Love it... lol

 

I was just about to post that same link.

There's also this, which explains a little more:

ATI - Crankshaft Dampers 101

There's also the SAE paper about it. And if none of that is evidence enough, look no further than all major road going cars. Almost all (there are a few exceptions, like the gutless tiny engines from old Hondas, where the weight of a steel pulley was enough to damp the vibrations, and/or balance the rotating assembly. If any of these companies could get away with saving money and putting one cheap ass steel pulley with no rubber to damp the vibrations, they all would.

You WILL see accelerated wear on the oil pump gears, crankshaft bearings, and other parts. There are no ifs, ands, or buts. Ignoring the engineering and science behind it is stupidity.

Tundraboarder666's gutless LE5 didn't make enough power to completely lunch itself before the pulley was removed. Go ahead, ignore GM, ATI, Dinan, SAE advice, etc, and listen to Tundraboarder666. Lap on that pimpy lightweight aluminum pulley on your LNF. Come back and see us when you break something.

 

Its a l61 and makes close to 400whp....
Who's gutless now?

Better get your **** strait before you start talking ****...

 

Sounds too fast and too furious for me. I guess you win! Everyone go get some solid aluminum crank pulleys!

Hope you don't end up like this:

https://www.cobaltss.net/forums/2-0l...broken-263184/

 

I don't think you could be any more correct in this thread.. Not sure why people are being ignorant lol

 

ZZP will only warrant the motor with the ati dampner. That is all you need to know.

 

POW!

 

Burn!

 

some people have gotten em without any problems... jus sayin..

 

Yeah I guess too much for you.

My question in that thread still remains unanswered too...


If I do I'll post it up and eat my own words, until then I will enjoy my gutless car.

 

anyone know who much the ati is? and if they make custom sizes

 

I think it's close to $500.. I was looking into getting one, but that price is ******* ridiculous... They don't make custom sizes, just an underdrive one.

 

^ this guy is my proof lol

 

holy **** that... but underdrive is what im looking for im lsj thou

 

Engineering and science are a bandwagon. Don't get on.

http://www.bhjdynamics.com/downloads...amper_Info.pdf

 

Another that learned the hard way:

evolutionm.net - View Single Post - So let's finally set it straight with aftermarket crank pulleys...

Puts stock damper/pulley back on:

evolutionm.net - View Single Post - So let's finally set it straight with aftermarket crank pulleys...

From David Buschur:
evolutionm.net - View Single Post - So let's finally set it straight with aftermarket crank pulleys...

Every car forum (BBS, and newsgroup for those of you old enough) I've ever been on has had this argument come up. The engineering and science behind this dates back to the 70s if not earlier. Continued ignorance is amazing to me.

 

I'm not even going to begin to point out all the failed comparisons in those posts...

 

This thread makes me lol so hard

Anyways more info on that super damper here: ATI - GM Ecotec Super Damper
Kinda curious about it, for $445 just doesn't seem worth the price. The rib setup doesn't seem right either.
Still trying to find info on how much this thing weighs.



http://www.ecotecforum.com/forums/sh...l=1#post158782

Keep in mind that my rev limit is currently 6600. So I'm not going hardly any over stock. It used to be 7000 when I was N/A, but that was a couple years ago, I had the pulley on for over 3 years..

 

Just cause you havent had issues doesnt mean that its not the cause of ryans failure. Do you have hardened oil pump gears? Im not familiar with your build.

That being said, and I hate to say this, only reason why ryan didnt continue that thread was because he had MPx lightweight pulley and he works for MPx so Im assuming he didnt want to muddy their name. I like MPx products and their company. But light weight pulleys on our engines are bad. No ifs ands or buts. Its simple engineering as wangspeed has stated and as John Powell has stated. Those vibrations and shock need to go somewhere, a lightweight pulley just focuses it back into the engine. You will see a failure, guaranteed if you havent already. I doubt that you would share with us if you did have a failure anyways. youd probably keep that **** secret...

...ATI is the only way to go. As stated before, ZZP will only warranty their builds if you have the ATI. Theres a reason for this

 

All I'm saying is that I haven't experienced failure with it yet. And when the timing was redone I took the timing cover off and the oil pump looked fine.. I don't have the hardened oil gears from GM yet. But its def on my list of future mods. Its slightly reassuring that it was the mpx. But. Who's to say it wont happen in the future... no one knows. What I do know is that I loved it when I had it on the car. And having the stock one on there now I feel and hear the difference that it made for the better... plus with my car with the stock pulley I'm constantly in boost at freeway speeds. With it I don't have to hear my recirc valve venting the entire time I'm driving. Seems more stressful on the engine to be running in boost at freeway speeds all the time than the still to date unnoticed effects of the lightweight crank pulley... kinda curious why ati makes an underdrive pulley... when they harp so much on the bad it does.

 

I get what your saying and thats great for you man, for real. Theres always going to be two sides of the fence on pretty much any part thats out there. Doesnt take away from these type pulleys can be damaging to an engine, thats all. In the end we all do what WE want with our cars.

Question, why are you back on the stock balancer?

 

ATI harps about all the bad a pulley that is not a damper does, and then they mention that most of those are drastically different diameters than stock and that causes issues. Regardless which Ecotec ATI super damper you purchase, they are not a large percentage difference in diameter.

 

What approx. HP and/or torque would you say is a point that you might want to consider a better damper, the ati one for example? I dont think Ill ever get to that point, but just for the sake of argument.

 

Fun thread. Tundraboarders car is a complete beast. been there done that, worked on it my fair share. it is completely different with the lightweight pulley then with a stock one. I too have had both failure and success with lightweight pulleys. I had a 214 horsepower stroked 2.0 zetec (yes ford) back in the day that i ran a lightweight underdrive on for almost 3 years without one issue.

this issue is like EVERY OTHER issue on this site. some people will have it and some wont. some people swear by things while other would never do it in their lives. its a matter of what you are comfortable with. I will say, that for Tundra's car, the pulley makes a HUGE difference. But I will also say that the only pulley that will every replace my stock on is a ATI. just my .02....

 

Its not that it is a hp mod, it will allow you to enjoy the rpm's and hp for a longer period of time, like years compaired to months. Basically your engine wont rattle apart like it may with a cheap version.