SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: For Sale: 33k-Mile 1997 Mercedes-Benz SL600 RENNTech SL74

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Old Dec 20, 2021 | 02:11 PM
  #1  
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For Sale: 33k-Mile 1997 Mercedes-Benz SL600 RENNTech SL74

No connection to the seller, just thought some on here might want to see this one.

With seven days left to go, bidding is currently sitting at $91,000. Be interesting to see where this one ends.


1997 Mercedes-Benz SL600 RENNTech SL74
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Old Dec 20, 2021 | 11:38 PM
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Always a pleasure to see these cars.

Thanks for the listing.
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Old Dec 21, 2021 | 12:05 AM
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I never get tired of looking at that all aluminum radiator.

I wish there were photos of the ALCON brakes.

You can tell the ADS valve body failed by all the scrape marks on the under carriage. The mention of the front fenders getting repainted was probably due to the tires scrubbing the underside of the fenders and generating heat burns in the paint where they made contact.

I didn't know there were factory AMG catalytic converters. I just bought replacement converter pipes and wish I knew about these 3 months ago.

The car body is actually a little beat up.
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Old Dec 23, 2021 | 11:20 AM
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Originally Posted by mahunt
by all the scrape marks on the under carriage. The mention of the front fenders getting repainted was probably due to the tires scrubbing the underside of the fenders and generating heat burns in the paint where they made contact.
The car body is actually a little beat up.

Hahaha or this

🤣🤣🤣
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Old Dec 23, 2021 | 03:03 PM
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Considering that that "Ferrari" is a cheap imitation, they could have set it on fire and rolled it into Lake Michigan.

I hope the current owners of the RENNtech put new bump stops on the front struts when they changed out the valve body. The bump stops keep the body up enough when the valve body fails so it doesn't contact the front fenders. You still have to drive VERY carefully back home if home is close. If not, then it has to be flat towed.

I did like the photos of the heim joint converted 5 link rear suspension. It looks like mine.

It should be a fun car for some lucky winner. I hope the new owners bring it back to it's former glory.
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Old Dec 23, 2021 | 03:17 PM
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Originally Posted by mahunt
Considering that that "Ferrari" is a cheap imitation, they could have set it on fire and rolled it into Lake Michigan.

...
Even though it's less than 1% of the cost of the genuine article, given that the car in that clip was auctioned for over $120,000 about ten years ago, I'd say it's an expensive imitation.

The one that went out the window was just a fiberglass shell, but the one built for driving was actually a pretty involved effort.
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Old Dec 23, 2021 | 03:38 PM
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Originally Posted by Gylles Smyth
Even though it's less than 1% of the cost of the genuine article, given that the car in that clip was auctioned for over $120,000 about ten years ago, I'd say it's an expensive imitation.

The one that went out the window was just a fiberglass shell, but the one built for driving was actually a pretty involved effort.

I snapped a couple of pictures of it at this years Pebble Beach Car Week.
Yeah someone paid a premium for it….




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Old Feb 17, 2022 | 02:44 PM
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Originally Posted by mahunt
Considering that that "Ferrari" is a cheap imitation, they could have set it on fire and rolled it into Lake Michigan.

I hope the current owners of the RENNtech put new bump stops on the front struts when they changed out the valve body. The bump stops keep the body up enough when the valve body fails so it doesn't contact the front fenders. You still have to drive VERY carefully back home if home is close. If not, then it has to be flat towed.

I did like the photos of the heim joint converted 5 link rear suspension. It looks like mine.

It should be a fun car for some lucky winner. I hope the new owners bring it back to it's former glory.
Hello mahunt, I am the new owner. Trying to get my local shop to lower it using STAR, but the computer is not accepting the lower height. It's jacked up far too high as you saw in pics.

Any advice would be appreciated, as this is my first R129.

Thanks
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Old Feb 17, 2022 | 06:26 PM
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Originally Posted by DoctorV8
Hello mahunt, I am the new owner. Trying to get my local shop to lower it using STAR, but the computer is not accepting the lower height. It's jacked up far too high as you saw in pics.

