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    • Speedriven is the first to get the R230 SL and the M275 V12 into the 9's with a 9.97@141.35 1/4 mile pass

      It's about time! Finally the M275 V12 has broken into the 9's. SpeeDriven is known in AMG tuning circles for their M275 V12 work which includes upgraded turbochargers. The M275 obviously is not hurting for displacement offering up to 6.0 liters in the 65 AMG models but development had stalled for a while.


      SpeeDriven made a lot of big claims regarding horsepower for their turbo upgrades and the most they have showed on a dyno was in the 8XX wheel horsepower range. We prefer timeslips over dynographs and the 9.975 @ 141.35 run certainly is impressive along with being a new quickest and fastest record.

      We expect more though. This is a 5.5 liter twin turbo V12 are talking about here with this R230 SL600 and SpeeDriven has claimed over 1000 horsepower on the platform. The trap speed of 141 is solid but there definitely is and should be more in it.

      Obviously people want details but the owner is keeping them quiet. Why? If he intends to do some serious street racing that is understandable. We certainly would like the details though. Obviously the car features upgraded turbos, race gas, and drag rubber.

      Even bigger turbos are on the way supposedly which should push this into far more serious territory. That widebody definitely isn't doing the car any favors as far as aerodynamic drag.

      Congratulations to SpeeDriven on breaking new ground. Now let's get some concrete details to go along with the record!


      This article was originally published in forum thread: SL600 9.975sec. 141 MPH 1/4 mile started by 65AMG View original post
      Comments 79 Comments
      1. MR747's Avatar
        MR747 -
        nice 60ft
        what tyres were they running
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MR747 Click here to enlarge
        nice 60ft
        what tyres were they running
        I don't know. I'd like more details but for whatever reason they aren't sharing much beyond the slip.
      1. MR747's Avatar
        MR747 -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        I don't know. I'd like more details but for whatever reason they aren't sharing much beyond the slip.
        these guys are always secretive
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MR747 Click here to enlarge
        these guys are always secretive
        I don't see how it helps them sell turbo kits.
      1. MR747's Avatar
        MR747 -
        me either mate
      1. leveraged sellout's Avatar
        leveraged sellout -
        141 trap is insane for a car like this, clearly it's making some massive hp. Really glad to see this. These things need all the tire they can get and then some, wide body is necessary.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
        141 trap is insane for a car like this, clearly it's making some massive hp. Really glad to see this. These things need all the tire they can get and then some, wide body is necessary.
        The widebody isn't necessary. The car can already fit good sized meat the rear. More than enough to put down some impressive times.
      1. 65AMG's Avatar
        65AMG -
        From what I heard, the car was on 345 drag tires on 18s in the rear.

        I did some research and there was a run with 10.242 @ 129 before , also 1.4 60ft, 1/8 105+ MPH . On the Speedriven Facebook Page there is an article, that they then changed to 100 Octane race gas, made the tire pressure a little bit lower with some more boost at the start and then there was the 9.9 @ 141 - 1/8 108+ run.

        I think there are "worlds" between 129 MPH and 141 MPH, and I am not sure if 100 Octane race gas alone can change the trap speed of a car in that way?

        It would be great, if Speedriven in General would give more info to the crowd to get more customers, but they seem to feel comfortable to be more a kind of a "niche" tuner...
      1. F1BHP's Avatar
        F1BHP -
        I had seen that 1.4 - 60ft also so the car could definitely go quicker than the 9.9sec. I think the reason of some secrets in this case is that Speedriven didn't do the Turbo work it was done by another company but they did do the tune.

        The owner has decided to try to get more out of the car and wants to go even larger turbos with a full engine build, the turbos will have to be relocated, my guess would be towards the front end on the top side. We have very little room under the hood and almost no room in the stock location.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by F1BHP Click here to enlarge
        ecrets in this case is that Speedriven didn't do the Turbo work it was done by another company but they did do the tune.
        Who did the turbo work?

        What happened to the Speedriven turbo setups?

        Click here to enlarge Originally Posted by F1BHP Click here to enlarge
        the turbos will have to be relocated, my guess would be towards the front end on the top side. We have very little room under the hood and almost no room in the stock location.
        The problem is really the room to work with as you highlight. I have no idea how they could fit them in the front but then again that's not my problem to figure out.

        I wish somebody would just try a good K24 hybrid setup out even with the stock manifold design.
      1. F1BHP's Avatar
        F1BHP -
        I am on my second set of K24 hybrid turbos with stock manifold. The first set the turbine wheel was to large for the manifolds to cope with so I was getting blowback.

