underdrive pulley...is it safe? - Page 3 - MustangForums.com

Notices
GT S197 General Discussion This section is for technical discussions pertaining specifically to the V8 variation of the 2005 and newer Ford Mustang.

underdrive pulley...is it safe?

Reply

 
 
 
Old 05-17-2007, 05:19 PM
  #21  
white02stallion
 
Join Date: May 2007
Location:
Posts: 47
Default RE: underdrive pulley...is it safe?

I think that my LT purchase and labor was well worth it($2000 w/H-pipe)... I just purchased some BBK UDP's so i will see from there just how much bang you can get for your buck with them
white02stallion is offline  
Reply With Quote
Old 05-17-2007, 05:53 PM
  #22  
Feng Houzi
3rd Gear Member
 
Join Date: Sep 2006
Location: California
Posts: 784
Default RE: underdrive pulley...is it safe?

Do UDP's affect smog tests?
Feng Houzi is offline  
Reply With Quote
Old 05-17-2007, 05:58 PM
  #23  
01Steed
I ♥ Acer
 
Join Date: May 2007
Location:
Posts: 151
Default RE: underdrive pulley...is it safe?

I think too many people overlook the dangers of running a pulley that is not tuned for their specific application. Steeda, for one, only offers one crank damper for all 4.6/5.4L apps. Ford uses a unique damper for each configuration...4.6 3V is NOT the same damper as a 4.6 2V, and on down the line. They are all tuned to dampen natural frequencies which fall into different ranges for each engine type.

That being said, we all know how sensitive our oil pump gears are, and any addedvibration in the rotating assembly is a danger to these gears. I'm not saying you WILL have a problem, just that it's a possibility.

It would be interesting to poll those with oil pump gear failures in otherwise stock trim, and see if they used u/d pullies.

Not a popular opinion, I know. But you asked about risks, and I'm just pointing one out.
01Steed is offline  
Reply With Quote
Old 05-17-2007, 09:33 PM
  #24  
grey06gt
1st Gear Member
 
Join Date: Jul 2006
Location:
Posts: 119
Default RE: underdrive pulley...is it safe?

I'm sure you can come up with a risk to almost any mod though right? Isn't that just sometimes part of doing what we do?
grey06gt is offline  
Reply With Quote
Old 05-17-2007, 09:48 PM
  #25  
01Steed
I ♥ Acer
 
Join Date: May 2007
Location:
Posts: 151
Default RE: underdrive pulley...is it safe?

Oh, no doubt. This one just happens to be one that most people don't think of when doing u/d's. And it could cost you your engine.
01Steed is offline  
Reply With Quote
Old 05-17-2007, 10:13 PM
  #26  
Mikes_BLK_GT
4th Gear Member
 
Join Date: May 2007
Location: Pacific Northwest, USA
Posts: 1,691
Default RE: underdrive pulley...is it safe?

so then if you get pulleys for the right app 4.6L 3V in this case then the risk goes away correct? Steeda claims to have the proper dampener characteristics having worked in ford's tech x-fer program. Now of course this is on the steeda under pulley page so it could be complete bs but steeda appears to be a reputable company.
Mikes_BLK_GT is offline  
Reply With Quote
Old 05-18-2007, 04:06 AM
  #27  
Bluestar
5th Gear Member
 
Join Date: Feb 2007
Location:
Posts: 2,997
Default RE: underdrive pulley...is it safe?

I have the Steed's and have had zeros issues with them, great mod for the money
Bluestar is offline  
Reply With Quote
Old 05-18-2007, 10:19 AM
  #28  
01Steed
I ♥ Acer
 
Join Date: May 2007
Location:
Posts: 151
Default RE: underdrive pulley...is it safe?

ORIGINAL: Mikes_BLK_GT

so then if you get pulleys for the right app 4.6L 3V in this case then the risk goes away correct? Steeda claims to have the proper dampener characteristics having worked in ford's tech x-fer program. Now of course this is on the steeda under pulley page so it could be complete bs but steeda appears to be a reputable company.
I called Steeda, and was told that they only make one crank damper for all V8 modular Ford applications. If there were some way to magically make one damper work for each configuration, one would have to believe that Ford would employ this technology and reduce their complexity in the plant/service parts systemby only needing one damper. Nope, I don't believe they (Steeda) are covering all the bases with some "magic damper".

Like I said, how many people with broken pump gears would attribute that failure to underdrive pullies?? I'm gonna go ahead and say "very few if any". That does not change the fact that it is a real concern, no matter how many people have used them.

I had a set a few years ago, and had several instances when the car ran horribly upon start up, shaking and stumbling and such. I did some research here at work, and learned alot about proper damping. I took them off, and have not experienced that problem since.
01Steed is offline  
Reply With Quote
Old 05-18-2007, 12:21 PM
  #29  
Mikes_BLK_GT
4th Gear Member
 
Join Date: May 2007
Location: Pacific Northwest, USA
Posts: 1,691
Default RE: underdrive pulley...is it safe?

ORIGINAL: 01Steed


I called Steeda, and was told that they only make one crank damper for all V8 modular Ford applications. If there were some way to magically make one damper work for each configuration, one would have to believe that Ford would employ this technology and reduce their complexity in the plant/service parts systemby only needing one damper. Nope, I don't believe they (Steeda) are covering all the bases with some "magic damper".

Like I said, how many people with broken pump gears would attribute that failure to underdrive pullies?? I'm gonna go ahead and say "very few if any". That does not change the fact that it is a real concern, no matter how many people have used them.

I had a set a few years ago, and had several instances when the car ran horribly upon start up, shaking and stumbling and such. I did some research here at work, and learned alot about proper damping. I took them off, and have not experienced that problem since.

All I did was look at thier web site beyond that I havnt researched them. It's better to find out the problems people have had as well as negative info on a particular mod before I find out for myself(usually I have to spend a lot of money to reapair). There are pros and cons to all of the mods we put on cars just a risk vs reward and what you really want form the car. ENough people use them that they probably work well most of the time. Its the rest of that time that would concern me just a question of wether it concerns me enough.
Mikes_BLK_GT is offline  
Reply With Quote
Old 05-18-2007, 12:29 PM
  #30  
tonkpils555666sas
4th Gear Member
 
tonkpils555666sas's Avatar
 
Join Date: Feb 2007
Location: Frederick, MD
Posts: 1,005
Default RE: underdrive pulley...is it safe?

People get longtube headers for other reasons besides just hp gains. I think 20 rwhp is an alright increase with the headers, but also include that it makes the car sound WAY better in my opinion...
tonkpils555666sas is offline  
Reply With Quote
Reply
 
 
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Mr. D
Off Topic
833
06-19-2016 02:04 AM
guitarman376
4.6L (1996-2004 Modular) Mustang
0
09-30-2015 05:54 PM
GimpyHSHS
4.6L (1996-2004 Modular) Mustang
3
09-18-2015 12:27 PM
Boostaddict
Lethal Performance
2
09-08-2015 09:56 PM
v8sn95
4.6L (1996-2004 Modular) Mustang
2
09-07-2015 10:17 AM

Forum Jump

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory