Has anyone here upgraded a VFE SC kit?

Carrera4S500 · 11-09-2009, 07:36 PM

VFE / Vortech Supercharger Stage II:
Parts:
0.2” smaller pulley (From 3.8” to 3.6”)
Vortech part number 2A036-361 - $78.95
link - www.vortechsuperchargers.com/product.php?p=42

20mm smaller 6-rib Gatorback belt (Original part number 6PK2655)
20mm smaller belt part number 6PK2635 (can be purchased at AutoZone)
link - www.goodyearep.com/productsdetail.aspx?id=3128

Notes:
System must be retuned for optimal air/fuel mixture following modifications.
Boost, Intake Temperature and Water Temperature gauges should be added.
Water pump power should be rewired to ignition, not accessory (phone).
Water pump LED should be mounted near water temperature gauge.

Expected change:
Dynamometer horsepower from base (445.9) to base + 33.1 (479)
Dynamometer torque from base (327.3) to base + 18.9 (346.2)

Tippy · 11-09-2009, 11:43 PM

I would have a hard time boosting a 11.3:1 motor anymore than what the original kit used.

But, as long as you don't run lean, run too hot inlet temps, or detonate, it should stay together.

There just isn't much margin for anything getting out of whack IMO.

1999Porsche911 · 11-10-2009, 09:13 AM

How much boost AFTER the throttlebody are you getting with the 3.8" pulley? What year car is it?. Your expected change is far too high if you are tallking whp.

SH || NC · 11-10-2009, 09:17 AM

Have uprated other Vortech based kits. Pulley, injectors, and tune, and make sure your charge cooling can handle it as well, and your clutch, and your brakes, and your transmission, and ........

11-09-2009, 07:36 PM	#1
Carrera4S500 New User Join Date: Nov 2009 Posts: 1	Has anyone here upgraded a VFE SC kit? VFE / Vortech Supercharger Stage II: Parts: 0.2” smaller pulley (From 3.8” to 3.6”) Vortech part number 2A036-361 - $78.95 link - www.vortechsuperchargers.com/product.php?p=42 20mm smaller 6-rib Gatorback belt (Original part number 6PK2655) 20mm smaller belt part number 6PK2635 (can be purchased at AutoZone) link - www.goodyearep.com/productsdetail.aspx?id=3128 Notes: System must be retuned for optimal air/fuel mixture following modifications. Boost, Intake Temperature and Water Temperature gauges should be added. Water pump power should be rewired to ignition, not accessory (phone). Water pump LED should be mounted near water temperature gauge. Expected change: Dynamometer horsepower from base (445.9) to base + 33.1 (479) Dynamometer torque from base (327.3) to base + 18.9 (346.2)

11-09-2009, 11:43 PM	#2
Tippy Addict Rennlist Member Join Date: Aug 2006 Location: San Antonio, TX Posts: 4,025	I would have a hard time boosting a 11.3:1 motor anymore than what the original kit used. But, as long as you don't run lean, run too hot inlet temps, or detonate, it should stay together. There just isn't much margin for anything getting out of whack IMO. __________________ Cory - Just a trollin' - 1987 Carrera 3.2 w/single turbo (T60-1/0.85 A/R) Guards Red/Black 427 rear wheel hp/2750 lbs. - granny shifting and steet tire 1/4 mile = 124 MPH @ 12.4 @ 80 degrees, high humidity R.I.P. - I delivered the "Money Shift" - valve float @ 9100 RPM doesn't play well with the exhaust valves/pistons relationship. Expected revival - early 2010 - 2000 996 Aero- Basalt/Beige - Gone @ 102,000 miles

11-10-2009, 09:13 AM	#3
1999Porsche911 Super User Join Date: Apr 2004 Location: Chicagoland Posts: 4,159	How much boost AFTER the throttlebody are you getting with the 3.8" pulley? What year car is it?. Your expected change is far too high if you are tallking whp. Last edited by 1999Porsche911; 11-12-2009 at 08:12 AM.

11-10-2009, 09:17 AM	#4
SH \|\| NC Addict Rennlist Member Join Date: Sep 2008 Location: Cary,NC Posts: 1,354	Have uprated other Vortech based kits. Pulley, injectors, and tune, and make sure your charge cooling can handle it as well, and your clutch, and your brakes, and your transmission, and ........ __________________ 2004 SY GT3