Underdrive Pulleys
07-31-2010, 08:33 AM
#1
Underdrive Pulleys Review
Saw these on ebay. The specs sound decent.
http://cgi.ebay.com/ebaymotors/03-04...Q5fAccessories
Developed by Vision Motorworks using the latest in CAD design and then CNC machined from a solid piece of 6061 Aluminum billet.
- HARD COATED: Vision Motorworks hard coats all high wear surfaces to increase pulley life. Surfaces are hardened to 65 Rockwel "C" scale. Harder than steel, and two times harder than forged aluminum!
- Will increase Horsepower & torque across entire RPM range.
- CNC machined.
- Reduces the weight at the crankshaft (an average of 2.7 HP is gained from every pound lost off the crank shaft), and parasitic drag loses of the accessories thereby increasing horsepower and torque.
- EXCEEDS ALL OEM belt fitment, alignment and balance specifications.
- Very light for MAXIMUM weight loss at the crank.
- Crank pulleys underdrive all the accessories about 15-20% for maximum horsepower gains without any cooling or charging issues.
- Polished aluminum.
http://cgi.ebay.com/ebaymotors/03-04...Q5fAccessories
Developed by Vision Motorworks using the latest in CAD design and then CNC machined from a solid piece of 6061 Aluminum billet.
- HARD COATED: Vision Motorworks hard coats all high wear surfaces to increase pulley life. Surfaces are hardened to 65 Rockwel "C" scale. Harder than steel, and two times harder than forged aluminum!
- Will increase Horsepower & torque across entire RPM range.
- CNC machined.
- Reduces the weight at the crankshaft (an average of 2.7 HP is gained from every pound lost off the crank shaft), and parasitic drag loses of the accessories thereby increasing horsepower and torque.
- EXCEEDS ALL OEM belt fitment, alignment and balance specifications.
- Very light for MAXIMUM weight loss at the crank.
- Crank pulleys underdrive all the accessories about 15-20% for maximum horsepower gains without any cooling or charging issues.
- Polished aluminum.
Last edited by Escobar; 08-09-2010 at 12:09 PM.
07-31-2010, 02:35 PM
#4
Registered User
iTrader: (40)
Join Date: Jun 2005
Location: Kentucky
Posts: 1,054
Likes: 0
Received 0 Likes
on
0 Posts
I would not personally say that about a product I have not tried or seen a reputable review about.
I have used UR products and they make great pulleys. For my money I would rather go with a proven product.
If you do get them write up a review so people know if these are a good buy.
07-31-2010, 02:36 PM
#5
Registered User
Join Date: Feb 2009
Location: SO-CALI
Posts: 557
Likes: 0
Received 0 Likes
on
0 Posts
i think those are the ones i have on my car?. its been a while since i installed still good..
im pretty sure there it.
im pretty sure there it.
Last edited by CircleHeartX; 07-31-2010 at 02:39 PM.
Trending Topics
07-31-2010, 03:45 PM
#8
I would not personally say that about a product I have not tried or seen a reputable review about.
I have used UR products and they make great pulleys. For my money I would rather go with a proven product.
If you do get them write up a review so people know if these are a good buy.
I have used UR products and they make great pulleys. For my money I would rather go with a proven product.
If you do get them write up a review so people know if these are a good buy.
Last edited by Escobar; 07-31-2010 at 05:31 PM.
it just sounds more professional 
08-03-2010, 10:57 PM
#17
Registered User
Join Date: Feb 2009
Location: SO-CALI
Posts: 557
Likes: 0
Received 0 Likes
on
0 Posts
it should tell you..they also should tell you?? haha im to lazy to go looking for it but if you need the numbers ill get it for you i still have the gates box they came in 
