Magnuson "Hammers" the AMG C63








However; individual items are available for purchase from Magnuson that will enable the installer/Dealer to customise the kit to match higher-performance expectations, e.g., fuel-injectors, plug-n-play harnesses, pulleys. Any modifications from the standard Kit, including headers etc, will required a custom tune which can be sourced & supported independently through our Dealers and will probably void any CARB approval (& possibly warranty). If intending to option the Kit with higher-boost options, it is recommended to purchase a Tuner Kit which does not include the standard calibration.
Magnuson will not be releasing "staged packages" - Magnuson builds superchargers, not cars - although there is now a growing range of enhancements available and more are under development.

http://www.magnusonsuperchargers.com/product-p/c63-amg-sledgehammer.htm
Magnuson SledgeHammer Overdrive Kit
The “SledgeHammer” overdrive kit is designed for those AMG M156 applications where a higher level of boost is desired from the Magnuson Hammer Supercharger. Please note that this product should only be employed where the engine and driveline has been appropriately upgraded to handle the significant increase in power and torque that can be achieved with SledgeHammer. Upgraded injectors with plug-n-play harness adaptors are available from Magnuson, however a custom tune will be required. As with any overdrive system, this upgrade will void the Magnuson warranty.
By retaining the OEM 6PK harmonic balancer, FEAD components & belt, the 8PK IFESD (Independent Front End Supercharger Drive) enables a wide selection of supercharger drive ratios without affecting any other components. The overdrive crank pulley is driven via four solid axial dowels that are keyed into the OEM harmonic balancer. An optional installation kit complete with guides, drill-bit & reamer is available for the OEM pulley preparation.The SledgeHammer tensioner is a low profile heavy duty solution that has a wide swing angle and ensures appropriate tension is applied at all times.
Some pics and dyno results in my build thread.
https://mbworld.org/forums/c63-amg-w...ml#post7048638
The Best of Mercedes & AMG




FYI...
As stock was 305whp
Added headers was 349whp, 12.2sec @ 117mph
Added Hammer was 508whp, 5.5psi, 11.1sec @ 128mph
Added SledgeHammer now 575whp, 11.0psi, roasted trans.
... and the SledgeHammer kit is still on the small crank pulley range. Lots more boost available yet
Transmission is finally back and being fitted. I had the DPE headers cleaned up and coated while waiting. Aiming to set a time with the 11psi and then wind the boost up further and probably run an E85 tune




Estimating psi is very subjective to other modifications & the installs thus far have all been on heavily modified applications.
- For reference, a 2.857 ratio typically produces 10.5-11.0 psi (depending on other modifications).
- Utilising an overdrive system voids the supercharger warranty.
If im reading the chart correctly I'm going to assume "70" is standard and "65" would be a step up considering the crank stays 142? Based of your shop car what is the standard psi vs with the step up.
Last edited by Mag1c Carp3t; Apr 24, 2017 at 07:19 PM.
If im reading the chart correctly I'm going to assume "70" is standard and "65" would be a step up considering the crank stays 142? Based of your shop car what is the standard psi vs with the step up.




The typical "showroom-standard" install with a 70 supercharger pulley will run 6-7psi, or ~5psi with headers-no-cats depending on headers brand.
Dropping the supercharger pulley to 65 will add 0.75-1.5psi, however the 6PK belt will be working hard to maintain grip on a 65.
I have tried an "intermediate" upgrade by sleeving the crank pulley to 170, however it still runs the 6PK and is limited in the ultimate output... and is a reasonably expensive exercise for the moderate gains (8-9psi with headers).


