|Tommy Johnson started Race 1 P6 and gained one position before driver change.|
May 15, 2023
RENNtech Motorsports scores first Podium of the Season
May 9, 2023
RENNtech Open Garage
On the 22nd of April, we hosted our second Open Garage event. We extended an invitation to our friends, family, and esteemed customers to participate in a unique and engaging experience. The event provided an opportunity to dive into the technical aspects of our projects, while indulging in delicious snacks and refreshing drinks provided by Celsius and Muscle Vodka and the life size Eurosim F1 simulator.
Public events are a part of car culture, and RENNtech company has participated in dozens of shows, events, and happenings over the past year. As we opened our doors to allow visitors to witness our operations up close, our engineers, techs, and product specialists were available to chat and offer insights into the day-to-day workings of our business. Attendees were able to witness our tuning processes with a Ferrari F488 Spider on the dyno, followed by a TechTalk presentation on the performance development of the AMG GT and GT63 models.
The event was a great success, and we received positive feedback from attendees. We would like to thank everyone who attended, and we look forward to welcoming you to our next Open Garage event.
April 11, 2023
Pirelli GT4 America
SONOMA 2023 Wrap Up
The weekend started off with practice sessions, where both drivers had a chance to show their potential and posting an impressive lap time of 1:49:781 in the second session. The team's engineers worked hard to fine-tune the car for the qualifying rounds where Tommy Johnson posted a 1:48:258 lap time good enough for P26 overall in a grid of 43 cars.
Race 2 brought the same intensity to the track. Starting from P36 overall Michael Auriemma drove a clean first stint, handing over the reins to Tommy Johnson midway of the race. After a crash brought on a full course yellow at the final minutes of the race, Tommy Johnson secured a P6 in class.
The team and drivers showed their ability to compete at the highest level, with the MB Gram RENNtech Motorsports #89 AMG GT4 proving to be very quick on the grid. The team's engineers and mechanics also demonstrated their skills, keeping the car running smoothly throughout the weekend.
In conclusion, the opening of the Pirelli GT4 America series
at the Sonoma Raceway was a thrilling event, showcasing the growing popularity
of GT -racing in America. The RENNtech team put up a strong performance in this
very demanding race. Each race is a great experience which helps us get even
stronger. We can't wait for the next heat at NOLA Motorsports Park, April 29 –
April 4, 2023
Project G - RENNtech Classic Performance
Classic restoration is becoming a significant part of RENNtech’s craft. The iconic G Wagen, in particular, holds a special place in the heritage of Mercedes-Benz. What you see is 1993 Mercedes-Benz G Class X461; a military vehicle that served for the Swiss Army.
In 2018, a client of ours imported this vehicle from the Netherlands, where it had undergone partial restoration and repaint in classic M.B. China Blue (934). Furthermore, the car had been fitted with a range of new components, including suspension, top, and a set of wheels, to bolster its aesthetic appeal.
Built for military purpose and off road travel, the Gelande Wagen (German terminology for G Wagen), was in a good shape but was severely underpowered for modern daily driving. Dyno tested at RENNtech, the 2.3-liter 4-cylinder M102 produced 70 WHP which good for traversing backroads of the Austrian alps, but not enough accelerate and keep up with South Florida highway traffic, so the owner turned to us create something more powerful for enjoyable and safe daily driving.
Being familiar with improving the performance and driving characteristics of G Class, we chose the rock-solid M.B. 5.5 liter M113 V8 -engine with 350 HP, and matching it to a 722.6 G 5 speed automatic for modern day performance.
The military purpose truck base is much different from road going
vehicles, and the “little blue truck” will need several updates and
modifications to fit the new powerplant and drivetrain, before the focus can
shift to the development of a bespoke interior tailored to this vehicle.
|Removing the original 2.3-liter 4-cylinder M102|
|Mercedes-AMG M113 5.5 -liter V8|
|G-Wagen ready to receive more power.|
|New motor mounts are part of fitting the V8 in place of the 4 -cylinder.|
February 15, 2023
RENNtech Power Module for Range Rover
The most recent addition to the list of RENNtech tuned vehicles is the 2023 Land
Rover Range Rover. Powered by a 4.4 liter Twin Turbo V8 the factory published
power figures are 523 HP and 553 LB FT of torque. Tested on the DYNO at
RENNtech, the Range Rover produced 588 HP and 650 LT-FT of torque, 65 HP and 97
LB-FT more power than advertised.
The RPM is a “piggy-back” style ECU upgrade designed to pull additional power from the engine by adjusting fuel-to-air ratio, ignition timing, and throttle mapping through RENNtech’s proprietary software.
With RENNtech’s software, the Range Rover engine produces an
additional +57 HP and 40 LB FT of torque at the crank, delivering a totalof 654 HP and 690 LB-FT of torque!
With tune installed, the Range Rover feels equally smooth as before, but is quicker from the start with a stronger pull at higher speeds. Most noticeable are the pulls between 60 and 130 mph where the 5500+ lbs Range Rover needs it the most.
