We were at the 2009 Bradenton Supercar Shootout and witnessed this Twin Supercharged Lamborghini Diablo beating up on every car in the street tires class to finally take the win. This Lambo was consistently running deep in the 10′s and probably made more passes down the drag strip than any other car out there. Most, if not all of the other Lamborghinis at the event were sidelined with mechanical issues or just there for “show”, even though this was a racing event, now a car show. Check out the pictures and video of this old school Lambo screaming down the track running a 10.77 @ 135.78 MPH, it has a relatively quiet and unique sound to it.
Car and Driver posted a video and review running the Dodge Viper, Chevrolet Corvette ZR1, Lamborghini Murciélago, and Mercedes SL65 AMG Black Series running heads up. Here is a summary of their performance results:
The most interesting matchup here is the Viper and the ZR1, this appears to be the first time they have been tested together. While the ZR1 won the 1/4 mile race, the Viper appears to have more top end pulling power, trapping higher in the 1/4 mile, and further extending the lead, beating the ZR1 to 150 MPH by 7/10th of a second. In the end, it’s a drivers race with the Viper and ZR1, both are very fast and amazing performers, although ultimately Car and Driver awarded the ZR1 first place and the Viper 4th place. Check out the video below as well as the link to the full article:
While at the 2008 SEMA show this year, DragTimes.com came across an incredible GLK done by the team over at RENNtech as part of a tuner challenge put together by Mercedes-Benz to debut the new GLK Series in the US. Take a moment to vote for our favorite by clicking HERE.
from Mercedes-Benz Press Release:
Inspired by the winged, unlimited-class rally cars of the famed Pikeses Peak Hill Climb, RENNtech set about creating a GLK that could master the pack and leave the rest chewing gravel. But, this wild GLK has a few surprises beneath its menacing exterior.
Hybrid powertrains are generally associated with fuel efficiency and lower emissions. However, RENNtech has taken one more benefit of the hybrid principle to turn the GLK into a formidable performer. By combining an electric motor in parallel with the 3.5 litre V6 petrol engine, RENNtech has been able to capture the impressive torque that characterises electric motor drives, adding 54 Nm to enhance the GLK’s performance off-the-line and out of corners. Using a hybrid drive in a hill climb setting has the added advantage of maintaining thrust at higher altitudes, when internal combustion engines – which depend on ambient air – start to wheeze.
The specialist Mercedes tuning company has also worked its magic on the base 3.5 litre V6 unit, using components from the latest Mercedes-Benz high-performance 3.5 litre V6 Sport engine. These include a special intake manifold, cams and cylinder heads, to which RENNtech has added its own long-tube headers, composite air intake and RENNtech ECU software. Engine output is up to approximately 350 hp, augmented further by the electric motor from the hybrid drive.
The additional 72 volt drive is run by 12 volt plug-in batteries. RENNtech is currently working on a nickel-hydride solution with regenerative charging for additional range.
“The GLK Rally Racer Hybrid is a fully-functioning test bed,” explains Hartmut Feyhl, founder and President of RENNtech. “We will use this vehicle as a proof-of-concept, which we will develop and enhance throughout next year.”
“With the Rally Racer, we have really increased the car’s performance,” continues Feyhl. “Together with the more aggressive, sporting look, we have created a powerful and exciting package.”
It is also worth noting that, despite the performance enhancements, RENNtech has succeeded in improving the fuel economy of the Rally Racer compared with the original version, “proving that high performance and efficiency can coexist,” adds Feyhl.
Bearing in mind that the Rally Racer is built for speed on tough terrain, RENNtech opted to forego creature comforts, cutting the weight of the standard GLK by removing most of the sound insulation and replacing the Mercedes-Benz seats with lightweight carbon-fibre buckets. Engineers also fitted a full roll cage and moved several components towards the rear of the vehicle to create an almost perfect 50:50 front/rear weight distribution for improved handling on tight, demanding rally stages.
Another significant handling modification comes from the custom coil-over suspension. Made to RENNtech specifications by suspension supplier KW, the package allows for adjustments in height, rake, damping rate, camber and toe-in.
Extra stopping power is provided for the Rally Racer courtesy of an in-house RENNtech brake combo featuring massive 412mm, 2-piece rotors with 8-piston callipers at the front, and 356mm discs grabbed by 4-pot callipers at the rear.
