Nissan 370Z Forum - View Single Post

TopgunZ · 07-31-2015, 11:19 AM

I wanted to go to the smaller SC pulley from Vortech but their calculator is telling me that with my pulley setup I will already be at 53K. I measured my pulleys and have the following.

Crank 5.75
Serp 2.90 - Black 9psi stillen pulley
Jackshaft - 3.2
SC - 3.2
SCI impellar upgrade

This will supposedly make 12psi at sea level. If all this is correct, then how can a guy make 16 psi if the supercharger is at max revs?

07-31-2015, 11:19 AM	#111 (permalink)
TopgunZ A True Z Fanatic Join Date: Jun 2012 Location: Minneapolis Posts: 2,651 Drives: 06 350Z , 09 370Z MT Rep Power: 6834	I wanted to go to the smaller SC pulley from Vortech but their calculator is telling me that with my pulley setup I will already be at 53K. I measured my pulleys and have the following. Crank 5.75 Serp 2.90 - Black 9psi stillen pulley Jackshaft - 3.2 SC - 3.2 SCI impellar upgrade This will supposedly make 12psi at sea level. If all this is correct, then how can a guy make 16 psi if the supercharger is at max revs? __________________ ROTREX SUPERCHARGER TUNER KITS - $6799/ CUSTOM STILLEN AIR TO AIR KITS -$2100/ 700+ WHP!! WWW.TOPGUNSPEEDWORKS.COM