB and intake manifold inlets, 2.5 dual exhaust with msc headers, more aggressive cams from w203/w209 amg, and some other tiny changes). with m113k engine in the w208 you will be putting down closer to 400hp with a fraction of cost and better all around engine. just my advice, that seems to be the best mod to do for our cars.
i kept my car NA and did everything that can be possibly done without going too crazy and i'm just around 375hp to the wheels(p&p heads, enlarged TB and intake manifold inlets, 2.5 dual exhaust with msc headers, more aggressive cams from w203/w209 amg, and some other tiny changes). with m113k engine in the w208 you will be putting down closer to 400hp with a fraction of cost and better all around engine. just my advice, that seems to be the best mod to do for our cars.
Last edited by Quant; Dec 2, 2021 at 07:50 AM.
MBWorld Fanatic!
Joined: Oct 2012
Posts: 1,427
Likes: 100
From: Florida
2002 CLK 55 AMG cabriolet Eurocharged
It is true the NA heads are more desirable for performance.The M113k cams are specifically machined to each head as well. It is not recommended to swap cams on the K heads without some careful measurements.
The NA heads flow better on the intake side according to some of the W211 folks who get wild with mods.
The K engine has lighter pistons heavier rods and custom flywheel and balancer.. The K heads will bolt on and have no EGR port on the passenger head.
Hope this helps a bit any feedback welcome.
Good luck with your build.
Best, Gator
The NA heads flow better on the intake side according to some of the W211 folks who get wild with mods.
The K engine has lighter pistons heavier rods and custom flywheel and balancer.. The K heads will bolt on and have no EGR port on the passenger head.
Hope this helps a bit any feedback welcome.
Good luck with your build.
Best, Gator
Trending Topics
Junior Member
Joined: May 2020
Posts: 54
Likes: 5
2004 W211 e55 amg / 2003 w163 ml500
2000 ml55 heads or cams on 2003 ml500 motor
just go all the way to m113k engine, with msc headers you will be making ton of power. i have kleemann cams that i'm selling if you want even more
i kept my car NA and did everything that can be possibly done without going too crazy and i'm just around 375hp to the wheels(p&p heads, enlarged TB and intake manifold inlets, 2.5 dual exhaust with msc headers, more aggressive cams from w203/w209 amg, and some other tiny changes). with m113k engine in the w208 you will be putting down closer to 400hp with a fraction of cost and better all around engine. just my advice, that seems to be the best mod to do for our cars.
i kept my car NA and did everything that can be possibly done without going too crazy and i'm just around 375hp to the wheels(p&p heads, enlarged TB and intake manifold inlets, 2.5 dual exhaust with msc headers, more aggressive cams from w203/w209 amg, and some other tiny changes). with m113k engine in the w208 you will be putting down closer to 400hp with a fraction of cost and better all around engine. just my advice, that seems to be the best mod to do for our cars.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