Lightweight 20 inch 3-piece, 5-spoke RENNtech wheels in a “Sniper Gray” anthracite finish, clad in NT05 275/40 20 Nitto rubber at the front and NT05 315/35 20 at the rear, fill the prominent wheel flares that underscore this GLK’s performance potential.
Although extensive exterior revisions were made to accommodate the larger wheels and brakes and to widen the track, the focus of bodyshell modifications was enhanced aerodynamic efficiency. RENNtech used the latest in Computational Fluid Dynamics (CFD) software to develop the package. The front splitter, rear diffuser and lower side skirts help direct airflow underneath the GLK Rally Racer to reduce drag and produce added downforce, while improving high speed stability at the rear. The rear wing elements also serve an important aerodynamic purpose and add emphasis to the aggressive edginess of the original GLK design. From a visual perspective, RENNtech engineers successfully melded their aerodynamic modifications with the flared wheel arches to create a powerful side line that highlights the dynamic thrust of the Rally Racer.
“The GLK was a great starting point for this project,” says Hartmut Feyhl, “It has excellent underpinnings for performance tuning and I think the overall look really suits it.”
“The GLK gave us a great deal of scope for bringing together form and function. For the RENNtech GLK, performance may have been the primary goal, but it also looks the part,” he adds.
Dynolicious is an automotive performance meter available for the iPhone and iPod Touch. Dynolicious uses the accelerometer hardware built-in to the iPhone to measure the performance characteristics of your car. The software will record your 0-60 time, as well as relevant 1/4 mile data. If you put in your car’s weight and estimated driveline losses it will also estimate your horsepower. Dynolicious can keep a history of your test runs, showing you averages and trends in your results. The app also allows you to enter modifications performed to your vehicle, and will instantly show before-and-after results to easily identify gains or losses.
This video shows the Dynolicious software running heads up against the GTEC Pro RR in a 2005 Mercedes-Benz E55 AMG RENNtech Stage II. About 10 runs were made with very similar results. The best run on of the night was a 12.22 @ 121.78 MPH, with 0-60 MPH in 4.1 seconds on the GTEC, on the same run Dynolicious was showing a 13.14 @ 116.8 MPH, with 0-60 in 5.01 seconds. The best run for this E55 at the drag strip is 11.6 @ 119.7 MPH. No experimenting with the mounting of the iPhone was done for the runs. The iPhone was secured in the flat center console area of the car after the cup holders were removed.
View the video below, you can see the red light flash on the GTEC after it finishes recording the 1/4 mile, then you can hear the beep of the iPhone indicating the 1/4 mile has passed:
We posted the first stock dyno results of the Mercedes-Benz C63 AMG back in April when it put down an impressive 380 HP and 363 ft-lb of torque to the rear wheels. We knew it was only a matter of time before the tuners were able to reveal the true potential of the C63′s 6.3L 32-valve V-8 AMG engine, and that time is here.
RENNtech just delivered a C63 AMG to a customer that put down 431.4 horsepower and 387 lb-ft of torque to the wheels by custom tuning the ECU and adding a set of headers. The same car put down 374 and HP and 367 ft-lb torque a few dyno runs earlier. Using a conservative 18% driveline loss, that puts this C63 at very impressive 525 HP and 471 ft-lb of torque. That’s a serious power pickup of almost 60HP from just a couple of mild upgrades. We expect the tuned C63′s to be well into the 11′s at over 120 MPH trap speeds with decent weather and track conditions. Check back soon to see what these tuned and stock C63′s are running in the 1/4 mile. Click on the dyno graph below to view the details:
We have our first C63 dyno report to come in. With just 100 miles on the odometer, a 2008 Mercedes-Benz C63 AMG put down a solid 380.67 horsepower and 364.30 pounds of torque to the rear wheels on a DynoJet dynamometer. Using an 18% driveline loss, this puts the C63 at around 464 HP and 443 pounds of torque, just a bit higher than the 451 HP and 443 lb-ft torque rating from Mercedes.
The C63 AMG has the same hand-built 6.3L 32-valve V-8 AMG engine that appears throughout the AMG lineup where it outputs as much as 518 HP. We have an E63 dyno run that put shows 408 RWHP and 363.05 RWTQ. Not too far off from the C63′s horsepower numbers while the torque is just about the same.
