"Whipple" Ultra grip pulley's (no more belt chirp)


pe2unia

GT
Mark IV Lifetime
Le Mans 2010 Supporter
We now have our patented Ultra Grip Pulley’s available to offer to our forum members for the Whipple super chargers or the stock OEM Eaton super chargers. For those of you that have a Whipple on their cars and have belt chirping as well as belt wear we now have the answer that you have been looking for. These Ultra grip pulley's have been around for a long time now with most of the customers coming from the Ford Mustang family (For years Lethal Performance has sold hundreds of these pulleys that were installed on Mustangs with rave reviews). Attached you will see a dyno test with a OEM pulley and the Ultra Grip of the same diameter on a super charged Ford Mustang and notice with the OEM style the humps and peaks due to belt slippage then the after with the Ultra Grip a very smooth more linear dyno graph. My machinist has engraved (“FORD GT”) around the face of the pulley as an added feature for our forum community. Shadowman has just installed the prototype on Ed Simms car and they are both very happy with the results from the pulley. These pulley's will come in raw billet form and made from Virgin 6061 T65 Aluminum and will be sold in a variety of sizes (3.25 & 3.50 for the 3.4 liter) and (3.75 & 4.0 for the 4.0 liter). If anyone would like a specific size not listed please contact me.

The Ultra Grip pulley was designed to reduce belt slippage in 4 manners.

It has a tighter tolerance "V" groove to better grab the belt
It has a flatter tooth as to not go beyond the gripping area and giving the belt a lager surface area to grab
It has a slot that creates a vacuum that keeps the belt from hydroplaning
It has a positive edge to grip the belt better
I has a opposite edge to keep from tearing a belt

For those of you that are interested the pulley will cost $240 plus $15 shipping and handling.

Here is the feedback from Shadowman on Ed Simms car.
http://www.fordgtforum.com/forums/showthread.php?22933-Shadowman-s-quot-Something-Cool-to-Share-quot

Whipple list:
1. Shadowman 3.625 PD/Shipped
2. Shadowman 2-3.500 PD/shipped
3. 2112 3.500 PD/shipped
4. jaxgt PD/shipped
5. CJ428 3.25 PD/shipped
6. GTFUN 3.500 PD/shipped
7. HeritageBruce 3.500 PD/shipped
8. Lorenzo 3.500 PD/shipped

Eaton list:
1. Kingman OEM stock PD/Shipped
2. DanQ
 

Attachments

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2112

Blue/white 06'
Mark II Lifetime
I am in.
 

dbackg

dbackg
Mark II Lifetime
Jan 28, 2009
691
Tempe, AZ
Wow. That looks great!
 

jaxgt

GT Owner
Mark IV Lifetime
Jul 12, 2006
2,240
Want one
Gen 2 Whipple, 3.5 inch pulley !
 
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Aug 25, 2006
4,436
Darm ... my hands......

Yes the pulley is wonderful on many levels

Takes care

Shadowman
 
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Fubar

Totally ****** Up
Mark II Lifetime
Le Mans 2010 Supporter
Aug 2, 2006
3,973
Dallas, TX
Looks nice... can you guys explain this:

It has a positive edge to grip the belt better
I has a opposite edge to keep from tearing a belt
I'm sure it makes sense to the engineers but I'm just a rocket scientist.
 
Aug 25, 2006
4,436
Looks nice... can you guys explain this:



I'm sure it makes sense to the engineers but I'm just a rocket scientist.
It is not an increased grip as in tearing action but rather it is the lack of air pressure between the belt and the pulley that insures a constant and consistent grip; the slots that you see insure that no pressure can build up.

They work and very well

Takes care

Shadowman
 

Kingman

GT Owner
Mark II Lifetime
Aug 11, 2006
4,026
Surf City, USA
I'm in for an OEM version please.
 

CJ428

Farm GT
Mark II Lifetime
Le Mans 2010 Supporter
May 21, 2008
1,358
NJ
I'll need one of those.
 

DanQ

GT Owner
Aug 18, 2005
331
Lake Zurich, IL
I'm interested in a mild one for the stock eaton charger.
Brand dia PSI
1. stock = 3.307 = 12.50
2. Roush = 3.150 = 13.13
3. Metco = 3.000 = 13.78
4. FRPP = 2.884 = 14.33
5. Whipple = 2.870 = 14.40
6. Metco = 2.800 = 14.76
7. Hefner = 2.750 = 15.03
8. Whipple = 2.700 = 15.31
From that thread I think that means I'm looking for a 2.884" or 2.870". Want to stay with stock belt. Do you have that size?
thanks

PM is Ok
Dan
 

pe2unia

GT
Mark IV Lifetime
Le Mans 2010 Supporter
I'm interested in a mild one for the stock eaton charger.


From that thread I think that means I'm looking for a 2.884" or 2.870". Want to stay with stock belt. Do you have that size?
thanks

PM is Ok
Dan
We can do any size you want but I know Hefner's tune typically uses a 2.75 or 2.80 so you will need to let me know.
 

pe2unia

GT
Mark IV Lifetime
Le Mans 2010 Supporter
I have started a list on the first post and I am going to need the size of pulley's needed for each individual so either edit your posts or PM me with the sizes. Later in the week I am going to PM those of you getting a pulley for payment instructions as the plan is to start on them just after the labor day holiday.
 

Awsum GT

GT Owner '05 & '18
Mark IV Lifetime
Sep 17, 2005
3,714
Central California
Shadowman.... I have an exaggerated whistle sound on my GT around 2,000 rpm's. It is a high pitched whistle goes away if over or under that rpm. Will it fix that?
 
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2112

Blue/white 06'
Mark II Lifetime
3.5" Whipple Gen II here.
 

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
No brainer... ordering.

Which one is recommended for the 3.4 Gen II, 3.25 or 3.50 ?
 
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Aug 25, 2006
4,436
Shadowman.... I have an exaggerated whistle sound on my GT around 2,000 rpm's. It is a high pitched whistle goes away if over or under that rpm. Will it fix that?
Hi Awsum GT

Great question; by design the supercharger will have a whistle however not extreme particulalry at a specific RPM as such I would say that which you describe will disappear if the new style pulley were installed.

Takes care

Shadowman
 

2112

Blue/white 06'
Mark II Lifetime
Bill, I have 2 more;

Will you be black anodizing these?

Which diameter would I drop to to go to 21Lbs in the future?
 
Aug 25, 2006
4,436
Bill, I have 2 more;

Will you be black anodizing these?

Which diameter would I drop to to go to 21Lbs in the future?
More great questions

John and I have chatted at length regarding the hard anodizing of the pulleys and in turn he chatted with his machinist and because of the grade of material being used to create the pulleys and the fact that when they have been used in other applications showing no wear issues after usage in excess of 50K miles the hard anodizing step was deemed necessary as such it will remain a personal touch step.

For and those pulleys that I install they will hard anodized black however all that will be shipped will be natural aluminum finish.

Now regarding pulley sizes;

There are many things that affect the measured PSI that any supercharger will create however the solicited Whipple pulley sizes are as follows;

Gen I
17 PSI 3.75
19 PSI 3.50
21 PSI 3.25
Gen II
17 PSI 3.875
19 PSI 3.625
21 PSI 3.375
23 PSI 3.125

Takes care

Shadowman
 

HeritageBruce

GT Owner
Mark II Lifetime
Mar 13, 2006
746
Southern CA
I'd like a Gen I Whipple 19lb 3.5" pulley please.
 

GTFUN

GT Owner
Aug 19, 2009
271
Atlanta,Ga
Just ordered the 3.5 for my Whipple..