but i needs one for my daily driver xfe!

 

Considering the small amount of power that the part gives you, I would *personally* rather not take the chance.

 

So wouldnt a smaller supercharger pulley be just as "damaging"? its all on the same belt resulting in the same thing in the end isnt it? its not weight saving but its spinning everything faster....

 

this article is talking mainly about the effects of removing your harmonic damper which has nothing to do with our cars. a pulley is a pulley. a harmonic damper is something completly different.

"The popular method for making power pulleys on E36 engines is by removing the harmonic damper and replacing it with a lightweight alloy assembly. This is a very dangerous product because this damper is essential to the longevity of an engine. The substitution of this part often results in severe engine damage."

since the harmonic damper on an ecotec is not directly related to our crank pulleys i don't see how this article can apply to our cars in any way unless someone is deciding to remove their harmonic damper

 

From what I understand, no, changing other pulleys doesnt affect the crank in the same way, because you are not lightening the rotating mass of the crankshaft itself, just the load placed on it.

Are you saying that this applies to the balance shafts in the engine, as instead of the crank pulley?

 

ya know what? you want to take the free advice and nit pick it? fine.

apparently some fo you did NOT read the entire article anyways. so i really do not expect you to grasp and form of this concept anyways.

 

i'm just saying this doesn't apply to our cars. and i did read the whole article. i think the problem is that you don't understand the article.
sorry

 

lol ^

 

actually it does apply to the ecotec series.

just like the nissan owners with the vq series think they can run a lightened crank pulley and think it will be ok.

what happened? it starts to leak oil. then makes noise. then the crank dies.

there is a reason why the grand am cars, and the uber lee7 time attack car runs a stock flywheel and a stock crank pulley.

 

/me raises hand
I took it, and will gladly accept any more you are willing to throw out. I'm not afraid to admit that I dont know as much as some other people and I am willing to learn

and damn dude you have some of the weirdest sayings in your sigs sometimes....

seriously?

 

thanks for the info

 

the mrz pulleys fixed this problem that the jbp pulleys were doing with the leaking oil

 

stock flywheels are the weight they are
stock crank pulley's are the weight they are

same thing with the crank trigger.

 

what part do balance shafts play in the internals of the motor?
we can get neutral balance shafts
also as said above gm offers a lightweight crank pulley as well.

im not arguing you nor the article im just trying to better understand it for myself

 

the shafts cancel out vibrations caused by the typical nature of a 4 cylinder itself.

 

And he interrupted me while watching "OWW MY *****!" and that is NOT COOL!

 

i see ati makes a damper for the 2.2 do they for the 2.0 as well?

i see that gm also sells a lighter weight crank pulley as well, whats the deal with that?

 

if the ecotec harmonic damper is sperate from the pulley ( which is what people are saying) you will be fine. if this really is the case the crank has been balanced without the pulley and therefore adding a lighter pulley WILL NOT cause failure.

in my opinion a lighter crank pulley is not worth the money for the amount of power it gives you

 

You are mistaken. Here's the exact rule for that.

7-8.2 The following components may be tooled enough for balancing only - pistons, rods,
crankshaft, harmonic balancer, flywheel and clutch.

And pay careful attention to this rule:
7-8.4 The crankshaft and harmonic balancer may weigh no less than the OEM specification.

Both rules tell you that you can alter the pulley, heck, even use aftermarket, but it must weigh no less than the OEM pulley.
Source: http://media.grand-am.com/assets/KONIRules.pdf

Area, I have nothing but mad respect for you. You are very knowledgeable, and I pay careful attention to what you have to say. I even read articles you post in their entirety. I don't think you need to get upset becasue a few people don't agree with you. After all, many more are paying attention. I'm a noob when it comes to this ****. Since I've already fucked up and installed the Spec lightweight flywheel, figure I might as well go with the MRZ pulley, but what about the balance shaft people are talking about? BTW, my car will be promoted to "toy" soon. I'm looking at getting an Avalanche as a DD (and so that I can tow my toy when it breaks).

 

the stock ecotec crank pulley is in fact a damper.

gmr removed the exedy hyper single, and twin disc clutches from the test cars due to harmonic issues above 7k rpms. these issues resulted in lower end failures. testing was also conducted on lighter crank pulleys and such and resulted in the same failures. the time attack car, and a few others that followed the same shoes so to speak met this fate.

the only issue with the neutral balance shafts is sustained rpms north of 7500 rpms. the shafts spin at twice the crank speed to counteract the vibrations common with 4 cylinders. when rpms are sustained above 7500, you run the likely risk of snapping the shaft, or just destroying the block itself upon the shafts oscar winning performance exiting stage left.

 

so basically under 7k which is what majority of us redline at youll be fine? the failure is mainly above 7k?

 

they met the destructive fate faster due to higher revolutions.

 

Can't believe half these people didn't know the pulley is the balancer.

 

amazing how that works isn't it

 

area, im running a hyper single so is my crank all off balanced now