do U/D pulleys harm engine???

8

89lxvert34

New Member

Dec 10, 2003

64

0

0

chicago

Mar 15, 2004

#1

• Mar 15, 2004

• #1

my friend tells me that the u/d pullies rob power from the water pump causing over heating to go on is this true if not wut pullies do u think i should go for

 

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eric88gt

Founding Member

Aug 10, 2000

163

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16

Chisholm, MN

Mar 15, 2004

#2

• Mar 15, 2004

• #2

Underdrive pullies do slow the rotation of the water pump somewhat, but most people don't have any trouble with overheating because of it. The way that underdrive pullies work, is that they use different sized pullies to slow the accessories down, which reduces the parasitic loss caused by the accessories. I've used BBK aluminum U/D pullies for about 3 1/2 years, but I would get steel ones if I had to do it again (which I probably will).
The aluminum is actually wearing away on the water pump pulley.

 

89MustangGX

I have nothing productive to add!

Jul 3, 2001

10,262

1

0

Mill Creek, WA

Mar 15, 2004

#3

• Mar 15, 2004

• #3

Not true. It will make the water pump less effecient, but a cooling system in good shape will have no problems keeping up.

 

8

89lxvert34

New Member

Dec 10, 2003

64

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0

chicago

Mar 15, 2004

#4

• Mar 15, 2004

• #4

so it shouldn't really harm my engine

 

408stroker5.0

The world would be a better place if all males jus

Mar 10, 2004

639

0

16

Bonnyville, Alberta, CANADA

Mar 15, 2004

#5

• Mar 15, 2004

• #5

No. It's that simple man.

 

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eric88gt

Founding Member

Aug 10, 2000

163

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16

Chisholm, MN

Mar 15, 2004

#6

• Mar 15, 2004

• #6

89MustangGX said:

Not true. It will make the water pump less effecient, but a cooling system in good shape will have no problems keeping up.

Click to expand...

That's what I was saying, most people won't have any trouble if you add U/D pullies. If you do, it wasn't the U/D pullies that did it, it was a problem that you had and didn't notice until it was amplified by the installation of the pullies.

 

93tealstang

Founding Member

Jan 24, 2002

1,242

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39

McSherrystown/Hanover Pennsylvania

Mar 16, 2004

#7

• Mar 16, 2004

• #7

eric88gt said:

That's what I was saying, most people won't have any trouble if you add U/D pullies. If you do, it wasn't the U/D pullies that did it, it was a problem that you had and didn't notice until it was amplified by the installation of the pullies.

Click to expand...

Everyone always says this but I have to disagree. Mainly because of the charging issues I've had with underdrives. I will openly declare that they WILL have an effect on charging when running a stock alternator, especially in the summer. I have no problem with stock pulleys, but with underdrives, immediatly I notice a lack of charging. I know, I know......simple solution is a 3G, but I wanted to clarify this for the record that underdrives most likely will have an affect on either charging or heating. This has been proven many of times and not because a problem already excisted.

 

M

mike93lx

Member

May 22, 2003

391

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16

Hudson, MA

Mar 16, 2004

#8

• Mar 16, 2004

• #8

definitely an affect on charging. i still have the stock alternator and my voltage gauge sits at around 10 volts if the car is idling for a while.
on the other hand, cooling is perfectl;y fine.

 

whitemustang89

Member

Dec 15, 2003

166

0

17

in the sticks of arkansas

Mar 16, 2004

#9

• Mar 16, 2004

• #9

cant you just get the alternator and waterpump pulley to fix the prob???

 

393Bird

Founding Member

Jun 26, 2002

244

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0

Clarksville Tennessee

Mar 16, 2004

#10

• Mar 16, 2004

• #10

With underdrive pulleys, you need to decide what your type driving is mostly, and your priorites are. If you do most of your driving in town, and just have to have a 100 watt + sound system , then do not think about getting them. If you spend a lot of time on the highway, and listen to music at normal level, they are worth looking into. Normal water pumps do fine in town, but actualy move too much water at high speeds, and even cavatate from turning too fast at high RPMs. Decide what you want the most, power of blasting music? Do you spend most of your driving in town? The decision is easy.

 

88stangmangt

Active Member

Nov 25, 2003

2,332

1

48

Stafford,VA

Mar 16, 2004

#11

• Mar 16, 2004

• #11

never had a problem with charging as long as you dont blare the system at idle does tend to dim the headlights. no cooling issue's with mine what so ever keeo the rad flushed and in good condition and you wont have a prob.(now the bbk pullies got to go cause i got a blower now)

 

L

leakyfaucet

Member

Dec 19, 2003

273

0

16

North Carolina

Mar 16, 2004

#12

• Mar 16, 2004

• #12

I had the dimming headlights at idle problem and it is VERY annoying. I put in a 3g alternator and that fixes the dimming headlights, but if you have a few more accessories it still dims, although not as much.

My car came with UD pullies and if I had the choice I would not have got them. I've known so many people that say you can't even feel a difference. It's not worth it in my opinion to pay so much money for UD pullies and then have to pay another $100+ just to partially fix the charging problem.

 

FOOT2DFLOOR

New Member

Jan 12, 2004

108

0

0

Williamston, South Carolina

Mar 16, 2004

#13

• Mar 16, 2004

• #13

yeah with my car i can be sittin at idle with the radio on and lights on to and my radio an lights will cut off im gettin a 3G for sure!

 

89MustangGX

I have nothing productive to add!

Jul 3, 2001

10,262

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Mill Creek, WA

Mar 16, 2004

#14

• Mar 16, 2004

• #14

eric88gt said:

That's what I was saying, most people won't have any trouble if you add U/D pullies. If you do, it wasn't the U/D pullies that did it, it was a problem that you had and didn't notice until it was amplified by the installation of the pullies.

Click to expand...

Sorry -- should have quoted. I was referring to the original post.

 

cevtv

Founding Member

Sep 15, 2002

1,113

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37

Massachusetts

Mar 16, 2004

#15

• Mar 16, 2004

• #15

93tealstang said:

Everyone always says this but I have to disagree. Mainly because of the charging issues I've had with underdrives. I will openly declare that they WILL have an effect on charging when running a stock alternator, especially in the summer.

Click to expand...

Not if you get the March "Power & Amp" pulleys. They use an overdrive on the alternator - I've never had a problem in the summer, with the lights and AC on (even before I went to the 95amp 3G).