Under Drive Pulleys

99cobra! · December 12th, 2008, 11:20 AM

Are UDP a good mod? I heard that over time they can damage an engine? Just wanting all of your guys input.

BlackedOut04GT · December 12th, 2008, 11:30 AM

They can damage the engine if they are not installed properly. They can also make the engine over heat if you are not careful. I have been told that they are ok to put on a GT model but not really sure about a cobra. All they really do is take away some power from your accessory to get more power from the motor. If you put them in make sure they are a good quality brand and that they are installed properly (ie: go to a good shop). Just keep an eye on the engine temp and you should be good.

Lefty · December 12th, 2008, 11:56 AM

I've heard a lot of stories with the engine overheating because of the waterpump not being able to "push" enough...

bitemark46 · December 12th, 2008, 12:21 PM

They're fine. Just make sure that the crank pulley is a quality piece. March fluid dampner is a great piece. Water pump pullies are fine from any brand. I've ran the original piggy back style on my car for years now and no problems. I think engine failure was due to either the wrong crank bolt or the pulley was not aligned properly.

baine21225 · December 12th, 2008, 01:37 PM

i've heard good and bad, for a small gain i don't think i would take the chance

99blkcobra · December 12th, 2008, 06:38 PM

when i installed my water pump, i didnt berp it. so it only had about 2/3 of water in it. nothing happend drove for about 2 hours with pullies

fox87stang · December 12th, 2008, 08:39 PM

What kind of gains to UDP give?

Lefty · December 12th, 2008, 09:53 PM

Horse Power...probably 8-14

97mustanggt · December 13th, 2008, 03:13 PM

how would you properly install the crank pulley...cause there aint that much room to work with...

Nitrous Injected · December 13th, 2008, 04:15 PM

i have had UDP on my car for about three years i would say and the only problem i have had is the belt tenchaner going out on me...this was probly nothing to do with the UDP.

99blkcobra · December 14th, 2008, 03:43 AM

i didnt feel anything, maybe because i didnt have any tires?

Fluffy The Rhino · December 18th, 2008, 12:30 AM

AT MOST you'd get around 3 HP out of pullies. That's dyno proven. Too many problems with these things to bother with. Too expensive, and not enough gain for the money. You'll get the same amount of power and MORE torque with an intake spacer at half the price. Again, that's dyno proven. And it won't cause any damage to your car. I can't believe so many people still promote pullies. They're pieces of garbage and I have seen way too many problems with them.

futureMACH1racer · December 18th, 2008, 09:51 AM

I wouldn't get them, I had the Steeda UDP's on my Mach, and they caused the bearings to shatter ont he water pump. It's been proven that they cause more harm than good. I will never install them again. There is a great write up in registry about them. Take it from me, I learned the hard way.

December 12th, 2008, 11:20 AM	#1
99cobra! Regular 1999 Mustang Cobra Not Yet Join Date: Oct 2008 Location: North Carolina Posts: 256 iTrader: 0 reviews	Under Drive Pulleys Are UDP a good mod? I heard that over time they can damage an engine? Just wanting all of your guys input. __________________ MM COBRA CLUB #19 "Real cars aren't powered by their front wheels, they lift them"

December 12th, 2008, 11:56 AM	#3
Lefty Resident DJ '01 Cobra Vert. Join Date: Jun 2007 Location: Mechanicsburg, PA Posts: 28,696 iTrader: 12 reviews	I've heard a lot of stories with the engine overheating because of the waterpump not being able to "push" enough... __________________ 2008 Acura TL Type-S (the daily) 2006 Yamaha R6 50th Anniversary Edition (the other toy)

December 12th, 2008, 12:21 PM	#4
bitemark46 Regular Join Date: May 2008 Location: Tampa, Fl Posts: 397 iTrader: 0 reviews	They're fine. Just make sure that the crank pulley is a quality piece. March fluid dampner is a great piece. Water pump pullies are fine from any brand. I've ran the original piggy back style on my car for years now and no problems. I think engine failure was due to either the wrong crank bolt or the pulley was not aligned properly. __________________ -Mark- 98' N/A Cobra (Stock longblock) 11.79 at 114.64 (1.62 60ft)

December 12th, 2008, 06:38 PM	#6
99blkcobra Hardcore Enthusiast 1999 cobra Join Date: Sep 2007 Location: Las Vegas Posts: 1,741 iTrader: 2 reviews	when i installed my water pump, i didnt berp it. so it only had about 2/3 of water in it. nothing happend drove for about 2 hours with pullies __________________ 1999 Mustang Cobra (rebuilding, someday...) 1996 civic dd [/SIZE] MM Cobra Club #3

December 12th, 2008, 08:39 PM	#7
fox87stang Regular 99 Cobra UNK Join Date: Apr 2008 Location: Tyler, Tx Posts: 230 iTrader: 0 reviews	What kind of gains to UDP give? __________________ MM Cobra Club #20 1999 Cobra - Custom black/silver paint, 18" chrome Saleen wheels, BBK CAI, H-pipe, bullet mufflers, FRPP 4.10's and 305 Nitto DR's

December 12th, 2008, 11:30 AM	#2
BlackedOut04GT Hardcore Enthusiast 2004 Mustang GT 14.21@97.93 2.107 60' (Best pass. So far.) Join Date: Sep 2008 Location: Maynard, MA. Posts: 1,855 iTrader: 0 reviews	They can damage the engine if they are not installed properly. They can also make the engine over heat if you are not careful. I have been told that they are ok to put on a GT model but not really sure about a cobra. All they really do is take away some power from your accessory to get more power from the motor. If you put them in make sure they are a good quality brand and that they are installed properly (ie: go to a good shop). Just keep an eye on the engine temp and you should be good.

