The new project
Junior Member
Joined: Mar 2009
Posts: 36
Likes: 0
Mercedes-Benz W203 C230k
Looked throug the thread once again and decided to reveal a secret about our power plant. As you know, we're using a w210 e55 engine, but we are aiming at 450+ bhp. You might wonder, how we are going to achieve these figures
a turbocharger? Maybe a supercharger? Nope
as long as we are fond of pure power and immediate throttle response, let alone the reliability, we decided to modify the intake, exhaust system, cooling and lubrication systems and fit the engine with a new ECU. So we polished the intake channels to improve their geometry and increase the air flow. Then we threw away the oem intake manifold and fitted the headers with independent throttle bodies, which we borrowed from the e34 m5 (unfortunately, we were not able to sort it out without bmw). More news and pics are comming.)
a turbocharger? Maybe a supercharger? Nope as long as we are fond of pure power and immediate throttle response, let alone the reliability, we decided to modify the intake, exhaust system, cooling and lubrication systems and fit the engine with a new ECU. So we polished the intake channels to improve their geometry and increase the air flow. Then we threw away the oem intake manifold and fitted the headers with independent throttle bodies, which we borrowed from the e34 m5 (unfortunately, we were not able to sort it out without bmw). More news and pics are comming.)
Junior Member
Joined: Dec 2004
Posts: 35
Likes: 0
Looked throug the thread once again and decided to reveal a secret about our power plant. As you know, we're using a w210 e55 engine, but we are aiming at 450+ bhp. You might wonder, how we are going to achieve these figures a turbocharger? Maybe a supercharger? Nope as long as we are fond of pure power and immediate throttle response, let alone the reliability, we decided to modify the intake, exhaust system, cooling and lubrication systems and fit the engine with a new ECU. So we polished the intake channels to improve their geometry and increase the air flow. Then we threw away the oem intake manifold and fitted the headers with independent throttle bodies, which we borrowed from the e34 m5 (unfortunately, we were not able to sort it out without bmw). More news and pics are comming.)
a turbocharger? Maybe a supercharger? Nope as long as we are fond of pure power and immediate throttle response, let alone the reliability, we decided to modify the intake, exhaust system, cooling and lubrication systems and fit the engine with a new ECU. So we polished the intake channels to improve their geometry and increase the air flow. Then we threw away the oem intake manifold and fitted the headers with independent throttle bodies, which we borrowed from the e34 m5 (unfortunately, we were not able to sort it out without bmw). More news and pics are comming.)So the gearbox is indeed a petrol W203 box,I bought one last month with the hope it will bolt directly to the M113,the bell housings look very close...please share what changes you made ...was it just locating pins,or was there more?
Cheers,
Paul
Junior Member
Joined: Mar 2009
Posts: 36
Likes: 0
Mercedes-Benz W203 C230k
23K, the biggest problem we faced was the overall length of the drive shaft. It turned out to be half an inch shorter than we expected.. that's all I can tell you..) After we solved that porblem it became as easy as locating pins
check out ITBs and clutch vs release bearing!)
check out ITBs and clutch vs release bearing!)
Junior Member
Joined: Mar 2009
Posts: 36
Likes: 0
Mercedes-Benz W203 C230k
Oem flywheel is dual mass obviously, but we decided to make a lighter single mass version, because we're sticking to the racing ideology. Besides, the clutch is a w204 unit, which means that it is bigger in diameter and has different fitment.) In short, we decided that 203 petrol manual gearbox swap without adaptor plate is not much easier than 203 diesel gearbox swap with it.
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
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Junior Member
Joined: Mar 2009
Posts: 36
Likes: 0
Mercedes-Benz W203 C230k
I got it!) Well, I'm affraid, there won't be any pictures of the process..) you see, every single part that is more complicated than an ash tray has to be manufactured on a military plant in this country
Junior Member
Joined: Dec 2004
Posts: 35
Likes: 0
Must be Russia!
Do you think the 203 gearbox will endure the hammering a 450hp V8 will give it? I get the feeling it would last a while on a street car but im not so sure on a track?
Will be interesting to see how you mount the gearshift leaver and how much room you have it the tunnel or if you have to modify the tunnel,the 5-speed in the 202 uses a drag link off to one side of the drive shaft,where as the 6-speed is central above it.
Do you think the 203 gearbox will endure the hammering a 450hp V8 will give it?
I get the feeling it would last a while on a street car but im not so sure on a track?Will be interesting to see how you mount the gearshift leaver and how much room you have it the tunnel or if you have to modify the tunnel,the 5-speed in the 202 uses a drag link off to one side of the drive shaft,where as the 6-speed is central above it.
MBWorld Fanatic!