The RPM is designed for daily driving and comes with RENNtech’s standard 2 year product warranty. Installing the RPM is straightforward and can be done within 2-3 hours by one of RENNtech’s Dealers, or, if mechanically inclined with proper tools the install can be done at home.
The Range Rover sits at the top of the luxury SUV food chain, and with RENNtech’s Power upgrade the Rover inches closer to AMG GLS 63 in performance.
January 24, 2023
2023 Supercar Week
|Supercar Week 2023 West Palm Beach.|
SuperCar Week 2023 was nine days of automotive events hosted throughout Palm Beach County. This year the weeklong series of events culminated at the Grand Finale on the West Palm Beach Waterfront, with over 100,000 enthusiasts gathering to participate in the excitement.
|RENNtech AMG GT Development Vehicle.|
RENNtech showed up in force, staking a claim on the lawn for modern and classics Mercedes-Benz and a selection of pre-merger AMG’s. Visitors got up close and personal with RENNtech Development Vehicles, the AMG GT and CLS 53 AMG, while our Engineer’s were on hand answering questions and talking cars.
|RENNtech Development Car, CLS 53 AMG.|
The gullwing doors of the SLR McLaren, one in silver and another 722 -version in black, were showstoppers and are destined to draw a crowd anywhere these very special vehicles show up. The SLR “super grand tourers” still look striking among the super and hyper cars of today.
|Mercedes-Benz SLR McLaren 722 edition.|
RENNtech Classics received a great amount of attention and as a result started fascinating conversations between Hartmut Feyhl and visitors. With the growing interest in pre-merger AMG vehicles, RENNtech has become the destination for collectors who are looking to bring back the performance of these iconic machines.
The Originals. Hartmut Feyhl and 1985 Mercedes-Benz 300 E 6.0 AMG "Hammer"
This year we were lucky to bring the original E300 6.0 AMG “Silver Hammer” which was restored and repowered at RENNtech in 2022. The Hammer was flanked by a 560 SEL 6.0 AMG, and a fully restored 560 SEC 6.0 Widebody.
|RENNtech Classics restored 560 SEC 6.0 Widebody|
special vehicles got to share a ride with RENNtech Motorsports #89 MB Gram AMG
GT4 in the Motorsports Team trailer. Part of the Race Village, the AMG GT4 was
resting on the lawn in front of mega yachts enjoying the cool and sunny day
before heading to pre-season testing for the upcoming SRO GT4 America -season.
|RENNtech Motorsports #89 MB Gram AMG GT4 Racecar|
It was a pleasure to exchange views and thoughts with other car enthusiasts, and we are already looking forward to next year!
January 10, 2023
RENNtech x Öhlins: Performance for Mercedes-Benz AMG G -class
- Fitment Mercedes-Benz AMG W463 G-Wagen MY 1990 – 2018
- Öhlins ORQ 16/46 Off-Road technology
- 46mm piston for best performance - comfort and chassis control
- Separate compression and rebound damping adjustment
- Lightweight aluminum construction
- Two way adjustability – compression and rebound damping forces
- Piggy Back reservoir on the cord
- Dust covers
- Works with original springs
- Possible modification of the shock absorber for increased suspension travel
- Corrosion resistance (ISO 9227)
|RENNtech x Öhlins Shock Absorber for Mercedes-Benz G Wagen.|
|Öhlins’ patented STX-technology.|
|Quick two-way adjustability.|
December 27, 2022
RENNtech Testing for 2023 SRO Season at Sebring Raceway.
|RENNtech Motorsports #89 AMG GT4 at Sebring Raceway December, 2022|
With the start of the 2023 SRO Pirelli GT4 America and GT America Powered byAWS -season approaching, RENNtech Motorsports Team completed testing with the RENNtech Motorsports MB Gram #89 AMG GT4 at Sebring Raceway on December 16th, 2022.
Drivers Thomas Johnson and Michael Auriemma used the opportunity to get familiar with the performance and handling of the AMG GT4 -machine, while the team was monitoring performance and working on car set up.
Cool conditions prevailed on track early Friday morning causing a few cars to slip off track and cutting the first session short. As the day got warmer and the drivers were dialed-in to the capabilities of the Mercedes-AMG GT4, lap times kept on improving.
a serious test for both drivers and the car. The uneven surface of Sebring
Raceway is the ideal place for drivers to get familiar with the vehicle on a
track and for the Team to perform a shake-down of the car. Track day testing as
a great opportunity for us to see in which direction are we going before the
upcoming season.” Said Sascha Kempter, RENNtech Motorsports Team Director.
The season opener of the GT America Powered by AWS kicks-off in St. Petersburg, March 3rd, while the SRO Pirelli GT4 America -series will start at Sonoma Raceway, March 30th.
September 20, 2022
30 Years of Power – RENNtech S76R
Powered by a 615 hp, 7.6 -liter M120 V12 engine, the S76R is the most powerful naturally aspirated V12 built by RENNtech and the largest displacement on record for the Mercedes Benz M120.
|2022 RENNtech S76R|
Building the perfect W140.
