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.
- 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
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.
- 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"
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.
- Anti Friction coating
- Improved Hydraulic system
- Direct Replacement for M156 Valve Buckets
M156 / M159 Engine Gasket Set
This is a complete gasket set which will be required when putting an M156 or M159 motor together, simple.
- Complete Set
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.
- 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
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.
- 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