• Weistec Engineering releases M156/M159 V8 (63 AMG) internal engine components including forged pistons/rods and head studs

      Well here is what we have all been waiting for, forged internals for the Mercedes M156/M159 V8 and associated hardware from Weistec. These are the upgrades necessary to take already ridiculously fast Weistec supercharged M156 V8's to the level of shock and awe. The parts available are forged pistons, forged rods, head studs, gaskets, and valve buckets. These parts are all detailed below with specifications and pricing. The M156 and M159 game just entered the next level.

      M156 / M159 Forged Pistons and Billet Rods



      To upgrade the power handling potential of these V8 engines strong forged internal parts are necessary. The pistons and rods obviously are key pieces. The piston tops are ceramic coated to increase heat resistance and the skirts are teflon coated for reduced friction. Material for the rods is 4340 billet steel obviously much stronger than the stock pieces. The pistons retain the stock compression and these parts will support 1000+ horsepower.

      Key Features:


      • Ceramic Coated Piston Tops
      • Teflon Coated Pistons Skirts
      • Billet 4340 Connecting Rods
      • Improved Wristpin Design
      • Performance Ring Set Included
      • High Strength/Quality Design and Construction
      • Increased Power Capacity and Heat Dissipation


      Price: $6089.00

      Pictures:





































      M156 / M159 Head Studs

      Weistec partnered with ARP (Automotive Racing Products) for the head studs, a company hardcore performance enthusiasts should be familiar with as their stellar reputation precedes them. When going for big power a common issue is the head lifting. Obviously one wants to avoid this and keep the coolant, oil, and air charge in each respective cylinder sealed nice and tight. These head studs offer 260,000+ PSI of tensile strength ensuring the head will be held down with much greater force than the stock studs. This will help avoid potential oil leaks or engine issues related to the mating of the head and block.

      Key Features:


      • 260,000 psi Tensile Strength
      • 255,000 psi Yield Strength
      • Complete replacement of factory head bolts
      • Improved Head to Block connection eliminating leaks
      • Reusable, unlike the factory bolts which are "one time use"


      Price: $899.95

      Pictures:











      M159 Valve Buckets

      This part deals with the issue many have been discussing regarding premature wear in M156 motors that BenzBoost famously broke in September of last year. The issue is accelerated wear due to the materials used in the valvetrain components. Weistec explains the M159 valve buckets this way, "Many M156 valve buckets are prone to "bleed down" resulting in excessive valve lash during cold start up, commonly heard as a loud tapping noise until the engine fully reaches operating temperature. Excessive valve lash is a major contributor to accelerated valvetrain wear. The M159 engine, used in the SLS and SLS roadster, features valve buckets that are of an improved design. The M159 valve buckets feature an anti friction coating to reduce wear on the camshaft lobes. They also have an improved hydraulic system that will not "bleed down" like the M156 valve buckets. Installation of M159 valve buckets will help prevent any premature wear to your engine's valvetrain and make for a quieter engine on cold starts."

      Some owners do not take this issue as seriously as others and this case is still pending but good advice is better safe than sorry.

      Key Features:


      • Anti Friction coating
      • Improved Hydraulic system
      • Direct Replacement for M156 Valve Buckets


      Price: $792.95

      Photo:



      M156 / M159 Engine Gasket Set

      This is a complete gasket set which will be required when putting an M156 or M159 motor together, simple.
      Key Features:


      • Complete Set
      • OEM


      Price: $695.95

      Photo:


      M156 / M159 Built Engine Service


      Every part listed above except for the valve buckets (although highly recommended) is required for an engine build. Weistec obviously requires your motor which will be inspected and torn down. The block cylinders are then honed for the new pistons and the head is inspected. The engine will use all new bearings, gaskets, seals, and O-rings. After all this is done, one has a 1000 horsepower capable M156 or M159 motor. Weistec ported heads are obviously optional.

      Key Features:


      • Ceramic and Teflon Coated Pistons
      • Billet 4340 Connecting Rods
      • All New Bearings
      • Fully Balanced Rotating Assembly
      • All New Gaskets, Seals, and O Rings
      • +1000hp Capable


      Price: $2500.00 Labor

      Photo:



      Gentlemen, this is the absolute pinnacle of the M156/M159 tuning scene. The supported platforms are listed below, every car with an M156 or M159 motor from Mercedes. If you want the best, this it it.

      Supported Platforms


      • 2008-Present C63 AMG (Sedan and Wagon)
      • 2012-Present C63 AMG Black Series
      • 2007-2008 CLK63 AMG
      • 2008 CLK63 Black Series
      • 2007-2010 CLS63 AMG
      • 2007-2011 E63 AMG (Sedan and Wagon)
      • 2007-2010 S63 AMG
      • 2007-2011 ML63 AMG
      • 2007 R63 AMG
      • 2008-2010 CL63 AMG
      • 2009-2011 SL63 AMG
      • SLS 63 AMG
      This article was originally published in forum thread: Weistec Engineering releases M156/M159 V8 (63 AMG) internal engine components including forged pistons/rods and head studs started by Sticky View original post
      Comments 49 Comments
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by masonh Click here to enlarge
        any weight savings here on the rod/pistons?

        what grade steel are the factory rods?
        Let's ask, @Weistec
      1. BK63AMG's Avatar
        BK63AMG -
        This is great! Just imagine a fully built M156 Supercharged...monstrous!
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by BK63AMG Click here to enlarge
        This is great! Just imagine a fully built M156 Supercharged...monstrous!
        Oh they are going to be strong.... very strong.

