Underdrive pulley- why don't you have one?

[section525]

Nothing for the 5.0L still...

 

[aldive]

Nothing for the 5.0L still...

ASP has it listed; take a look at Dead Link Removed

 

[410Fortune]

All I see for truck 5.0L is up to 97, and I seriously doubt that is the explorer style timing cover and accessories.....would have to call.
the Explorer setup is unique as far as serpentine systems for the 5.0L I am 99% sure
That does not mean an existing pulley will not work, but I dont think that listing on their site covers the Explorer engine (more like Bronco, F-150)

 

[snocross1985]

Way too much money for me. If it was like $100 i might consider, but $300 is way too much money for me. That's two weeks pay for me being a college student. Though I am driving my Ex to school and back 3 days a week (56 miles round trip) and would like increased mileage, the initial investment is way too much. Rather put the money towards buying a second car.

 

[aldive]

UD pullys are a great compliment to your other perf mods (a little here, a little there)
Matbe good for 8/10 ponys.
Downside is they are pricey (got mine on a GB for 260 shipped) plus you need a new serp belt 30 or so bux.
They are a stage 3 mod, only after you get a flasher, intake and exhaust,IMO
Are they worth it? not as a stand alone mod, do they free up H.P. Yep, a little.

My reason for installing the pulleys was for gas mileage, and they definately work in that area,

I have not dynoed since installing mine so I don't have HP data yet.

 

[aldive]

The reason the UDP is expensive is because it is not simply a pulley, but a combination crank vibration damper and pulley.

 

[aldive]

bump

 

[Doubt Incarnate]

i'm too lazy, especialy when its cold out. or when i start working on something its like a homing beacon for people to find and me and talk to me. I cant work, talk, and think simultaneously so i have quite a few unfinished or never started projects.

 

[justin99]

i have yet to find a set for the 4.6. i have used them on my 01 4.0 SOHC and they were great

 

[aldive]

i have yet to find a set for the 4.6. i have used them on my 01 4.0 SOHC and they were great

I couldn't be happier with mine. I am amazed that more folks don't go underdrive.

 

[Jason94sport]

Not sure how they work on an X, but on import cars that I have used them on, I've lost AC output, Alternator output, & had more power steering effort.
I could care less about gas milage. On a 1st gen I doubt there would be very little gain in that deparment anyway.
I also read the 4.0L& 5.0L Ford engines uses a harmonic balancer, & if you disrupt that by swapping pullies you could cause internal engine damage over time.

 

[aldive]

Not sure how they work on an X, but on import cars that I have used them on, I've lost AC output, Alternator output, & had more power steering effort.

I experienced none of these.

I could care less about gas milage. On a 1st gen I doubt there would be very little gain in that deparment anyway.

Must be nice to be able to not have money concerns.

I also read the 4.0L& 5.0L Ford engines uses a harmonic balancer, & if you disrupt that by swapping pullies you could cause internal engine damage over time.

On the 4.0 motors, the harmonic balancerhas the pulley ( crank ) built into the assembly; you replace the entire assembly to underdrive.

 

[spindlecone]

Al didn't swap out your alt pully because of some problem?
No probs here J, alt output at warm idle is 13.8, those that run alot of electronics may have probs tho.

 

[old mechanic]

Al, my situation is a little different. My EX is not a keeper. When it goes I will just replace it. Maybe when I buy a newer one (if my EX ever goes )I will do some of the things that you did. I paid $1,800.00 for my 92 EX 3 years ago and have only spent about $500.00 on it to date including Kris' rebuilt hubs (which work great).
However let be known that I DO keep a watchfull eye :shifty_ey out for your great tips.

 

[95offroadx]

would just adding the underdrive pulley alone make a improvement? without messing stuff up... note: its a 91 explorer without any computer mod.

im considering this when i take out my a/c

 

[expo5.0]

are you selling them?

this is an awful strange thread-

i'm not going to start a list of all the possible good reasons people dn't have them (or why i don't have them), but i don't really see why you'd want that list anyways???

 

[Anime]

Main reasons:

1) It spins the accessories slower. They weren't designed to be spun slower. Because they are spun slower, it does reduce the A/C, alternator, and power steering output, even if you personally can't tell.

2) Risk of spun crank bearings & cost. Paying to have a spun bearing? No.

While there are cost effective benefits to underdrive pulleys, I personally would only use them on a vehicle for extreme performance or racing applications. If the rules don't allow for electric motors to drive the alternator and power steering systems, then an underdrive pulley is a simple and effective way to free up some power.

Most Explorers are daily driven, with the driver more concerned about the comfort and convienence the A/C and electronic accessories provide than extracting the most power from the engine. Easier modifications such as air filters, intakes, and performance mufflers and exhaust systems are probably a better idea for most people.

 

[aldive]

Thanks for your opinion about underdriving.

I have not experienced any of the problems driving daily in Florida, I have only experienjced better gas mileage and better acceleration.

I personally see underdriving as a win win situation.

Again, thanks for commenting.

 

[aldive]

are you selling them?

No.

 

[CDW6212R]

Underdrive pulleys are great, if the factory accessories are already running too fast. Early pulleys brought the alternator speed below adequate levels, I have a 91 LSC with them on, the voltage hovers under 12 volts at idle.

I gather that they are a good idea for the V6 SOHC engine.