Celica Forums General Discussion Engine and Performance unorthadox racing pully?

i have a 01 gts and used the crank pully and cracked the block...has anyone ever tried to sue them for damages cause it just cost me a whole lot of time and money???

Damn!!! I guess anyone are right about staying away from this pulley! Didn't know it could do that much damage!!! Good thing I didn't buy it yet! How long have you had it before your block cracked? Is it bad???

this is why we tell everyone NOT to buy it.

sux you had to become a lesson for others.


you wouldnt have any grounds to sue them. my advice is bite the bullet and simply buy a new motor.

MWR has fully built ones for $5k or you can get a stock one around $1800 usually.

okay i have a question...is just the individual pulley thats causing the probs? i was thinking about buying the unorthodox racing pulley set..the one that comes with 3 pulleys...is there any other pulleys out there other than unorthodox>???

The Danger of Power Pulleys &
Understanding the Harmonic Damper

http://www.atiperformanceproducts.com/products/dampers/damper_dinan.htm

Quoted from another site:

"4wheeldrift
Crank pulleys fall somewhere between your basic bolt ons and more invasive mods. Some cars respond very well to pulleys, others do not. On most modern cars, your crank pulley also acts as a harmonic dampener. On some cars they will run forever without this dampener, others will kill the bearings in less than 10k. Its a big crap shoot really. Reducing rotational inertia is always a good thing, but you have to weigh the potential for reduced engine life. Most hard core built motors use them, but at the same time most of those race motors are also only being asked to run 1000 kms before a full rebuild. That said, I've got a UR crank pulley on my car. Its not a mod you'll generally notice much from on its own, but combined with intake/exhaust/header type mods it can make a difference."

http://forums.beyond.ca/showthread/t-992.html

Quoted from yet another site:

Underdrive Pulleys Our Testing
by James Walker, Jr. of scR motorsports

"In general, the other pulleys in the system are not sensitive to weight like the crankshaft pulley, so harmonic imbalance is not a concern here.

If you do decide to underdrive, though, be aware that while there may be a slight horsepower gain (read more on this below), your components will not be operating in the ranges determined by the factory.

If you are on a race track at constant high RPM, this may actually prolong the life of these components, but on the street, it could go either way a water pump or power steering pump which is designed to operate at a given speed may not be as efficient as necessary when underdriven.

So, in light of the fact that 3 HP was completely without a belt, we estimated that the best we could do was to underdrive a few components by 20% - or a theoretical 0.6 HP gain (3 HP x 0.2). After that, it hardly seemed worth it to try to custom fabricate pulleys for less than a 1 HP gain.

I know, I know stock pulleys, like stock suspension bushings, arent sexy, and you cant brag about them in the pits|but in racing horsepower talks and marketing BS walks. We chalked up this exercise as yet another learning experience in the quest for REAL horsepower. Maybe someday well find some.
"

http://www.teamscr.com/pulleys.htm

the whole set is no better than the one you have.

I hate to say it, but I think I have to pull the BS card on this guy.

Post #1 from him and hasn't replied. People get so wound up over the net. Plus, I bet you he ragged the shit out of the car, bouncing it off the rev limiter. bla bla bla. I am not even wasting my breath over this one.

Dan

^^ yeah, and what do you know lol. his results are dead-on consistent with the results of others who I know are credible.

You're right. I may not know. But I have not heard from anyone besides someone on the internet.

lets see this brings the running tally of engine failures to 6 out of 10 reported

2 of those were in the first month of undampened crank pulley usage.

I'm unfortunately on that list, as I had an oil pump failure due to the pulley. I have tried to warn people since then but some people prefer to live & then pay & then learn.

can you upgrade your oil pump to avoid the failure?