        Wish I knew this was coming when I bought my car.
      1. masonh's Avatar
        masonh -
        i have 74k on my '07,was going to trade it on a '12 in a couple of years,but i may just re-build and supercharge.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by masonh Click here to enlarge
        i have 74k on my '07,was going to trade it on a '12 in a couple of years,but i may just re-build and supercharge.
        Rebuild and supercharge isn't a bad idea. It will blow you away.
      1. c32AMG-DTM's Avatar
        c32AMG-DTM -
        Nice looking setup. Curious why they'd put "C63" on the con rod, instead of "M156/9" - anyone know?

        Also - are the rods Pauter? They look like them. Swaintech for the coatings?

        Looks well thought out - look forward to the dyno and track results from one (or more) of these beasts.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by c32AMG-DTM Click here to enlarge
        Nice looking setup. Curious why they'd put "C63" on the con rod, instead of "M156/9" - anyone know?
        Could be that particular rod was for a C63, not sure though.

        Click here to enlarge Originally Posted by c32AMG-DTM Click here to enlarge
        Also - are the rods Pauter? They look like them. Swaintech for the coatings?
        This is something @Weistec will have to answer.
      1. Even Money's Avatar
        Even Money -
        Any driveline upgrades in addition to the motor and tranny? Driveshafts, axles?
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by Even Money Click here to enlarge
        Any driveline upgrades in addition to the motor and tranny? Driveshafts, axles?
        http://www.benzboost.com/content.php...ber-Driveshaft
      1. ecampbell's Avatar
        ecampbell -
        Click here to enlarge Originally Posted by c32AMG-DTM Click here to enlarge
        Nice looking setup. Curious why they'd put "C63" on the con rod, instead of "M156/9" - anyone know?

        Also - are the rods Pauter? They look like them. Swaintech for the coatings?

        Looks well thought out - look forward to the dyno and track results from one (or more) of these beasts.
        I believe those shots were of my pistons before they were installed. The engines are very streetable but as soon as you look at the go pedal they start to growl!

        Fairly soon I will have the time to take to the track and will let you know my thoughts.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ecampbell Click here to enlarge
        Fairly soon I will have the time to take to the track and will let you know my thoughts.
        Really looking forward to this...
      1. 600whp S4's Avatar
        600whp S4 -
        If some one gets me one stock piston i can get them made by the best for $2500 a set and rods for $1500
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by 600whp S4 Click here to enlarge
        If some one gets me one stock piston i can get them made by the best for $2500 a set and rods for $1500
        Good luck with that and then tuning and everything else.

        This isn't quite that simple.
      1. JRCART's Avatar
        JRCART -
        Wait til you guys see the carbon fiber driveshaft...I shot a load when I saw it.
      1. ecampbell's Avatar
        ecampbell -
        Click here to enlarge Originally Posted by 600whp S4 Click here to enlarge
        If some one gets me one stock piston i can get them made by the best for $2500 a set and rods for $1500
        LOL ok....
      1. JRCART's Avatar
        JRCART -
        Click here to enlarge Originally Posted by ecampbell Click here to enlarge
        LOL ok....
        Ya, like it's that easy. If it were that easy he would have already done it. Like he's gonna just call up JEGS or Summit and get a set.
      1. Benz-O-Rama's Avatar
        Benz-O-Rama -
        Sometimes, you just have to stop and Click here to enlarge
      1. George Smooth's Avatar
        George Smooth -
        Click here to enlarge Originally Posted by 600whp S4 Click here to enlarge
        If some one gets me one stock piston i can get them made by the best for $2500 a set and rods for $1500
        I am sure the pistons can be made at a good price but I would personally rather spend a extra US$2000 knowing its tried and tested and there will be no second guessing when it comes to the reliability and functionality of those key parts.
      1. ecampbell's Avatar
        ecampbell -
        Click here to enlarge Originally Posted by George Smooth Click here to enlarge
        I am sure the pistons can be made at a good price but I would personally rather spend a extra US$2000 knowing its tried and tested and there will be no second guessing when it comes to the reliability and functionality of those key parts.
        George, also remember he is quoting stock pistons presumably using the stock specs. I wonder how much extra for the R&D to relocate the ring lands and for the strengthened wrist pin design.
      1. c32AMG-DTM's Avatar
        c32AMG-DTM -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This is something @Weistec will have to answer.
        Do they (Weistec) still post here? Any word if they got your "at symbol" notification?