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  1. #1
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    Weistec Engineering releases M113K (55 AMG) supercharged V8 modular crank pulley

    Introducing a new M113K 55 AMG supercharged V8 pulley option courtesy of Weistec Engineering. This is a dampened pulley that at 6.5 pounds is four pound lighter than the OEM piece. The design incorporates modular and swappable pulley rings meaning one can adjust the boost of their supercharger fairly quickly and easily. The 6-rib harmonic dampener is the same design used in supercharged M156 applications meaning it is well tested and has seen use on the fastest and most powerful AMG's in the world.

    Click here to enlarge

    It is important to note that this design is specifically tailored to reducing vibration. Weistec explains it best, "Every time your engine fires a cylinder’s combustion charge, pulses of torsional vibration are transferred into the crank shaft. These vibrations can become exponentially violent as engine rpm is increased. To dampen these destructive vibrations, the outer housing turns at engine RPM, while the inner inertia mass immediately self-centers and is free to be pulsed by each combustion event. As the inner inertia ring advances and retards itself in relation to the outer housing, the Mu (friction) force through the inertial system transforms the vibrations to heat, which rapidly dissipates through the internal fluid and housing."

    So what are the options? Weistec offers three supercharger ring diameters. 150mm is the stock size and can be used with the Weistec M113K 3.0 liter blower upgrade. There is also a 170mm and 180mm ring which also can be used with the stock or upgraded supercharger. The 170mm pulley overdrives the OEM blower by 13.% and the 180mm pulley overdrives it by 20%. Anything further than this and you will see diminishing returns as the blower is spun out of its efficiency range meaning it is time to ditch the factory 2.1 liter.

    Pricing is $1249.99. Specs and applications along with a dyno graph featuring the 180mm pulley below. Keep in mind you will want to tune for more boost, Weistec's ECU upgrade is here: http://www.weistec.com/m113kecu.html

    Key Features:


    • Drops Weight From 10.5 lbs to 6.5 lbs, Engine only feels 4.75 lbs of the 6.5 lb Total During Acceleration
    • Swap Between 150mm stock, 170mm, and 180mm Supercharger Ring Sizes
    • 10 Minute Supercharger Pulley Swap Time
    • 3% Under Driven 6 Rib Accessory Drive
    • OEM Crank Pulley Bolt Included
    • 17% Overdriven water pump pulley is included to increase cooling and give clearance for larger Supercharger Pulley Rings
    • Includes New Belt to fit your selected pulley size.
    • Industry First, Pinned Hub Design


    Supported Platforms


    • 2002-2004 CL55 AMG
    • 2002-2006 S55 AMG
    • 2002-2008 SL55 AMG
    • 2003-2006 E55 AMG (Sedan and Wagon)
    • 2004-2009 G55 AMG
    • 2006 CLS55 AMG
    • 2003-2010 SL

    Click here to enlarge

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    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  2. #2
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    This was the single best mod I did for my E55 back when I had it. Drop-in filters, Pulley and Tune my car added over 70 wheel horsepower.

  3. #3
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    Anyone who is leaving their E55 stock... why?
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

  4. #4
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    nice, but really confused why they designed their own pulley...
    Eurocharged Performance
    Tuner of the WORLDS FASTEST E55 - 10.46 @ 134.42
    Tuner of the WORLDS FASTEST C32 - 12.33 @ 115.08

    Locations in Houston - Chicago - Boston - DC- Toronto - Hong Kong - South Africa
    Over 30 other dealer locations around the word

    Sales@eurocharged.com

    Over 7000 customers strong!

    Proud tuning partners of Underground Racing!

    Click here to enlarge

  5. #5
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    Click here to enlarge Originally Posted by Jake@Eurocharged.com Click here to enlarge
    nice, but really confused why they designed their own pulley...
    Why?
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Why?
    just the cost and time to design, tooling etc with the lack of market.

    We have sold more pullies easily then anyone and watched the demand decrease dramatically in the last year. The SC pulley still sells decently well, but it's not like they are making any more 55's.
    Eurocharged Performance
    Tuner of the WORLDS FASTEST E55 - 10.46 @ 134.42
    Tuner of the WORLDS FASTEST C32 - 12.33 @ 115.08

    Locations in Houston - Chicago - Boston - DC- Toronto - Hong Kong - South Africa
    Over 30 other dealer locations around the word

    Sales@eurocharged.com

    Over 7000 customers strong!

    Proud tuning partners of Underground Racing!

    Click here to enlarge

  7. #7
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    Click here to enlarge Originally Posted by Jake@Eurocharged.com Click here to enlarge
    just the cost and time to design, tooling etc with the lack of market.

    We have sold more pullies easily then anyone and watched the demand decrease dramatically in the last year. The SC pulley still sells decently well, but it's not like they are making any more 55's.
    The demand definitely has decreased for these models but from what I understand this design also works with their upgraded supercharger system so maybe it's killing two birds with one stone?
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    The demand definitely has decreased for these models but from what I understand this design also works with their upgraded supercharger system so maybe it's killing two birds with one stone?
    makes sense, but then again I also don't see a ton of people going that route on the 55's either.
    Eurocharged Performance
    Tuner of the WORLDS FASTEST E55 - 10.46 @ 134.42
    Tuner of the WORLDS FASTEST C32 - 12.33 @ 115.08

    Locations in Houston - Chicago - Boston - DC- Toronto - Hong Kong - South Africa
    Over 30 other dealer locations around the word

    Sales@eurocharged.com

    Over 7000 customers strong!

    Proud tuning partners of Underground Racing!

    Click here to enlarge

  9. #9
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    Click here to enlarge Originally Posted by Jake@Eurocharged.com Click here to enlarge
    makes sense, but then again I also don't see a ton of people going that route on the 55's either.
    Yeah well compared to a pulley and tune its more expensive. If someone wants the big upgrade it's available. I mean Weistec was already doing M156 kits using the 3.0 liter blower so it didn't cost them a whole ton to do it on the M113K especially considering they had a shop car available for development. It came out after the M156 for a reason.
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    1 out of 1 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by Jake@Eurocharged.com Click here to enlarge
    nice, but really confused why they designed their own pulley...
    Its because every rubber or solid (not dampened at all) unit sold out there lacks the quality and ultimately has issues. We also sell a supercharger system for the M113K and it is vital to design and manufacture parts that work best with it. Talk to us in a few months when you spin the wood-ruff key right off the crank and destroy the snout because you are spinning our system to 20 psi.

    Weistec Engineering
    Last edited by Weistec; 03-12-2014 at 10:09 PM.
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    World's First Supercharged M156 6.3L



    CONNECT WITH US
    www.Weistec.com
    Sales@Weistec.com

  11. #11
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    Click here to enlarge Originally Posted by Weistec Click here to enlarge
    Its because every rubber or solid (not dampened at all) unit sold out there lacks the quality and ultimately has issues. We also sell a supercharger system for the M113K and it is vital to design and manufacture parts that work best with it. Talk to us in a few months when you spin the wood-ruff key right off the crank and destroy the snout because you are spinning our system to 20 psi.

    Weistec Engineering
    Interesting, I didn't realize there were many non dampened units out there. 98% of most issues I see with them are due to improper install as evident by marking on the hub.
    Eurocharged Performance
    Tuner of the WORLDS FASTEST E55 - 10.46 @ 134.42
    Tuner of the WORLDS FASTEST C32 - 12.33 @ 115.08

    Locations in Houston - Chicago - Boston - DC- Toronto - Hong Kong - South Africa
    Over 30 other dealer locations around the word

    Sales@eurocharged.com

    Over 7000 customers strong!

    Proud tuning partners of Underground Racing!

    Click here to enlarge

  12. #12
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    1 out of 1 members liked this post. Reputation: Yes | No
    Looks like top notch quality gentleman ,,

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    Awesome products as usual from @Weistec.
    Click here to enlarge



    EURO 04 M3 Current Mods:GC DAs, Eibach Sways, PF RTAB's, RE RCAs, INTRAVEE II, Black Roundels, ///MFEST Badges, Depo's, Screen protector for NAV display, VCSL Bumper + Race Lip & CF Trunk & CF Rear Diffusor, DIETZ TV in Motion, SS= V1 Headers + catless pipes + X-Pipe + SS Sport Exhaust, Z8 Starter Button, Lamin-X, OEM CSL interior, OEM CSL Steering, OEM CSL Intake, OEM CSL Roof, MSS54HP + OEM CSL Tune, BBS CH's, LIGHTWERKZ, 355mm ST40 BBK, BW Oil Cooler....

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