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    • 4.0 liter Stage X Whipple twin screw AMG M156 V8 supercharger system coming from Yabeela Parts?

      A 4.0 liter twin screw was at one time thought to be too big to package for the Mercedes-AMG 6.2 liter M156 V8. The largest blower to date is Weistec's 3.0 liter whipple twin screw design. This Stage X proposes to take things to 4.0 liters.


      Now, so far BenzBoost has yet to see this monster mounted in an engine bay. Also, there is no pricing information and no posted dyno results yet so this is obviously early.

      Yabeela claims a production version will be ready in three weeks or less which seems ambitious. We certainly hope that is the case.

      It certainly will be interesting to see what a 4.0 liter twin screw is capable of on the M156.












      This article was originally published in forum thread: 4.0 liter Stage X Whipple twin screw AMG M156 V8 supercharger system coming from Yabeela Parts? started by Sticky View original post
      Comments 27 Comments
      1. Bowser330's Avatar
        Bowser330 -
        A 4.0 Whipple on a 6.2l engine should be able to produce 1000hp
      1. 93siro's Avatar
        93siro -
        They should get the TVS2650 instead. I won't be surprised to see the 2650 making similar numbers.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 93siro Click here to enlarge
        They should get the TVS2650 instead. I won't be surprised to see the 2650 making similar numbers.
        It's a fair point. The TVS2650 is a hell of a blower but the 4.0 liter Whipple will eventually out flow it.
      1. 93siro's Avatar
        93siro -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        It's a fair point. The TVS2650 is a hell of a blower but the 4.0 liter Whipple will eventually out flow it.
        Yeah but the thing is whipples are not that efficient. That ZR1 C7 you posted earlier is making the same numbers that a top dog 4.0 427 LS made. I mean that extra 1.4L of displacement should do more than that, besides its so much physically larger than the TVS. The TVS is such a efficient unit no wonder every OEM goes that route.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 93siro Click here to enlarge
        Yeah but the thing is whipples are not that efficient. That ZR1 C7 you posted earlier is making the same numbers that a top dog 4.0 427 LS made. I mean that extra 1.4L of displacement should do more than that, besides its so much physically larger than the TVS. The TVS is such a efficient unit no wonder every OEM goes that route.
        Hard to disagree with anything you said.
      1. MR747's Avatar
        MR747 -
        IT takes alot to move 4l whipple

        Limiting factor here is motor and gearbox
      1. CobraMarty's Avatar
        CobraMarty -
        Twin Screw Whipple vs. Twisted Rotor Roots TVS.
      1. Bowser330's Avatar
        Bowser330 -
        Click here to enlarge Originally Posted by MR747 Click here to enlarge
        IT takes alot to move 4l whipple

        Limiting factor here is motor and gearbox
        both can be built though....Southern Hot Rod has transmission offerings for the transmissions as they were also used in Chrysler's cars (Jeep).
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Bowser330 Click here to enlarge
        Southern Hot Rod has transmission offerings for the transmissions as they were also used in Chrysler's cars (Jeep).
        That is a very good point and I've been meaning to write about it.
      1. PerformanceDefined's Avatar
        PerformanceDefined -
        It is flattering that they appear to be copying so much from the Hammer (& SledgeHammer) kits.
        The Whipple 4.0L is a very large compressor for the M156 application. I trust the designers have considered some of the challenging issues like:
        • The horsepower required to drive the 4.0 twin-screw applies some wild radial & torque loads on the crankshaft & FEAD/FESD components.
        • The mass of the large/heavy rotors have significant inertia that can instigate destructive forces during rapid rpm changes (such as gear changes & rev-limiter events). The drive belt & associated components need to be of appropriate strength to withstand the increased impact loads.
        • Utilising a twin-screw compressor means that the discharge will be hot (due to the physics of the air being compressed within the supercharger on every rotation), so the CAC (Charge Air Cooler) needs to be very large or extremely efficient.
        • Based on the images, the CAC appears to be close to the discharge port and possibly a dual-pass configuration. The placement and effectiveness of the CAC needs to contribute to even distribution of the cooled charge across all eight ports or the resulting lean/rich unbalance can lead to catastrophic results.
        • Although a bypass has no effect to reducing parasitic loss of a twin-screw, the images do not show any method of controlling over-boost. A 4.0L supercharger on a 6.2 engine needs a substantial & rapid method for bleeding boost.


