We see a lot of rare German cars. Some of the best gems from tuners the likes of AMG or Alpina bring the buyers out of the wood work and as such realize high prices. The one common theme that we see in big ticket sales of tuner cars is documentation.
Now documentation on cars like these is not always easy. It is well known that trying to find specific records of modifications done to a car from some place like AMG can end in a dead end. In some cases if you really want to be sure about an engine modification it takes opening up the engine and looking at stampings on internals. That said there are often other clues that can help you back up a story about a one off vehicle. Scanning in any documentation you have is the obvious first step, but then adding pictures of data plates, the VIN, or other unique features is needed.
A seller should never make any rock solid claims about the vehicle without being able to back them up. At the very least give some indication of a reason as to why you are making a claim. If you aren’t sure about something it is much better to say so up front or even to ask for help in identifying a feature or modification within the text of an advertisement. Enlisting the help of enthusiast out in the world can help in two ways. You might get some helpful information back and the up front nature can prevent a listing from seeming cagey and turning off the very community where your potential buyers reside.
Ok deep breath, what’s all that have to do with this particular car. Here we have a Mercedes listed as a 1998 SL60 with modifications from Swiss firm Rinspeed, the car has 71,000 miles.…
After 3 of these monster R129 Mercedes showed up this past summer, we got a tip for another one on eBay from Portland, Oregon. It’s a short list of cars that have over 7 liters of displacement, and pretty extreme for Renntech to punch out the normal 6.0 liter V12 in the SL an extra 1.4 liters. A couple things always seem come up with these cars: time/space-bending power in a dated chassis, and massive depreciation. I’ve always fantasized about having a Benz that could light up the rears on the highway, so maybe this is the most financially feasible way to achieve that goal.
The seller’s 2 cents:
This is an extremely rare Mercedes SL600. It was converted to a RENNtech in 1999, and has a 7.4 liter 575 HP engine with camshafts and ported and polished heads. It also carries a RENNtech resonator by pass, RENNtech rear muffler, oil cooler, CF air intake, transmission upgrade, ASR delete switch, larger front and rear sway bar, Alcon 14″ front brakes and AMG 18 inch Aero wheels all verified through RENNtech. The Customer spent $73,681.00 to do this RENNtech conversion. The car is in spectacular shape, with books and all four Keys.
In the same sleeper green as the one Evan found this summer, this one is extra sleepy with standard AMG monoblocks and completely shaved identifying badges. Nice to see another one that’s been driven, having covered 89k miles, but the flipside is that you’ve got a 90k-mile tuner V12. Right. Anyways, while it’s certainly not the best looking R129, that’s kind of the appeal here: scary power in as plain-jane an exterior as Mercedes can do. No bites at $20k yet, we’ll see if even that is too high for a car whose monster in the engine bay is only matched by its monster depreciation.…
Today hearing of a Mercedes pushing 500 horsepower, while not really yawn factor, is certainly not surprising. AMG has done an amazing job generating massive power and torque numbers for Mercedes that you can now buy of the regular dealer showroom floor. While big engine big power Benzs have been a hallmark of the company for years they were scarcer in years past.
This big fellow could scare off just about everything else on the road when it was new back in 1994. The SL74 was a Renntech package that took the already potent Mercedes 6 liter V-12 and pushed it out to 7.4 liters. With about 600 horsepower and 600 lb. ft. of torque after the conversion all coming out of a lagless normally aspirated engine one could easily spin the z rated tires down to the rims.
It isn’t clear if this car was converted by Renntech just after the purchase or if the conversion took place later in the car’s life. With only 15,000 miles it doesn’t really matter.
This car has similar specs to the Renntech SL74 I posted early this summer:
Giant brakes (seriously look inside the wheels at those things), exhaust, limited slip diff, upgraded transmission all are necessary additions. The sort of things you would associate with a handbuilt rocketship. What sets this one apart, ironically, is at first glance it is so subdued. You could easily mistake this for just another R129 series Benz. The wheels are nothing too exciting, though closer inspection reveals them to be light magnesium wheels. Nothing seems too fancy about the bodykit, some flares and vents, not even a badge on the back, then you realize it is all carbon fiber, hood, fenders, rockers. This saves, according to the seller 600 lbs in weight.
A peak inside and you can see that this SL is not for prowling a Florida retirement community, though grandpa would probably like the feel of those Recaro ortho sport seats, grandma likely would not want to fumble with the four point race harness.…
While Mercedes and its associated high end tuners went through a stage recently of getting huge horsepower numbers from supercharged and turbo cars, there is something to be said for pure normally aspirated big block power. This Renntech modified SL74 epitomizes that philosophy. The stock 6.0 liter 48 valve V-12 engine has been bumped out to 452 cubic inches and is generating 575 horsepower and 600 lb. ft. of torque. The power is mated to a five speed automatic that has been beefed up to handle the power. Worked over intake, uprated suspension and cooling systems, 14″ Alcon brakes, 18” OZ Racing wheels( 18” x 11.5” out back), and AMG bodyparts. Plus you get all the luxury interior components you would expect from a top of the line Benz of that era. The seller says he whole package cost $90,000 from Renntech when it was new.
All that huge no lag power must be an real blast. The car is hardly broken in with only 17,000 miles. The car looks like it came from Canada since I see Manitoba plates in one of the photos. For $79,000 you can go pick this car up in Dallas Texas and have a fun comfortable ride home anywhere in the country.
Lots more pictures and description from the seller are on his site.