Joined: Apr 2010
Posts: 4,437
Likes: 43
From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
The detail that has gone into this project is astounding 
I am literally on the edge of my seat every time I read this thread
KEEP UP THE GOOD WORK AND KEEP US POSTED!!!!!
I am literally on the edge of my seat every time I read this thread KEEP UP THE GOOD WORK AND KEEP US POSTED!!!!!
Junior Member
Joined: Mar 2009
Posts: 36
Likes: 0
Mercedes-Benz W203 C230k
We found out that the two above mentioned gearboxes are almost identical. The difference is clutch unit and release bearing. If the diesel gearbox deals with 600Nm (must be around 500lb/ft) of torque, we think that the petrol gearbox must last at least 5-6 months. That's the term I can live with. Speaking about the tunnel, we've replaced the tunnel with the one from 210 E55, so don't worry
MBWorld Fanatic!
Joined: Apr 2010
Posts: 4,437
Likes: 43
From: PDX
1999 C43, 2008 P30 E63, 2014 SQ5, 2024 Model Y Performance
We found out that the two above mentioned gearboxes are almost identical. The difference is clutch unit and release bearing. If the diesel gearbox deals with 600Nm (must be around 500lb/ft) of torque, we think that the petrol gearbox must last at least 5-6 months. That's the term I can live with. Speaking about the tunnel, we've replaced the tunnel with the one from 210 E55, so don't worry
Super Member
Joined: Nov 2004
Posts: 527
Likes: 1
From: South Florida
'10 Panamera S, '06 AMG CLS55, '07 Miata MX5, '02 MB SPRINTER, '99 Spec Miata Race Car (2X)
HItch and Aruss
its guys like you that make the internet and forums like these so powerful. Thank you for sharing your journey with us in such a detailed manner. You have enriched our community and we are forever in your debt. Cannot wait to see where this going!
its guys like you that make the internet and forums like these so powerful. Thank you for sharing your journey with us in such a detailed manner. You have enriched our community and we are forever in your debt. Cannot wait to see where this going!
Junior Member
Joined: Mar 2009
Posts: 36
Likes: 0
Mercedes-Benz W203 C230k
very glad to hear (read) this, mate!) Me personally, I hope that we'll have the car running by the end of may. So you will see where this is going very soon! But, truth be told, it not us that are pushing the whole process forward.. It's our close friends who are in charge of all this magnificence - medvedeff and max
by the way, the t-shirt says:"Now that's the level, bro!"
by the way, the t-shirt says:"Now that's the level, bro!"
Super Member
Joined: Nov 2004
Posts: 527
Likes: 1
From: South Florida
'10 Panamera S, '06 AMG CLS55, '07 Miata MX5, '02 MB SPRINTER, '99 Spec Miata Race Car (2X)
Hitch - with the head work you have done, did you do a flow test before and after? Curious to know if there were any real gains to be made in the combustion chamber.
Junior Member
Joined: Mar 2009
Posts: 36
Likes: 0
Mercedes-Benz W203 C230k
siswati, I'm afraid we didn't. But I can assure you that there's a lot to be made. Our engineer has increased the channels by 4mm each and modified the geometry of air flow.
Phil W, we use a petrol gearbox, but we think that a diesel gearbox from w211 e320 cdi with an adapter plate would feat nicely.
Phil W, we use a petrol gearbox, but we think that a diesel gearbox from w211 e320 cdi with an adapter plate would feat nicely.
Member
Joined: Sep 2009
Posts: 134
Likes: 0
From: Germany, Neuburg
C32 AMG
I like it very much that someone such a conversion carried out and describes the pic as well with so many great.
my respect for the project you have! It is certainly not easy to make something like that, but as one of the images and the descriptions provides everything by hand and foot.
keep it up, and keep us going on, with images and text.
Now you use a gearbox from a c320 or c240? do you think this keeps gear?
I have long thought about to use a gear from a c320 to build it in my c32, but failed in the end it on the infos. It would fit for sure, but I could instantly find no clutch, which transmits power safely.
and above all the gear itself worries me, although I very rarely drive the vehicle on race tracks, I want to be free from ulterior motives can drive it.
my respect for the project you have! It is certainly not easy to make something like that, but as one of the images and the descriptions provides everything by hand and foot.
keep it up, and keep us going on, with images and text.
Now you use a gearbox from a c320 or c240? do you think this keeps gear?
I have long thought about to use a gear from a c320 to build it in my c32, but failed in the end it on the infos. It would fit for sure, but I could instantly find no clutch, which transmits power safely.
and above all the gear itself worries me, although I very rarely drive the vehicle on race tracks, I want to be free from ulterior motives can drive it.