By looking at the C63′s dyno graph, it’s pretty clear where the de-tuning from AMG occurs to keep the lowest priced AMG from leaving it’s more expensive cousins in the dust. It’s only a matter of time before the tuners start unleashing the true potential of this motor to 500+ HP, allowing the C63 AMG to really tear up the roads.
Click on the image below to view the C63′s dyno graph, picture and video on the dyno:
It’s not often that we get real world dyno results from super exotics, so we excited to bring you real world horsepower and torque figures for the Mercedes SLR 722 Edition in both stock and modified forms. The Mercedes-Benz SLR 722 is likely to be the most expensive and powerful car Mercedes currently produces with an astounding 650 HP and 605 pounds of torque. The number 722 refers to the victory by Stirling Moss and his co-driver Denis Jenkinson in a Mercedes-Benz 300 SLR with the starting number 722, indicating a start time of 7:22 a.m., at the Mille Miglia in 1955 (ref Wikipedia).
RENNtech put the SLR 722 on a DynoJet dyno for some baseline dyno results and came up with 546.24 horsepower and 539.53 pounds of torque at the rear wheels. Using an estimated driveline loss of 18% for the 722′s automatic transmission, that puts the stock SLR 722 at around 665 HP and 657 pounds of torque. Of course that’s not enough power for the folks over at RENNtech, so they did a few upgrades. By changing a pulley to spin the supercharger quicker for more boost, adding some cooling upgrades and some ECU tuning, the newly modified SLR 722 put down 593.06 horsepower and 602.15 pounds of torque to the rear wheels. Using the same 18% driveline loss, that puts the numbers at 723 HP and 734 pounds of torque. This makes the SLR 722 really live up to it’s name with just over 722 horsepower!
Stephen Selden might have the quickest and fastest documented Mercedes to run down the 1/4 mile to date. Stephen’s 2003 S600 came from the factory with a 5.5L V12 Twin Turbo engine outputting 510 HP and 612 pounds of torque. At least that’s what Mercedes states, most people know that these are cars are significantly underrated from the factory and actually put out much more power and torque (stock S600 Dyno). Knowing that the twin turbo V12 under the hood had much more potential, Stephen started upgrading. Stephen upgraded the ECU from RENNtech which upped the output from the turbos, replaced the rear exhaust sections with an Eisenmann system to relieve some back pressure, and installed a Nitrous Express 150 shot of nitrous.
After putting on a pair of Mickey Thompson drag radials and adding some race gas, Stephen went on to his record breaking run of 10.585 @ 132.46 MPH at Maryland International Raceway during a private track rental on March 26th, 2008. Weather was cool and cooperative with a DA of -600 for the runs. With a running weight over well over 4650 pounds, sticky drag radials and extreme amounts of horsepower/torque, a subsequent run resulted in a broken drivers side axle during the launch. Congrats to Stephen for producing this record breaking run, we hope you’re already back up and running as well as planning for another trip to the track!
Click on the link/image below to view Stephen’s record, timeslip scan, pictures and video of the run:
Rob MacNeil aka oldgixxer ran his bone stock Mercedes-Benz E63 AMG down the 1/4 mile during a private track rental at Atco Raceway in New Jersey last week. After a couple low 12 second shakedown runs, he managed to produce a record breaking run of 11.952 @ 118.32 MPH. Weather was excellent for the track rental with an approximate DA of -1600 during the runs and the track prep was good allowing for some aggressive launching. His 60′ time for the run was 1.83, which shows the car could have went even quicker with a more aggressive launch – providing the tires and track prep could keep the car from breaking loose.
This is a significant run since it’s been long thought that the E63 was not nearly as stellar of a “drag car” as it’s predecessor, the E55 AMG, due to it’s normally aspirated engine and comparatively less amount of torque. It just took the right car, driver and conditions to produce the first 11 second run. For comparison purposes, the quickest stock E55 we have was produced by Enzom running a 11.775 @ 118.69 MPH.
Click on the link below to check out the scanned timeslip, pictures and most importantly video, showing Rob’s E63 breaking into the 11′s, with the baby car seat in the back and all, congrats Rob!