        Exciting times for the M156 community.
      1. RNS-11Z's Avatar
        RNS-11Z -
        Click here to enlarge Originally Posted by Bowser330 Click here to enlarge
        both can be built though....Southern Hot Rod has transmission offerings for the transmissions as they were also used in Chrysler's cars (Jeep).
        You mean the srt8 7spd is same as C63?
      1. 93siro's Avatar
        93siro -
        I guess he's thinking of the old 5 speed not the 7 speed. Or maybe the 8 speed ZF.
      1. Bowser330's Avatar
        Bowser330 -
        Sorry was vague, yes the 722.6 is the 5spd auto, the 7spd is similar though so I’m sure they would be able to help provide parts for beefing it up.

        The srt8s and hellcats are the 8hpXX transmissions now but before up to 2013 they used the 722.6 5spd Mercedes auto
      1. MR747's Avatar
        MR747 -
        722.9 is junk 722.6 can be built very tough and that would be next option for me when 722.9 kicks the bucket for the 3rd time
      1. vaibhav1's Avatar
        vaibhav1 -
        I put my order in over a week ago for this blower for my C63 507 Coupe; stay tuned
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by vaibhav1 Click here to enlarge
        I put my order in over a week ago for this blower for my C63 507 Coupe; stay tuned
        Looking forward to your results!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge
      1. vaibhav1's Avatar
        vaibhav1 -

        Yabeela did not work out for me.

        Aug 1st, was told 3 weeks for it to ship. After the 3 weeks, i constantly asked about the shipment and updates to be only told "we are working on a new revision / shipping in 8 days, 14 days, end of month etc". I finally asked yabeela few days ago the status of my SC, he freaked out, saying i constantly ask them and they're just refunding me everything. I was absolutely disgusted with the way they treated me at the end, and the attitude / tantrum thrown over me asking constantly when my product would be recieved as i had dropped some good coin for it.

        Luckily they refunded me everything. I can't imagine what would happen if i had to trouble shoot issues with their product, with the terrible customer service received.

        I am sure it will be a beautiful product when it comes out, but their customer service was nasty. I felt embarrassed as a customer. I do agree, i constantly asked for updates, as i was becoming suspicious after it was not delivered in the time they told me with very little info and pictures, but that is not how you treat someone after they blindly support you for a brand new product with barely any information.

        I am now happy to be moving forward with Weistec, someone who actually can answer my questions right the first time, and really great customer service. I'm a patient person, but Yabeela really ticked me off. Check out some screenshots of our messages (i happen to delete all messages before their response as i clean out my messages on my phone, etc..but I'm sure they can provide you with screenshots if anyone is actually interested in what I said (literally asked what's the status of the SC shipment).

        I'm sure lot of people have had good things to say about them, and maybe im the one in a few to get treated that way. Maybe I was the unlucky bird. Just wanted to share my experience with Yabeela. Ya, bye bye.

        Attachment 59510Attachment 59509
      1. richpike's Avatar
        richpike -
        Dang. Sometimes you have to “fire” a customer, but based on those IMs that’s ridiculous. It’s always more costly and difficult to find a new customer than it is to keep an existing one. Crazy that they couldn’t handle requests for updates when they kept moving the date.

        I’m also surprised at the number of people who are willing to pay upfront for something when it comes to cars. In almost every other industry, you pay when the product is delivered. Apparently there are lots of shops/companies who can’t fund their own research/development/production. That’s a recipe for disaster for the end customer. Glad it worked out OK for you. I’m sure Weistec will be great!

        -Rich