Harmonic Damper...thats all that causes the problems

its not a matter of upgrading the parts that will break or fail from the use of an undampened crank pulley because while those parts are stronger its only putting a band aid on the problem, those newere stronger parts will eventually suffer the same fate as the stock weaker ones.

it's amazing...there are so many threads on the UR crank pulleys yet people still buy them...

well now im conviced...i wont get one...does anyone know of any other engine parts i can get other than headers, CAI?

who makes a performance oil pump for us?

i have been using the ur pulley set for years now and neverhad a problem.
i was trying to do a comparrison of the stock pulleys vs the year the car was manufactured, because i am of the opinion that maybe a few of the pulleys were defective. reason being, i have seen 4 pulleys up close and personal and many more on the net and the 4 that i saw only two were identical in terms of balancing holes (number and size) those online all had diffrent number of balancing holes as well. THIS IS UNUSUAL FOR A STOCK OEM PARTS!

IS THIS PROBLEM JUST WITH THE CRANK PULLEY. I WAS THINKING OF PUTTING A ALTERNATOR PULLEY ON MY GT.

AEM is the only one that won't harm anything.

UR makes the alternator and water pump pullies as well as the deadly crank.

I haven't had a chance to put the alternator and water pump pullies in, but I assume that will be fine (esp. w/p), right?

yeah i hope an aem alt pulley wont harm anything and i cant see any harm in the water pulley either

i was thinking if i use the UR water and alt pullies...i have only heard complaints about the crank but so far nothing about the water pullies...anyone confirm this??

i am very interested in a confirmation on this as well

the AEM is not an alternator pulley

^^ I have heard so far that it is...

the water pump and alternator "should" be okay they are not uderdriven and arent attached at the crankshaft.

the only difference I noticed in weight was the alternator pulley from ur was significantly lighter, the water pump pulley only felt a few grams lighter, and didnt seem to be worth it.

I'd rather go with aem and get the 1hp gain alternator pulley from them.

looks like the alternator to me...

https://celicahobby.com/ubbthreads/thread.f_57259_0_collapsed_2__1.html

so the AEM ones are alright? Alright i'm sorry i'm ignorant but what exactly would the benefits be? Is it worth while to buy?

ok this one is for dan if you want a reply heres one fuck off i have a job and a life other than sitting on the net and if you dont believe me come to texs i have a 2zz cracked block and i dont rag my shit but they were on almost two days so now i'm stuck putting my new motor back in saturday

lmao my fault, i forgot and just read what it said inside my AEM box
"this kit does not include a power steering pulley. kit includes alternator pulley and belt only."

i wasn't thinking.

If your still under the warranty put ur stock back on call the dealership

good idea, so weve all learned that aem alt pulley and ur racing water pulleys are safe and beneficial in a small way and any crank pulley will kill the motor...

Hey buddy. No need for the hostility. I was just saying that you are not a reputable source. Its no offense, just the facts. I'm sorry that you got this upset about it, I know having car troubles can affect an attitude on someone.

when people say underdriven, what exactly does that mean? the instructions that came with the unorthodox set called for the exact same belt as the oem one. and that's wrong, the unorthodox crank pulley is smaller, therefore i would assume that you would NEED to put on a smaller belt right? could it be that the damage is result of the wrong sized belt? hearing this is scary...i've had a set of those pulleys for awhile now. nothing cracked yet...although i must say i do feel a difference in power with those pulleys.

i guess a crank pulley being smaller should be sufficient. maybe they should not have been made out of billet..

This article is talking about a BMW; they take a look at
Each of the pulley-driven components under it's hood and the
effects of underdriving them:

http://www.uucmotorwerks.com/udp/udp_info/E36description.htm

I have the crank pulley and it's too freaking awesome.. As far as i know, there is no Gt owner with taht pulley who had those trouble... Mabye there is only trouble with the GTS?

My friends oil pumped failed and blew his engine due to this UR pulley...be very aware man! dont want another celica on the side of the street

JUST A THOUGHT:

Sticky anyone?

I vote YES!

I thought it was already known that the UR pulley doesn't do the 2ZZ any good and can be harmful.

apparently people are still buying them and blowing their engines. something has to be done.

From one of the best BMW tuners in the world.
http://dinancars.com/whitepapersFile.asp?ID=5

^^ awesome link

sticky vote

i've had mine on my gt for almost a year now with no problems, only thing was i needed a new battery, but mine was going out the window anyways. i'm not sure but i think my heat may not be working at low rpms because of it, haven't thought about that connection though.

^^ which one?