do U/D pulleys harm engine???
- Thread starter 89lxvert34
- Start date
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.
The aluminum is actually wearing away on the water pump pulley.
89MustangGX
I have nothing productive to add!
Not true. It will make the water pump less effecient, but a cooling system in good shape will have no problems keeping up.
408stroker5.0
The world would be a better place if all males jus
93tealstang
Founding Member
eric88gt 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. 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.
whitemustang89
Member
393Bird
Founding Member
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
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)
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.
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
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!
cevtv
Founding Member
93tealstang said:
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).