Any advice would be appreciated, as this is my first R129.

Thanks
There cant be any ads fault codes stored, so clear them all first before lowering. Then when doing the actual lowering, the stance can't be anything ridiculous and the car cannot be dropped super low. Try it again
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Old Feb 17, 2022 | 10:35 PM
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You can lower the car to your satisfaction like I did with the front and rear height sensor links. Shorten the front and lengthen the rear.

Do a search on my name either here or on the other Benz website and you will find out what to do.
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Old Feb 17, 2022 | 11:56 PM
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From the pictures, the back is a little high and I wouldn't go lowering the front any more until you learn to NOT braille park the car.

Aesthetically, the side wall of the tire should be about the same width as the upper tire gap to the body.

If you are looking to slam the car (it certainly can be done) to the ground, you may encounter some problems.

My own car has about the same gaps (but a little lower in the back).



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Old Feb 18, 2022 | 04:34 AM
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R129 SL55 AMG & W208 CLK55 AMG
Sold for 95k it seems.
The Renntechs don't hold value like the AMG models do. Is it to do with rarity?
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Old Feb 18, 2022 | 08:27 AM
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I think it is perception. Maybe not as famous?

The RENNtech cars have way more details that the AMG ones.

Brakes, suspension, interior, etc.

The RENNtech cars are much more unique.
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Old Feb 18, 2022 | 08:36 AM
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The ADS equipped cars are fortunate in that they can raise and lower the suspension when parking, but you still have to remember to do it. Best to park the car short or shallow parked. I've thought about backing in, but even the muffler is susceptible to damage. Granted, it's not as expensive to repair.

This is what happens when you braille park a too low R129.


This is a good bump stop in that the 2 locating rebars aren't poking up an inch, but it still caught this new owner.

Bad habit.
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Old Feb 20, 2022 | 05:06 AM
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You can set the ADS II by Stardiagnosis to rise automatically when you drive less than a little something. Guess what i did with our cars.

Originally Posted by mahunt
I never get tired of looking at that all aluminum radiator.
Eat this



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Old Feb 20, 2022 | 12:18 PM
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Did you have that commissioned or was it pre-made?
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Old Feb 20, 2022 | 01:34 PM
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It was manufactured, Mercedes once again had no replacement at the time.
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Old Feb 21, 2022 | 04:51 AM
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Originally Posted by mahunt

The RENNtech cars are much more unique.
What do you mean by that? Unique in what sense?
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Old Feb 24, 2022 | 03:53 PM
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I thought I mentioned some of the unique parts above.

The aluminum radiator.

The Alcon brakes.

The interior.

Heim joint 5 link rear.

Some of the cars box the underbody crossover braces.

Some of the cars have a closeout panel between the rear lower lip of the bumper cover and the belly pan.

Bunch of stuff.
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Old Feb 25, 2022 | 02:28 AM
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Originally Posted by mahunt
I thought I mentioned some of the unique parts above.

The aluminum radiator.

The Alcon brakes.

The interior.

Heim joint 5 link rear.

Some of the cars box the underbody crossover braces.

Some of the cars have a closeout panel between the rear lower lip of the bumper cover and the belly pan.

Bunch of stuff.
oh okay, and in your opinion, do you think these impact resale value of these cars?
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Old Feb 25, 2022 | 09:15 AM
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There is more physically to a RENNtech (they are better?) than an AMG, but AMG is more widely known.

If a AMG goes down the road and someone sees it, they say "Oh, there goes an AMG". If a RENNtech, Carlsson or Brabus goes down the road, folks will say, "What the heck was that!"

IMO, every R129 (specialty car or not) depends on the car. Low mileage and great condition regular R129s can rival specialty car auction prices.

In general, IMO, the specialty car SHOULD be worth more because there is more to them than the regular cars.

RENNtech cars are more unique than AMG, but their rarity may work against them at auction.
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