Ok, I can understand that. If you couldnt afford to drop 3K for a supercharger, why add items that may void your warrenty ( not saying UDPs do, just in case you got an **** service manager), or if the install created a detrimental problem to the engine, at which point you need a new engine? No newlywed, IMHO, should risk that. Its just not worth that much time spent sleeping on the couch

Garrett

 

I installed MotoBlue underdrive pulley on my 2000 about 6-7 months ago and have had no issues at all, and thats running a Ford factory twin electric fan. When I installed the pulley it was pouring down raining, when I finished took my truck for a test drive. Ran the stereo (factory), wipers on high, headlights, AC, the one fan relayed to the AC, pulled to the end of the road and stopped, had no light dimming or issues at idle. AC seems to work fine and have had no cooling issues ever. I believe it has more to do with the location you drive in, we live in the sticks about 27 miles from town so mileage on my truck probably equals out to 85% plus highway type of miles. I wouldn't want a UD pulley if I drove mostily city stop and go style. I also still have the factory battery which will be 5 years old March. Only difference I have really seen is that steering is a little heavier at 1-5 mph and once when it got to 100 degrees stopped at a stop light the AC temp dropped a small amount until we got going again. I only noticed the AC temp drop slightily that one time. I truely believe I noticed more gain hp wise from the UD pulley than going from a Poormans intake to a MAC intake. I give the Pulleys a thumb up if you live in the sticks. There is one more thing to consider about the UD pulley, it is lighter than the stock pulley so you also gain from lighter rotating mass.

 

Ford factory twin electric fan on a 2000 what? F-150? I have never seen an F-150 come from the factory with electric fans. Another thing. I guess if you DID get caught in heavy traffic for long time, and were experiencing charging, cooling or whatever issues, you could just rev the engine to help till you get going again. So it's not that bad. I give pulleys a thumbs up, even though I have not personally owned a set.

 

so whos gonna say it?

 

Say what? Tell me and I'll say it!!!

 

I gotta admit, that's an excellent point that not even I can debate over. You win this one!



Also:

And yet another excellent mind bending comment from our Ford Master Tech!

There I said it.

 

Crazy, that's what.
Joe, niiiiice...

Everyone else:
I am curious about cams, i'm going to start the next thread!

 

AHA! I've just been edumacated!

 

Hmmm..........
This UDP discussion has got me curious.
Question: can you keep the same size serpentine belt, or do you have to find a different (length) belt that will work?

 

You will need a different belt. If you buy the pulley online though, most places sell the correct length belt also.

 

Glad I can help laymans understand this stuff, Joe.

 

Yea, most people use the 101" belt I think. If not that then depending on your truck, you would go either 100 or 102...something like that. They usually run about 30 bucks or so.

 

i heard a rope dipped in pancake syrup works just fine. or molasses

 

As long as you don't use too much syrup, it works great!

 

Agree with V6Mustang. I have had the pullys on a 94 Mustang Cobra with lots of other mods for over five years with out a problem and the original battery. This was my last mod. Before the car had the muscle car twitch in the way it drove due to an oversized throttle body. When I brought the car home and my wife drove it for the first time she wanted to know what I did and why I had not done it much earlier be cause the car drove so much better.

Looking to do it on my 2004 F150 V6.