sc small pulley with crank pulley - Mercedes Benz SLK Forum

General Modifications R170 Details that make your car different

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#1 Old 11-18-2015
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Smile sc small pulley with crank pulley

Hi, everyone
I am Olivia.
I own slk 170 230k which i recently install large crank pulley and k&n open filter.
I experienced increase in power and quite happy with enhanced performance of my car.
Here is my question, If i use Sc small pulley with crank pulley, will i achieve better performance?
Is there anyone complete the similar procedure?
I like to know how it is in reality.
Plus i am concern that it will damage my engine or supercharger?
If it is possible to use sc small pulley with crank pulley, what kind of additional tuning is required?
Thank you and have a nice day
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#2 Old 11-18-2015
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Olivia,

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#3 Old 12-01-2015
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I apologize for not having the SLK specific answer, but I used to have a supercharged 3.8l in a Pontiac... I replaced the pulley with a slightly smaller pulley with great success.

Ultimately the SC is just an air compressor pumping air. as long as you maintain the right fuel/air mixtures and dont build more compression than the engine can handle, you should be good.

My last boosted vehicle was a Mitsubishi Evo so I had the opportunity to build a great relationship with a local speed shop (English Racing) - I highly recommend going and talking to a few, find one you like and can trust...
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#4 Old 12-01-2015
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Welcome from Madrid...
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#5 Old 12-02-2015
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Welcome from New Hampshire, If your going to install a smaller SC pulley I would first send it out and have performance bearings installed. OEM bearings will not handle the RPM's your going to encounter, also I would seriously consider replacing your stock intercooler and all associated hose's to a larger size in order to cool down the increased air temps.
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#6 Old 12-03-2015
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Welcome from New York. I have a 2001 230 and have considered a pulley upgrade. I believe an ecu tune is a minimum requirement to get the engine to run well. Also, bolt-ons get you power but they unbalance the system. I would consider the intercooler upgrade as well as upgrading other parts of the system to insure long term reliability.
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