Supercharger with a smaller pulley - Mercedes Benz SLK Forum

Performance MODS for the R170 Tuning and Performance modifications for your SLK

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#1 Old 04-08-2019
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Vehicle: R170 200K 2001
Other Toys: MB Vito 639; Yamaha XS400 Seca; Honda Super-Magna; Honda CB500 - project
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Supercharger with a smaller pulley

My car, 200k FL, has M45 supercharger with part no A1110900980. So it has a ~84mm pulley. I bought another supercharger from C230k/SLK230k I guess with part no A1110901080. This one has a 69mm pulley. For sure it's a bolt on job.
What I don't know is this 230k supercharger stock with 69mm, or I founded with a changed pulley?
So for me it's better to have a spare SC & pulley with the same price as a kit pulley alone.
I dismantle it, clean it, grease it, change the oil. These days I will swap it with mine. I used Torque app to see how much boost it makes now, and the top value was 6.3 psi.
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