SL55 for the track

Subscribe
Jul 15, 2011 | 03:39 PM
  #1  
Does anyone out there own a stripped, lightweight SL55? How much have you managed to reduce the overall weight?

For some reason I have this sick idea to buy a cheap SL55, preferably one with some interior damage to get it cheap, completely strip it down to the bare bones and then mod it for the track. Interior stripped down to the bare metal, racing seat, stack cluster, and roll cage. Pull out all the folding top nonsense and bolt it down. All of the sound deadening around the car would go as well. Then just add some stiff suspension, big brakes and lightweight wheels and I'd be set.

Good idea or should I talk to a shrink?
Reply 1
Jul 15, 2011 | 04:14 PM
  #2  
Nate Pritchett, of PINKS fame, is already working on something similar.


http://www.ustream.tv/recorded/15268958

http://www.mustangevolution.com/must...o-wicked-cars/





Reply 0
Jul 15, 2011 | 07:36 PM
  #3  
Quote: Good idea or should I talk to a shrink?
You already have a CLK63 BS which is probably a better track car than a SL55 would ever be. BTW, you can't just stiffen the suspension. SL's have ABC. The SL65 BS sounds like what you want. Stripped down (somewhat), bolted down top and stiffened suspension with widebody kit. Not cheap though.

SL55 transmisison is not really suited for heavy track use either.
Reply 0
Jul 15, 2011 | 10:31 PM
  #4  
Funny they think its an SL55??
Quote:
The first out of the gate will be Coast Chassis shop’s new flagship car, a 2006 Mercedes AMG SL55 with a Brad Anderson HEMI sitting between the framerails and a black PSI screw supercharger protruding out of the hood.
but I see a CL model?
Reply 0
Jul 16, 2011 | 12:50 AM
  #5  
Quote: You already have a CLK63 BS which is probably a better track car than a SL55 would ever be. BTW, you can't just stiffen the suspension. SL's have ABC. The SL65 BS sounds like what you want. Stripped down (somewhat), bolted down top and stiffened suspension with widebody kit. Not cheap though.

SL55 transmisison is not really suited for heavy track use either.
So you can't rip out all the ABC mess and just bolt in standard coil over suspension? I admittingly have never looked under a SL with the wheels off.

I love the SLBS but that's unfortunately out of reach... the whole idea is to build a capable SL-based track car on the cheap.

In my fantasy land I'd rip out the stock slushbox for a Hewland LSG

(I know I just contradicted myself)
Reply 0
Jul 16, 2011 | 03:35 PM
  #6  
SL's are sledge hammers - I cant think of a worse track car, why not by a GTR spend 10k on it and it will be a 10 second car.
Reply 0
Jul 16, 2011 | 08:12 PM
  #7  
Quote: Does anyone out there own a stripped, lightweight SL55? How much have you managed to reduce the overall weight?

For some reason I have this sick idea to buy a cheap SL55, preferably one with some interior damage to get it cheap, completely strip it down to the bare bones and then mod it for the track. Interior stripped down to the bare metal, racing seat, stack cluster, and roll cage. Pull out all the folding top nonsense and bolt it down. All of the sound deadening around the car would go as well. Then just add some stiff suspension, big brakes and lightweight wheels and I'd be set.

Good idea or should I talk to a shrink?
I can provide a psychiatric referral if needed.

The SL55 is a great car. It is even great on a road course. But doing what you are thinking is similar to the Porsche 928 guys that insist on turning their cars into track cars. It may be an interesting exercise, but it's just not the best starting point. You would be far better off going a different route. But to each his own. This reminds me of the square peg, in a round hole analogy.
Reply 0
Aug 3, 2011 | 10:24 AM
  #8  
I think it's actually a great idea, I think KW already make coilovers for the SL (I'll have to check). You'd have to do extreme weight reduction. I'm thinking of doing this myself, just trying to decide if it's feasible or not which I suspect I won't be finding out very soon. The GT-R does seem like the most "efficient" way of making a track animal but it some how lacks a personality. I test drove one once and it was just stunning in terms or performance. The SL however is better looking, especially if you go for a widebody kit, it sounds better and I think has potential, but expect to pay money. Also plan out EVERYTHING before even getting the car, research, research, research.
Reply 0

MB World Stories

The Best of Mercedes & AMG

Explore
story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Aug 6, 2011 | 10:19 PM
  #9  
I've been thinking about this for a long time. Why sell my SL for 25k, when I could just invest a little bit more to have a track car. For starters, I would just unbolt the roof (I wonder what I could get for my pano roof?) It would make designing a chromoly cage a whole lot easier. Tires, wheels, straight pipes, strip it, GO!!!!!
Reply 0
Aug 6, 2011 | 10:39 PM
  #10  
As far as brake upgrades go, you many not need one if you can strip an SL55 down to the bare bones and get the weight down by 1,000 pounds or so. The stock breaks would become even better.