        The he second time I started with a SL65 turbo with the larger compressor wheel and did a billet turbine wheel setup. This is still in testing and I actually hope to have a base dyno run tomorrow and the custom tune to follow, I will keep you guys updated.

        The consensus is no matter what you do with the stock housing you will be restricted but the manifolds. The guy who comes up with a custom manifold and big turbo kit will be the ones who will find out what these V12 engines are really capable of.

        In the initial testing my new setup the turbos ar spooling up very early, only just over 1,500RPM so I should see some good gains low in the RPM range, what we are not sure of is what impact this will have at the top end.

        i am not sure who did the setup on the 9.9 car, I have just heard it was a friend of the owner.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by F1BHP Click here to enlarge
        I am on my second set of K24 hybrid turbos with stock manifold. The first set the turbine wheel was to large for the manifolds to cope with so I was getting blowback.
        Who did the work? I was always told the turbos were integrated into the manifold so you couldn't mess with them.

        Click here to enlarge Originally Posted by F1BHP Click here to enlarge
        The consensus is no matter what you do with the stock housing you will be restricted but the manifolds.
        That's pretty much what Weistec told me.

        Click here to enlarge Originally Posted by F1BHP Click here to enlarge
        he guy who comes up with a custom manifold and big turbo kit will be the ones who will find out what these V12 engines are really capable of.
        This motor has been on the market for over a decade. What's the holdup?
      1. F1BHP's Avatar
        F1BHP -
        The holdup is space. Sorry I may have misrepresented my turbos. I have had the inside of the turbo housing reworked and larger billet wheels installed. The work was done by Turbo Dynamics in the UK who specialize in the hybrid turbos.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by F1BHP Click here to enlarge
        The holdup is space. Sorry I may have misrepresented my turbos. I have had the inside of the turbo housing reworked and larger billet wheels installed. The work was done by Turbo Dynamics in the UK who specialize in the hybrid turbos.
        Sounds like they do good work.

        You'd think after a decade though somebody would have solid design down by now.
      1. JerryT's Avatar
        JerryT -
        This car is so sexy it just makes me jealous!
      1. 65AMG's Avatar
        65AMG -
        Click here to enlarge Originally Posted by F1BHP Click here to enlarge
        In the initial testing my new setup the turbos ar spooling up very early, only just over 1,500RPM so I should see some good gains low in the RPM range, what we are not sure of is what impact this will have at the top end.
        My consensus is the A/R from the Hotside of Stock Turbo is too small to get the big Numbers at the Top-End.

        A good tuner should do the math, what in theory can be achieved with the stock housing in a 3.0 Liter V6 (Half 6.0 V12). The Black Series Turbos A/R is a little bit bigger than stock which is an improvement as a starting point. The Brabus-Housing with well-designed cast Manifold is even bigger - but way too expensive 20K - but this works good with changed internals.

        The last option is to create a complete new manifold with more freedom for the Turbo-Setup.
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by 65AMG Click here to enlarge
        I think there are "worlds" between 129 MPH and 141 MPH, and I am not sure if 100 Octane race gas alone can change the trap speed of a car in that way?

        ..
        It doesnt!

        sounds to me like....Click here to enlarge
      1. 65AMG's Avatar
        65AMG -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        It doesnt!

        sounds to me like....Click here to enlarge
        This was my first thougt, too...I think we have to wait for more details of the used setup and some new runs...Maybe they changed the map in the faster run etc...
      1. SLS AMG's Avatar
        SLS AMG -
        Click here to enlarge Originally Posted by 65AMG Click here to enlarge
        This was my first thougt, too...I think we have to wait for more details of the used setup and some new runs...Maybe they changed the map in the faster run etc...
        Click here to enlarge Originally Posted by 65AMG Click here to enlarge
        This was my first thougt, too...I think we have to wait for more details of the used setup and some new runs...Maybe they changed the map in the faster run etc...
        We have seen upgraded turbos in 65 AMG's from Renntech doing a best of 10.7 @129, but this car somehow goes 9.9 @141, while trapping 129 on earlier run??Click here to enlarge


        Click here to enlarge

        I dont buy it. They can claim secrecy, but obviously some of us know whats going on
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by SLS AMG Click here to enlarge
        We have seen upgraded turbos in 65 AMG's from Renntech doing a best of 10.7 @129, but this car somehow goes 9.9 @141, while trapping 129 on earlier run??Click here to enlarge


        Click here to enlarge

        I dont buy it. They can claim secrecy, but obviously some of us know whats going on
        Not all turbo upgrades are created equally and going from low to high boost on race gas can easily provide that trap speed spread.

        You're very quick with that BS flag.