***Topgunz ROTREX C38R Supercharger Kit***

GUTCH

I guess I'm reviving this thread.

I was under the impression that a smaller pulley creates higher top end power but less low end torque.

Averying

A smaller pulley on the SC means that it is spinner faster at all times, so you’ll be building boost at a lower RPM compared to a larger pulley… thus more low end torque. Theoretically this also means you have more boost at high RPM too, but the TSG Rotrex kit opts to bleed off additional boost at higher RPM and have constant boost after some set RPM. This would mostly be to protect the engine.


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GUTCH

Interesting.

I read or watched somewhere that a smaller pulley while producing more power by spinning faster is harder to spin. Similar to a higher gear on a bike. And that results in less low end torque. Is that incorrect?

For example here's a source: https://www.aimsindustrial.com.au/bl...ey-speed-ratio