...but I agree that the SL just is not a track car. You are better off buying a C55, throwing the blower on that, and stripping down the C class.
Reply 0
Aug 7, 2011 | 11:03 AM
  #11  
C55? Maybe a C63 but the C55 wasn't one of Mercs best chassis. The CLK wasn't a track car and they made the Black, yes lots of mods and different parts but the same chassis none the less. Now stripping an SL is different, I think that kills the car. Lightening but keeping the interior and all is good but stripping it like a Miata is blasphemy.
Reply 0
Sep 17, 2019 | 10:02 PM
  #12  
I'm doing that to my car.
A lot of weight savings can be done.

Delete ABC - done
carbon seats (pricey, not done)
remove a lot of plastics, trims. - partially done
li-fe battery - done
full straight exhaust - done
remove stock brakes, nascar brakes install - in progress. (pricey)
superlightweight forged 18" wheels - done (not installed)
aluminum suspension parts instead or steel ones in AMG models. - in progress
swap to manual transmission - in progress.

my goal is to get close to 1500kg

but i will never remove tetraclable top. it makes SL unique
and yes it adds extra 150-200 kg to the car vs all that sh*ty soft top cabrios.


choosing among some trannys

tein super circuit coilovers from gtr35 (custom chassis mounts and custom control arm mounts to fit r230)
Reply 0
Oct 1, 2019 | 06:45 PM
  #13  
I'd love to hear more about your brake swap to traditional style hydraulic mastercylinders. Are there any options that adapt to firewall or you just throwing out OEM and fabricating from scratch the pedal box? I wouldn't do this to my prestine 18k mile SL, but you can get these as cheap as Miata now days....why not one for the boulevard and one for the track/canyon carving. I have caged, hard core cars with engines in back....but I still think a light weight SL would be really fun.
Reply 0
Sep 11, 2020 | 02:56 PM
  #14  
I Left SBC, it works like a charm with my new brakes.


lightweight brakes installed

Reply 0
Sep 13, 2020 | 05:37 AM
  #15  
If you want to make Car fast, start with a Fast Car .
I completely agree ,look at the list of things these have already , RWD V8 Supercharged , huge brakes solid chassis .
Ive done this to mine and aim to make it Handle as well , ive not kept a log of how much weight ive shed but ive dumoed the interior , Carpet and original seats , fitted Recaro Mclaren Sports seats - these may have to be shed for even lighter ones one day , ABC kit is all dumped , Anti roll bars fitted, Fuel system re-located and upgraded , plenty more to do once finds allow as ive run out of coin for the moment .
Reply 0
Sep 17, 2020 | 11:09 AM
  #16  
I'd love to see how you made the custom mounts for the Tein Coilovers , ive been looking for an option for Coilover dampers- im currently on Bilsteins on mine .
Can you add any pics of them off and on the car please ?
Cheers
Tony
Reply 0
Sep 17, 2020 | 09:34 PM
  #17  
Glad to optimistically hear that the SBC can work when the hard parts are uprated. Obviously dumping weight is better than any brake kit alone. And the fact that I'm comparing the stock AMG setup to others in stabile with either GT2 brakes or ceramic Rotora Brakes on cars 1300lbs lighter is a tough swallow. Im still waffling between taking an SL down or building a CLK up. Swapping brakes and suspension just sound less failure prone than messing with German ECU's living in the middle of corn fields.

I love hearing ideas and what others are doing. The whole argument of these being big expensive GT cars held more truth when they were $100k and not price below a Mustang. I know in "numbers" these won't ever beat the GT2 on track or even a new GT500 or Z28. I just think its a fun project that could offer great fun and rewards. Can't be any siller than buying a new Miata and spending $20k in upgrades. The whole argument about "not an ideal chassis" for track times is a wash. For most of us hear as simply above average drivers, we would all just buy GTR's then. I know Id be faster in a GTR than my Porsches with nannys turned off or any rear drive Mercedes......just not the point for many.
Reply 2
Subscribe
Currently Active Users (1)
 
story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE