For those who were waiting for an answer about the weight savings of the Autospeed LW Crank Pulley:

daves4izzle::ASP 3- · 11-15-2007, 11:08 PM

I weighed the stock crank pulley tonight and here is the comparison:

ASP LW Billet Aluminum Crank Pulley: 1.5lbs (24oz)
Stock S4 Crank Pulley: 4 5/8lbs (74oz)

Weight difference: 3.125lbs (50oz)

Here are some pictures:

Z-Tuned (Alex) · 11-15-2007, 11:32 PM

Next question to be answered...was there a noticeable difference?

3.125lbs is a lot of weight off a pulley.

daves4izzle::ASP 3- · 11-16-2007, 06:21 AM

My car is still apart for stage 3 upgrades so I haven't driven the car yet with the new pulley on it.

Additionally, since I am doing so many other major upgrades, I will never know if the ASP pulley makes a difference.

daves4izzle::ASP 3- · 11-16-2007, 06:34 AM

Based on inertia calculations, with every 1 pound taken off of a crank pulley, approximately 2.7hp is gained at the crank due to less force required to spin the rotating assembly (which the pulley is part of).

Additionally, because our motors are FI (forced induction), there may be an even greater gain especially when under boost. Slightly faster turbo spool-up time and quicker progress through the rev range are also benefits of lightening the crank pulley.

So, because the ASP pulley gives us a weight savings of ~3.125 pounds over stock,

3.125 x 2.7 = 8.4375 theoretical horsepower gained at the crank

Now, like I said, this number may ultimately be higher because our motors are turbocharged. Also, the other effects of a lightweight pulley, as mentioned above, are probably just as beneficial as the raw hp gain.

JW944 · 11-16-2007, 08:03 AM

this mod for over a year - do you know if it is balanced? I had someone bring this up in a conversation a while back and I never did find out.

Chaddy · 11-16-2007, 09:41 AM

homer-j-fong · 11-16-2007, 09:45 AM

SRT8 eats 335i · 11-16-2007, 09:47 AM

Nahhhhhhhhhh, it must have just been an innocent little mistake, right?

http://www.autospeedperformance.com/Pulley/Pulleys.htm

Chaddy · 11-16-2007, 11:59 AM

Considering it - us A6 2.7T need all the help we can get to keep up with the B5 chassis.

homer-j-fong · 11-16-2007, 12:11 PM

Its actually under the B5 Passat but not the B5 Audi.

Guess they still have a bit of work to do on the new site. Looks great, but functionality is still a bit under performing.

click

11-15-2007, 11:08 PM	#1
daves4izzle::ASP 3- Member Account #: 110556 Join Date: Jun 2006 Posts: 3,486	For those who were waiting for an answer about the weight savings of the Autospeed LW Crank Pulley: I weighed the stock crank pulley tonight and here is the comparison: ASP LW Billet Aluminum Crank Pulley: 1.5lbs (24oz) Stock S4 Crank Pulley: 4 5/8lbs (74oz) Weight difference: 3.125lbs (50oz) Here are some pictures: __________________ __________________________________________________ __________________________ ASP Stage 3- Current Power Output: 310awhp/320awtq (77F, ASP Mustang Dyno, 93 Octane), 300awhp/365awtq (30F, ASP Mustang Dyno, 93 Octane) Current Best Drag Time: 13.050 @ 106 w/ 1.79 60' (91F, 93 Octane, full weight, Atco Raceway - Atco, NJ) Current Best FATS Time:* 4.72 second (89F, Full tank of 93 octane, full weight) ASP 3- M-Box Tune :: Bosch Motorsport 5-bar FPR :: Borg Warner/KKK RSK04 Turbos :: OEM RS4 Inlets w/ ASP Silicone Couplers :: ASP Stainless Tubular Exhaust Manifolds (Ceramic Coated) :: ASP Stainless 3" Downpipes w/200-Cell High-Flow Cats :: ASP Tru-Dual Cat-back Exhaust Baller Tips* :: ASP Phenolic Intake Spacers :: ASP Street Series Motor Mounts :: ASP Street Series Transmission Mounts :: ASP Street Series Rear Differential Mount :: ASP Drivetrain Stabilizer w/ Energy Suspension Bushing :: ASP Stage 4 Clutch Kit/Stock Resurfaced Flywheel :: ASP Black Anodized Lightweight Crank Pulley :: ASP Black Alcantara Shifter Boot :: Avalon Motorsports Monstrous Oil Cooler Kit :: Evolution Racewerks (Monstrous) Dual SMIC Kit :: Samco Complete Black Silicone Hose Kit :: AWE Vent-Mounted Boost Gauge (New Version) :: AWE Aluminum Sport Pedals :: Greddy FATT Turbo Timer :: APR Bi-Pipe :: Bosch 710N DVs :: H&R Street Coilovers (25") :: Carbotech Bobcat Brake Pads (F&R) :: Goodridge Stainless Brake Lines :: JHM Solid Short Shifter (35%, Stock Height) :: JHM Stiffer Reverse Spring :: JHM Delrin Stabilizer Shaft Bushing :: RS4 Hood Grille :: RS4 Black Alcantara Shifter Knob :: AudiSport Rubber Floor Mats :: Höen Endurance H7 Yellow Fogs :: MotulGEAR 300 Trans & Rear Diff Oil :: Motul RBF600 Brake Fluid :: Ceramic Coated Intake Manifold :: Sportec Airbox Hole Mod :: Hardwired V1 <u>USEFUL INFO</u> Sportec S4 Airbox Mod : ASP Lightweight Crank Pulley Discussion : Motor Pull and Upgrade Pics Part 1 : Motor Going Back in the Car __________________________________________________ __________________________ ACNA#: 33892 ** www.UNTRA.com for all of your IT needs **

11-15-2007, 11:32 PM	#2
Z-Tuned (Alex) Member Account #: 111266 Join Date: Jul 2006 Posts: 3,251	Great post, this is a good one for the archives. Next question to be answered...was there a noticeable difference? 3.125lbs is a lot of weight off a pulley. __________________ *Well gosh darn it, you betcha' that turbo is blown!*

11-16-2007, 06:21 AM	#3
daves4izzle::ASP 3- Member Account #: 110556 Join Date: Jun 2006 Posts: 3,486	Unfortunately, I will never know. My car is still apart for stage 3 upgrades so I haven't driven the car yet with the new pulley on it. Additionally, since I am doing so many other major upgrades, I will never know if the ASP pulley makes a difference. __________________ __________________________________________________ __________________________ ASP Stage 3- Current Power Output: 310awhp/320awtq (77F, ASP Mustang Dyno, 93 Octane), 300awhp/365awtq (30F, ASP Mustang Dyno, 93 Octane) Current Best Drag Time: 13.050 @ 106 w/ 1.79 60' (91F, 93 Octane, full weight, Atco Raceway - Atco, NJ) Current Best FATS Time:* 4.72 second (89F, Full tank of 93 octane, full weight) ASP 3- M-Box Tune :: Bosch Motorsport 5-bar FPR :: Borg Warner/KKK RSK04 Turbos :: OEM RS4 Inlets w/ ASP Silicone Couplers :: ASP Stainless Tubular Exhaust Manifolds (Ceramic Coated) :: ASP Stainless 3" Downpipes w/200-Cell High-Flow Cats :: ASP Tru-Dual Cat-back Exhaust Baller Tips* :: ASP Phenolic Intake Spacers :: ASP Street Series Motor Mounts :: ASP Street Series Transmission Mounts :: ASP Street Series Rear Differential Mount :: ASP Drivetrain Stabilizer w/ Energy Suspension Bushing :: ASP Stage 4 Clutch Kit/Stock Resurfaced Flywheel :: ASP Black Anodized Lightweight Crank Pulley :: ASP Black Alcantara Shifter Boot :: Avalon Motorsports Monstrous Oil Cooler Kit :: Evolution Racewerks (Monstrous) Dual SMIC Kit :: Samco Complete Black Silicone Hose Kit :: AWE Vent-Mounted Boost Gauge (New Version) :: AWE Aluminum Sport Pedals :: Greddy FATT Turbo Timer :: APR Bi-Pipe :: Bosch 710N DVs :: H&R Street Coilovers (25") :: Carbotech Bobcat Brake Pads (F&R) :: Goodridge Stainless Brake Lines :: JHM Solid Short Shifter (35%, Stock Height) :: JHM Stiffer Reverse Spring :: JHM Delrin Stabilizer Shaft Bushing :: RS4 Hood Grille :: RS4 Black Alcantara Shifter Knob :: AudiSport Rubber Floor Mats :: Höen Endurance H7 Yellow Fogs :: MotulGEAR 300 Trans & Rear Diff Oil :: Motul RBF600 Brake Fluid :: Ceramic Coated Intake Manifold :: Sportec Airbox Hole Mod :: Hardwired V1 <u>USEFUL INFO</u> Sportec S4 Airbox Mod : ASP Lightweight Crank Pulley Discussion : Motor Pull and Upgrade Pics Part 1 : Motor Going Back in the Car __________________________________________________ __________________________ ACNA#: 33892 ** www.UNTRA.com for all of your IT needs **

11-16-2007, 06:34 AM	#4
daves4izzle::ASP 3- Member Account #: 110556 Join Date: Jun 2006 Posts: 3,486	Theoretical performance advantage addendum: Based on inertia calculations, with every 1 pound taken off of a crank pulley, approximately 2.7hp is gained at the crank due to less force required to spin the rotating assembly (which the pulley is part of). Additionally, because our motors are FI (forced induction), there may be an even greater gain especially when under boost. Slightly faster turbo spool-up time and quicker progress through the rev range are also benefits of lightening the crank pulley. So, because the ASP pulley gives us a weight savings of ~3.125 pounds over stock, 3.125 x 2.7 = 8.4375 theoretical horsepower gained at the crank Now, like I said, this number may ultimately be higher because our motors are turbocharged. Also, the other effects of a lightweight pulley, as mentioned above, are probably just as beneficial as the raw hp gain. __________________ __________________________________________________ __________________________ ASP Stage 3- Current Power Output: 310awhp/320awtq (77F, ASP Mustang Dyno, 93 Octane), 300awhp/365awtq (30F, ASP Mustang Dyno, 93 Octane) Current Best Drag Time: 13.050 @ 106 w/ 1.79 60' (91F, 93 Octane, full weight, Atco Raceway - Atco, NJ) Current Best FATS Time:* 4.72 second (89F, Full tank of 93 octane, full weight) ASP 3- M-Box Tune :: Bosch Motorsport 5-bar FPR :: Borg Warner/KKK RSK04 Turbos :: OEM RS4 Inlets w/ ASP Silicone Couplers :: ASP Stainless Tubular Exhaust Manifolds (Ceramic Coated) :: ASP Stainless 3" Downpipes w/200-Cell High-Flow Cats :: ASP Tru-Dual Cat-back Exhaust Baller Tips* :: ASP Phenolic Intake Spacers :: ASP Street Series Motor Mounts :: ASP Street Series Transmission Mounts :: ASP Street Series Rear Differential Mount :: ASP Drivetrain Stabilizer w/ Energy Suspension Bushing :: ASP Stage 4 Clutch Kit/Stock Resurfaced Flywheel :: ASP Black Anodized Lightweight Crank Pulley :: ASP Black Alcantara Shifter Boot :: Avalon Motorsports Monstrous Oil Cooler Kit :: Evolution Racewerks (Monstrous) Dual SMIC Kit :: Samco Complete Black Silicone Hose Kit :: AWE Vent-Mounted Boost Gauge (New Version) :: AWE Aluminum Sport Pedals :: Greddy FATT Turbo Timer :: APR Bi-Pipe :: Bosch 710N DVs :: H&R Street Coilovers (25") :: Carbotech Bobcat Brake Pads (F&R) :: Goodridge Stainless Brake Lines :: JHM Solid Short Shifter (35%, Stock Height) :: JHM Stiffer Reverse Spring :: JHM Delrin Stabilizer Shaft Bushing :: RS4 Hood Grille :: RS4 Black Alcantara Shifter Knob :: AudiSport Rubber Floor Mats :: Höen Endurance H7 Yellow Fogs :: MotulGEAR 300 Trans & Rear Diff Oil :: Motul RBF600 Brake Fluid :: Ceramic Coated Intake Manifold :: Sportec Airbox Hole Mod :: Hardwired V1 <u>USEFUL INFO</u> Sportec S4 Airbox Mod : ASP Lightweight Crank Pulley Discussion : Motor Pull and Upgrade Pics Part 1 : Motor Going Back in the Car __________________________________________________ __________________________ ACNA#: 33892 ** www.UNTRA.com for all of your IT needs **

11-16-2007, 08:03 AM	#5
JW944 Audiworld Junior Member Account #: 28118 Join Date: Nov 2001 Posts: 344	ASP LW Crank Pully - thanks for the post, have been considering this mod for over a year - do you know if it is balanced? I had someone bring this up in a conversation a while back and I never did find out.

11-16-2007, 09:41 AM	#6
Chaddy Junior Member Account #: 76469 Join Date: Jun 2004 Posts: 1,763	Thanks; any idea on price? __________________

11-16-2007, 09:45 AM	#7
homer-j-fong Junior Member Account #: 105190 Join Date: Mar 2006 Posts: 1,071	its on their website __________________ For Sale in classified: Nothing at the moment

11-16-2007, 09:47 AM	#8
SRT8 eats 335i New Member Account #: 137770 Join Date: Nov 2007 Posts: 117	Oh snap, so you mean ASP lied about the weight savings then? Nahhhhhhhhhh, it must have just been an innocent little mistake, right? http://www.autospeedperformance.com/Pulley/Pulleys.htm

11-16-2007, 11:59 AM	#9
Chaddy Junior Member Account #: 76469 Join Date: Jun 2004 Posts: 1,763	Ah yes, I was looking at the new website, I see it's only on the old site - $199. Considering it - us A6 2.7T need all the help we can get to keep up with the B5 chassis. __________________

11-16-2007, 12:11 PM	#10
homer-j-fong Junior Member Account #: 105190 Join Date: Mar 2006 Posts: 1,071	its on the new site as well, you just can't browse for it for some reason, need to search for it Its actually under the B5 Passat but not the B5 Audi. Guess they still have a bit of work to do on the new site. Looks great, but functionality is still a bit under performing. click __________________ For Sale in classified: Nothing at the moment

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