December 12th, 2008, 01:37 PM	#5
baine21225 MM Fanatic Join Date: Jun 2007 Location: Baltimore, MD Posts: 4,349 iTrader: 1 reviews	i've heard good and bad, for a small gain i don't think i would take the chance

December 12th, 2008, 09:53 PM	#8
Lefty Resident DJ '01 Cobra Vert. Join Date: Jun 2007 Location: Mechanicsburg, PA Posts: 28,696 iTrader: 12 reviews	Horse Power...probably 8-14 __________________ 2008 Acura TL Type-S (the daily) 2006 Yamaha R6 50th Anniversary Edition (the other toy)

December 13th, 2008, 03:13 PM	#9
97mustanggt Hardcore Enthusiast 97GT & 97Snake & 00L T.B.A Join Date: Aug 2008 Location: Richgrove, Ca Posts: 2,183 iTrader: 0 reviews	how would you properly install the crank pulley...cause there aint that much room to work with... __________________ 97 Cobra & 00 Lightning Beauty & The Beast I rev next to hybrids so they can hear me kill the environment MM Cobra Club Member #77 MM Lightning Club Founder

December 13th, 2008, 04:15 PM	#10
Nitrous Injected Regular 2003 Mustang GT 13.987@100.98 MPH Join Date: Oct 2008 Location: Mt. pleasant Posts: 107 iTrader: 0 reviews	i have had UDP on my car for about three years i would say and the only problem i have had is the belt tenchaner going out on me...this was probly nothing to do with the UDP. __________________ 88 NOTCH,351 WINDSER,BUILT C6 TRANY,750 CFM CARB,4:30 GEAR=??? WWIII 2003 MUSTANG GT SOLD with 488 RWHP and 520 FT-LB on 150 shot and bolt ons R.I.P.

December 14th, 2008, 03:43 AM	#11
99blkcobra Hardcore Enthusiast 1999 cobra Join Date: Sep 2007 Location: Las Vegas Posts: 1,741 iTrader: 2 reviews	i didnt feel anything, maybe because i didnt have any tires? __________________ 1999 Mustang Cobra (rebuilding, someday...) 1996 civic dd [/SIZE] MM Cobra Club #3

December 18th, 2008, 12:30 AM	#12
Fluffy The Rhino Bearer of Bad News I has mustang and legacy. Slower than my Ruger. Join Date: Sep 2007 Location: The Fuckening Posts: 2,377 iTrader: 0 reviews	AT MOST you'd get around 3 HP out of pullies. That's dyno proven. Too many problems with these things to bother with. Too expensive, and not enough gain for the money. You'll get the same amount of power and MORE torque with an intake spacer at half the price. Again, that's dyno proven. And it won't cause any damage to your car. I can't believe so many people still promote pullies. They're pieces of garbage and I have seen way too many problems with them. __________________ ~MOD NUTSWINGER~ My Tongue Soothes Razorburn STOPSAYINGFAIL.COM EVERY FART IS A GAMBLE Just Think Of Me As A White Blood Cell.

December 18th, 2008, 09:51 AM	#13
futureMACH1racer I.D.G.A.F. 2009 John Deere 9670 Join Date: Sep 2007 Location: United States of America Posts: 11,346 iTrader: 0 reviews	I wouldn't get them, I had the Steeda UDP's on my Mach, and they caused the bearings to shatter ont he water pump. It's been proven that they cause more harm than good. I will never install them again. There is a great write up in registry about them. Take it from me, I learned the hard way. __________________ RIP Travis Bilings 5/6/1982-7/5/2011 Be polite. Be professional. But have a plan to kill everyone you meet.

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

Threads Similar to: Under Drive Pulleys
Thread	Thread Starter	Forum	Replies	Last Post
under drive pulleys?	rdbrown15	General Tech	4	December 22nd, 2008 02:10 AM
Under Drive Pulleys (New Pics also)	joeice14	2005 - 2010	31	May 13th, 2008 10:19 PM
under drive pulleys	faon	99-04	2	February 6th, 2008 08:55 AM
Under Drive Pulleys	07stanggt	2005 - 2010	10	December 23rd, 2007 11:18 AM
Under drive pulleys	ByPopularDemand	V6 Mustangs	12	April 5th, 2007 02:43 PM

All times are GMT -4. The time now is 01:16 PM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.