Topgunz full supercharger kits!!

G3RSTY7

What size is on the input shaft 8rib pulley on this kit? I measured it looks close to 3.25” but 928 sells both that and a 3.15” so well within margin of error of my measurement, and how small can we go? Are you calling the 8rib pulley the SC pulley and going for 2.85”?I imagine the limiting factor when you get too small of a pulley there you can no longer achieve proper tension with the tensioner. And since people usually go to a smaller SC pulley with a larger idler instead, does that mean this stock pulley is already nearly at tension limit being as small as can without issue?

GMR was our 7am stomping ground, we were the longboarders there early morning before it got too busy/cops. Ventured over to baldy for a bit just to even attempt it and that’s about all i could do such a steep road into hairpins

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09 G37S RWD 6MT, Topgunz Supercharger, CJM RFS, Walbro 450, 1050x, Nismo 1.5way LSD, Ecutek FF tuned by Seb IG: G3RSTY7 MyG37.com: RickyBobby