Alternator pulley comparsion.wmv

[@foonme99]

Excellent demonstration! We use Litens OAD pulleys on our special 350-amp AD244-style alternators. Alternator fuel efficiency and current output is also increased because the rotor rides the momentary highs in crank RPM rather than being slowed down by the lows. It makes for a better outcome for the customer, and is a selling point of whiz-bang new tech.

[@AlfOfAllTrades]

I have just a few days ago had this exact experience in my own car. It really makes a HUGE difference.

[@Litens-Aftermarket]

All the pulley types shown are being used under the exact same conditions, no matter what age the tensioner and belts are. It shows the difference between using an OAD and other alt pulley types. Also, we did not use a 2011 pulley because this video was filmed in early 2010. They may have improved, but the real test is to see how many OE platforms they get business on long term. Our company designed the first belt tensioner ever and continues to be the industry leader.

[@Litens-Aftermarket]

@midwestraptor New lean system models are being designed by the car manufacturers with the OAD in mind. Please note many people think replacing the OAD with a clutch pulley does not cause problems because they are looking at the alternator. However, the problems will most likely arise in the other components of the system (i.e. tensioners, idlrs, waterpumps, etc). Yes, clutch pulleys are cheaper due to them including far fewer internal components than OADs.

[@philhealey449]

Would like to see a new tensioner (with working damping) for performance and cost comparisons, but I see the point on belt drives being challenged by crankshaft speed fluctuation battling the inertia of the alternator rotor. Not normally an issue with short individual vee belts, but I've seen this flapping on my Unimog's long fan belt drive and not really thought about why. Lifespan and reliability of yet another mechanical component is of concern as if today's vehicles aren't suffering enough already from complication.

[@Litens-Aftermarket]

Please note, regardless of the tensioner's condition the same components (including the tensioner) are being used in every instance shown on this video.

[@chuckpullins8267]

You are able to purchase an OAD at NAPA, Advance, O'Reilly's, or Carquest. Thank you.

[@davidparker9676]

Excellent comparison demonstration. I also enjoyed seeing the internal differences between the two designs. The internal spring appears to make the huge difference in NVH. Does Litens make a OAD pulley for the 1998 VW Jetta TDI 1.9L with the Bosch 120A alternator? If you have a part number and vendor, that would be very much appreciated.

[@warnacokelat]

This explains much of my problem.

[@ModorFix]

that is a great video! Where can we get these pulleys?

[@ghulabkhan5231]

Very nice

[@l82nite]

But how long will it last???? Had to replace so many alt because the clutch went bad. Never had to do that before with the solid pulley.

[@Litens-Aftermarket]

The OE's require the OAD's to have the same life as other accessory drive components. Due to today's vehicles having smaller rougher running engines with more electrical requirements the OAD is necessary to smooth out the NVH (noise, vibration, and harshness) of the accessory drive system. Yes 20+ years ago all that was needed was a solid pulley and they did last a long time, but as the video shows a solid pulley is not capable of controlling the NVH which would lead to premature failure in other system components such as the tensioner, waterpump, etc...

[@elbonk178]

Are these available for 3.9 liter cummins diesels with AC Delco alternators? The belts bounce around and of course the alternator squeals at shut down.. These make so much sense.

[@immjem1998]

I can see that you used diferents pulleys in order to explain tje differences, but my question is if on my car have installed from factory something different Can I use the last pulley (Litens OAD) that you show in the video????

[@Litens-Aftermarket]

Our recommendation is to use the pulley that was installed from the factory in most cases. One case where this is not the case is the Ford Crown Victoria we designed a retrofit option.

[@Sheezle69]

I am trying to change the belt atm, but i can't get the tensioner low enough to get it on, is there a special Trick?

[@stickboyfpv4742]

Wellll whatd ya do... replace just the spring? I would have just replaced the whole thing for $30..

[@Namaan87]

I have a Mondeo 2.2 155bps and my car suffers from this failure. If I understand, I am researching, if you remove the pulley and diesel version we put the pulley petrol version, this solves the problem.

[@AN-kg4ei]

are these being used as OE on any vehicles yet? very interesting concept... I am just doing an idler and will do a 5.7 hemi alt pulley next - I will have to give this consideration....

[@Litens-Aftermarket]

+A Nixon We are the aftermarket division of Litens Automotve who is the #1 tensioning product company in the world on the OE side. All OAD's sold (except 1) are OE on vehicles. There are 150 million vehicles worldwide with OAD's installed at the OE level. Almost all Toyota, Chevrolet, Chryslerm and Hyundai to name a few.

[@Sroor90010]

Nice 👍 that’s why oem is so expensive 😅 but if you reduce size of the belt I think it’ll be ok shorter belt prevent movement 🧐🧐🧐

[@roman_bor74]

Не всё так просто под Луной 😀

[@benjaminnevel6562]

Does anybody know if Overrunning Alternator Decoupler is available for a Dodge Dakota V-6 1998?? I would really aprecciate having such feature in the engine for smoother and more confortable idlle.

[@alieddine]

Sehr Gut

[@MecaEvolution]

When the bearings failed, it destroy the alternator.

[@Victornunes285]

Brazil

[@bensmith88]

Would be more believable if the tensioner didn't look totally worn out to start with. Still, very interesting.

[@emilpokorny2337]

Iñ

[@KimLem-gs6fz]

2.4 tdci

[@kiselevkons]

Бегу покупать обгонную муфту вместо шкива - срочно!

[@techdavey3486]

The real reason for fitting free-wheel pulleys is to get money off the motorist. Sensible drivers change speed or change gear when vibration is felt. This is quite important if one's car has the infernal and dreaded Dual Mass Flywheel. In England a perfectly reputable supplier of reconditioned alternators, no longer supplies them with free-wheel-pulleys. The reason being that the pulleys break-up.