World's First rear mount turbo M275 V12 - 2003 Mercedes Benz CL600

Updated: 12 Mar 2018

850+ hours of work, several broken knuckles, and one crazy idea.

UPDATE completed a 5,700 mile trip across America and back in 11 days
https://www.youtube.com/watch?v=-99JuvriTnc

Projects and Modifications - in data logging / early tuning stages

More build photos on my IG : ConeKillerAUTOx (and no - I don’t auto cross this car haha)

Suspension / Braking / Wheels
• Removed ABC system
• Removed ABC control unit
• Removed stock ABC/Power steering pump
• ABC System Deletion
• ABC Pump Deletion
• Power steering pump conversion to w220 non ABC
• Coilover Suspension Conversion (Eibach)
• 18” Lightweight MB 5 spoke rims
• 18” TOYO R888 Tires (275 rear / 255 front)
• EuroParts/Mercedes lower and upper control arms
• Brembo upgraded rotors throughout
• Brembo 4/6 pot calipers

Ignition / Electronics / Computer Management
• Mercedes Benz Coil Packs
• ECS Mercedes Benz Ignition Control Module
• 24set of step 7 cold NGK Plugs
• Mercedes Benz gas pedal with new pedal sensor
• ABS sensors throughout
• ECS Transmission conductor plate (3x)
• ECS Transmission wiring harness
• Eurocharged Transmission Control Module
• Eurocharged ECU Tuning
• Glowshift gauges (wideband A/F, boost, oil temp, 2x oil pressure, nitrous pressure, fuel pressure)
• GReddy Spec ii electronic boost controller
• Remote mount Whistler 360 radar detector
• Rewired all stock sensors (MAP, temp, pressure, etc)

Engine / Cooling / Turbo / Transmission
• Removed stock turbos
• Removed stock exhaust / stock turbo manifolds
• Cut and capped existing oil feed / return lines
• Looped stock turbo water feed/return lines
• Removed washer fluid Reservoir
• Removed heating lines to washer fluid
• Removed stock steering wheel
• Removed stock heat exchanger
• Separate coolant reservoir/system for intercoolers
• 2x Electronic fans for heat exchanger
• 2x Bosch water pumps for intercooler circulation
• Custom Water-to-Air Intercooler
• Water ICE tank
• Water lines to and from backseat/engine bay
• Mercedes 2000-2002 non turbo exhaust manifolds
• Nitrous Express 10Lb - 125 shot (wet-shot) system
• Nitrous Express Purge system
• Massive front mount heat exchanger
• Borg Warner rear mount S400 series turbo
o Compressor Wheel: 74.5mm / 101.45mm - 95lbs/min
o Turbine Wheel: 78mm x 87mm
o Compressor Inlet: 5”
o Compressor Outlet: 4”
o Turbine inlet: 0.90 Divided T4
o Turbine Outlet: 4”
• 2x TurboWerx Oil pumps (1 scavenge / 1 feed)
• 5 QT remote standalone oil reservoir for turbo only
• Oil feed/return lines + Front mount oil cooler
• Mobile1 Full Synthetic 0W-40 throughout
• Replaced all stock vacuum lines
• TiAL Sport 50mm MV-R Wastegate
• TiAL Sport 50mm Blow Off Valves X2
• GReddy Electronic Boost Control Valve Spec ii
• SLR Mercedes McLaren 722.6 Solenoid/spring upgrade kit (used a few parts from it)

Comments

Quite the extensive mod list there, do you race it at all?

thanks yeah it needed a lot of repairs just to drive it its first year (2 summers ago) and now its almost completely different than it was then for the better. I drag raced it last year on the old stock twin turbo setup (great 60 foot..horrible on top end with the stock small turbos) Will be looking to set some records this fall at the strip and I will be road racing it a few times throughout the summer as well as a cross country Rt66 rally

That thing is f*cking BUILT.

Damn, that is one hell of a ride man!

Hows the lag on it?

off the line 1st is a bit laggy due to the weight of the car (4300 ish) but with a 125 shot of nitrous off the line its like no lag exists. I plan on launching in boost once its all finalized and I get a better transmission/mechanical diff next year (when I have the money and time to do the work too)

That is one hell of a badass Benz.

Thank you!

Man… This is absolutely the type of builds that i love ! All functional built and for me at the same beatiful ! It’s built just to be a street slayer or for roll/drag :D ?

Thank you man! It is meant to be a street slayer and a drag racer. I still even daily it to work when I can because its built to drive not to be a collection item haha. Currently set up suspension for drag but its functioning great at road tracks and will be what I use to go cross country in August.

Woah

S I C K

Thank you!

Too good ! If i can take you a suggestion i don’t see any type of thermal wrap on the exhaust … And for what i know thermal wrap on a so long exhaust manifold it’s almost vital, and i know they’re expensive but can be worth the cash ;) less lag and more power! Anyway have fun with your monster ! :D

Thank you sir! Oh it is there on the hot side of the exhaust! haha double wrapped and nearly triple wrapped towards the front of the car. You are absolutely correct as you want the rear mounts to not loose any heat if possible.