UD pulley - MustangForums.com

Notices
V6 S197 General Discussion This section is for technical discussions pertaining specifically to the V6 variation of the 2005 and newer Ford Mustang.

UD pulley

Reply

 
 
 
Old 05-07-2007, 10:06 AM
  #1  
TheBlackPearl
2nd Gear Member
Thread Starter
 
Join Date: Jan 2007
Location: MA
Posts: 201
Default UD pulley

What kind of gains would you expect out of an underdrive pulley?


heres one I was looking at

http://www.vmptuning.com/store/index...d=91&parent=46
TheBlackPearl is offline  
Reply With Quote
Old 05-07-2007, 12:00 PM
  #2  
jaded seconds
3rd Gear Member
 
Join Date: Mar 2007
Location:
Posts: 843
Default RE: UD pulley

there are mixed reviews about the UDP. you should be expecting a 5hp-10hp increase if you install. the downside is to some it can be a hard installation, some said that they haven't had any increase in power, and some said that the power comes on 30 minutes after you start your car and the worst i've heard is that some of them have caused damage to the motor, but i'm sure that's on rare occasions.

im probably still going to get a UDP though. i'm still researching on which is the best and so far i think motoblue would probably be the best one. ADP is the cheapest, that's also something to consider.
jaded seconds is offline  
Reply With Quote
Old 05-07-2007, 12:46 PM
  #3  
DelStang86
2nd Gear Member
 
Join Date: Oct 2006
Posts: 383
Default RE: UD pulley

PITA install. takes forever, and you have to get the right tools (may need an air wrench to break the pulley free). I wouldn't bother, and besides, many of the people on the forums have had alternator failure issues after installing.
DelStang86 is offline  
Reply With Quote
Old 05-09-2007, 01:58 AM
  #4  
jettblack06
1st Gear Member
 
Join Date: Nov 2006
Location:
Posts: 55
Default RE: UD pulley

dunno if it really gives you an increase, never dyno'd the car...i can see where the idea of reducing the accessory drive would free up power but im not swearing to it or at it at the moment. been on about 6 months and no alternator/overheating/etc.problems either so dont be scared to do the crank udp.
jettblack06 is offline  
Reply With Quote
Old 05-09-2007, 02:23 AM
  #5  
jaded seconds
3rd Gear Member
 
Join Date: Mar 2007
Location:
Posts: 843
Default RE: UD pulley

ORIGINAL: jettblack06

dunno if it really gives you an increase, never dyno'd the car...i can see where the idea of reducing the accessory drive would free up power but im not swearing to it or at it at the moment. been on about 6 months and no alternator/overheating/etc.problems either so dont be scared to do the crank udp.
did you install it or did you have a shop install it? if you installed it, how'd it go? and if a shop did, how much was the install?
jaded seconds is offline  
Reply With Quote
Old 05-09-2007, 06:16 AM
  #6  
chrisc
5th Gear Member
 
Join Date: Oct 2005
Location: Seattle, WA
Posts: 3,696
Default RE: UD pulley

i got a shop to install mine, it took an hour. you shoudlnt worry about breaking anything with the crank pulley, the alt pulley can and probably will break your alternator
chrisc is offline  
Reply With Quote
Old 05-09-2007, 07:24 AM
  #7  
rmays06
5th Gear Member
 
Join Date: May 2006
Location: DBN, MI
Posts: 2,578
Default RE: UD pulley

I did the Alt pulley, works nice and it was a 15 minute install. No breakage on the alt it still works fine. I got it used for $75 and am happy with the performance I've gotten. Pauls high performance in Michigan sells them. Cheaper than the crank pulley too.
rmays06 is offline  
Reply With Quote
Old 05-09-2007, 11:08 AM
  #8  
scrming
5th Gear Member
 
Join Date: Sep 2005
Location:
Posts: 2,750
Default RE: UD pulley

The crank pulley has been shown to give you 4 to 6 RWHP... a far cry from the claimed gains... Also I found that the recommended belt was to long. It ended up rubbing on my alternator cover which covered everything is rubber dust and messed up my painted cover... also found it slipped a bit...

scrming is offline  
Reply With Quote
Old 05-09-2007, 11:33 AM
  #9  
jaded seconds
3rd Gear Member
 
Join Date: Mar 2007
Location:
Posts: 843
Default RE: UD pulley

ORIGINAL: rmays06

I did the Alt pulley, works nice and it was a 15 minute install. No breakage on the alt it still works fine. I got it used for $75 and am happy with the performance I've gotten. Pauls high performance in Michigan sells them. Cheaper than the crank pulley too.
i found the website. do you knowhow much does he sell them for?it doesn't list the alt pulley on the site. would i have to call them?
jaded seconds is offline  
Reply With Quote
Old 05-09-2007, 06:59 PM
  #10  
rmays06
5th Gear Member
 
Join Date: May 2006
Location: DBN, MI
Posts: 2,578
Default RE: UD pulley

ORIGINAL: jaded seconds

ORIGINAL: rmays06

I did the Alt pulley, works nice and it was a 15 minute install. No breakage on the alt it still works fine. I got it used for $75 and am happy with the performance I've gotten. Pauls high performance in Michigan sells them. Cheaper than the crank pulley too.
i found the website. do you knowhow much does he sell them for?it doesn't list the alt pulley on the site. would i have to call them?
Ya I had to call them for the belt size when i replaced it. I asked them then why they don't have it listed he told me they are working on it. Nice people and good service just probably not the most CPU literate people.....lol
GOOD LUCK!
rmays06 is offline  
Reply With Quote
Reply
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
GimpyHSHS
4.6L (1996-2004 Modular) Mustang
11
03-12-2018 05:16 PM
spdeplayer2
4.0L V6 Technical Discussions
5
10-24-2015 10:45 AM
FivePointToTheOh
2005-2014 Mustangs
9
09-29-2015 01:53 PM
mikesr4565
Suspension
5
09-21-2015 11:26 AM
ctgreddy
Street/Strip
11
09-20-2015 09:35 PM

Forum Jump

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory