Focaljet - Ford Focus Forums - View Single Post - PRODUCT FAQ: 5.7" Vortech/ProCharger/JRSC Supercharger Overdrive Crank Pulley

**Ray** · 02-09-2006, 06:47 AM

I have a 2.62" (10psi) pulley on my vortech setup. However i'm only getting about 9psi on my boost gauge at around 7k (on the dyno). Will installation of a larger crank pulley put me at around 11-12 psi then, and what typical gains are to be expected? Granted, i normally keep my car below 4k, so i'm only seeing a couple pounds of boost with the centrifugal blower.

02-09-2006, 06:47 AM	#13
Ray aka demonfire Join Date: Jul 2002 Location: CT Posts: 26,433	Re: PRODUCT FAQ: 5.7" Vortech/ProCharger/JRSC Supercharger Overdrive Crank Pulley I have a 2.62" (10psi) pulley on my vortech setup. However i'm only getting about 9psi on my boost gauge at around 7k (on the dyno). Will installation of a larger crank pulley put me at around 11-12 psi then, and what typical gains are to be expected? Granted, i normally keep my car below 4k, so i'm only seeing a couple pounds of boost with the centrifugal blower. __________________ Cable Ties. Is there anything they can't fix? Driver > Car - in memory of GaryK *Roadtrippin.org* \| CART