In 1992 RENNtech turned out the first performance versions of the Mercedes-Benz M120 V12 -engine. Bored and stroked to a displacement of 7.4-liters and with up to 585 hp of power, these super engines found their way to the RENNtech SL 74 (R129), CL 74 (C140), and the S 74 (W140) through the 1990's.
Fast forward 30 years and RENNtech is following the same blueprints from an era of naturally aspirated and over-engineered luxury by turning a 1992 600 SEL into a 2022 RENNtech S76R through a complete restoration, re-power and interior re-fit.
|1997 RENNtech SL 74|
Power: RENNtech bored and stroked the 6.0-liter V12 to an astounding 7.6 -liters, resulting in the largest M120 V12 -engine to date. With the addition of lightweight pistons, titanium connecting rods, beehive springs and titanium retainers for improved spring rate and lighter mass, AMG performance cams, ported heads, custom built airboxes, larger injectors, and fitted with a MY 96 ME-1 engine management system complete with rebuilt wiring harness and RENNtech ECU Performance Tune, the S76R engine is also the most powerful N/A M120 -engine built by RENNtech.
Rated at 615 hp and 703 lb-ft of torque, the M120 -engine produces 213 hp and
275 lb-ft of torque over the stock 6.0-liter (402 hp / , 80 hp more than the
ultra rare AMG 7.3-liter found in the SL 73 AMG, S 73 AMG, and CL 73 AMG, and
just shy of the 631 hp Mercedes-Benz CLK GTR super car.
Through an extremely labor intense process, the 1992 600 SEL was upgraded to model year 1996 engine management (ME-1) system to fit an RENNtech upgraded 722.6 electronic 5-speed transmission connected to an OS Giken Limited Slip differential. The combination greatly improves power delivery and drivability beyond what the original 4-speed transmission and differential could offer and handle.
|7.6 -liter V12 (M120) 605 hp and 715 lb-ft of torque|
Handling: The S76R features a bespoke braking system utilizing 402 mm (F) and 360 mm (R) Carbon Ceramic discs with 6-piston front and 4-piston rear AMG brake calipers with custom aluminum hats and brackets is connected to an 2nd generation ABS system. The new brake system weighs nearly 3/4 less than the original system and creates incredible stopping power for the S-Class. The large brakes were fitted inside one-of-a-kind RENNtech Classics forged aluminum wheels measuring 19 x 9 (F) and 19 x 10.5 (R) with 285 wide rear tires for additional traction and grip, while shorter coil-springs and a 2nd generation ADS -system were added to improve the handling qualities.
|S76R Carbon Ceramic Brake System with 6-piston calipers and 402 mm front discs.|
To improve the exhaust flow equal length stainless steel headers, a full-length stainless steel exhaust system with sport catalytic converters and quad mufflers were added. The system gives the naturally aspirated S76R a powerful yet refined sound, which at wide open throttle sounds race-car aggressive and at low speeds hums a muted tune, barely loud enough to be noticed inside the cabin.
|Forged 19 in. aluminum wheels custom made for S76R|
Exterior: On the exterior, the S-Class body received AMG ground effects all around, along with RENNtech designed trunk lip spoiler with 3rd brake light, front splitter, and louvered side moldings. Keeping with a low-key style, the lowered stance, large wheels, and dual tip exhaust, offer clues that the black S76R is more than a stately sedan.
Interior: The original interior was completely overhauled with new seats, diamond stich upholstery, carbon fiber inlays, Alcantara headliner, a leather dash and center console, re-covered leather and carbon steering wheel, shifter, and new carpeting. The original rear bench seat was converted to the four-passenger option featuring individual adjustable rear seats, all interior lights were replaced, and the sound system was replaced by a new smartphone compatible head-unit and re-coned speakers.
|Custom made interior for S76R.|
Outside of the upgraded parts, the 1992 S-Class was restored in every detail. Bushings and ball joints, door lock and soft close actuators, brake lines, new HVAC ventilation pods, hydraulic suspension accumulators, oil cooler, evaporator, heater core, and other worn parts were replaced to make the S76R as good as brand new.
|S76R Badging and RENNtech trunk lip spoiler.|
With RENNtech’s engine and performance upgrades, the S76R holds its own among contemporary luxury sedans with 0-60 mph acceleration in the low 5 seconds and enough torque to move the 4800 lb. S-Class easily to the 155 mph mark. The added power gives the S76R a highly responsive feel, resulting in a car that drives much lighter and nimbler than the tank-like 600 SEL. 30 years later the interior ergonomics still feel first class, with large dual-paned windows, sizeable seats, and a vault like ambiance and enough space to seat four individuals in true comfort.
30 years after the first RENNtech M120 powered Mercedes-Benz hit the market, the S76R RENNtech adds a chapter to Merceds-Benz W140 S-Class and M120 -engine history. And for those fortunate enough to commission a dream build of this scale, RENNtech Classics holds the blueprints to make the dream a reality.
|1992 600 SEL RENNtech S76R built in 2022.|
|The powerful yet understated profile of the S76R.|
|S76R interior with diamond stitched upholstery and carbon fiber trim.|
|Individual adjustable rear seats of the S76R.|
|RENNtech stainless steel exhaust tips.|
|RENNtech S76R carbon fiber trim.|