Lightweight Pully

[all4degame]

What do you think about a lightweight crank pully for my car Jon? What is your opinion on if it does long term damage to the car?

[cz3ch]

What do you think about a lightweight crank pully for my car Jon? What is your opinion on if it does long term damage to the car?

I'll chime in because I'm running one and have run them for years... They do not damage your car at all, they put less stress on the crank assembly themselves and allow more power to the wheels... Think of it as shaving 100-150lbs off of your car.. you will definately feel the difference in the way it pulls/accellerates... I recommend the Perrin, personally... Our site sponsor Fujiz.com has it and everything is 5% off through scikotiics

[Anonymous]

Depends on who you talk to.......

ALot of people says it throws off the harmonic balance of the engine........others say that since our cars have an internal balancer, you are fine. I personally and about ot install one on my car so it should be good. Besides, you wont see issues for a long time anyways, and by then, just do an engine swap. ;)

[aZepolyn]

Lightweight pulley is going to be OK, less weight at the crank is less stress on the crank assembly, like jaems said.

Now .. underdrive pulley ... one that's actually smaller and lighter, that's where you might want to start asking questions. The way I see it is yea, it's lighter so its taking less effort to turn, but at the same time it's turning alot more since its a smaller pulley. To me that would create increased wear and tear.

Thought's Jon? or Jaems?

[all4degame]

I'm just worried about the wear and tear on the car over the years. I have to make this car last me all through college until I can afford a new car of my own. Has anyone ran a lightweight pully for 50k+ miles? I'm probably going to wait for a ZPI Lightweight pully.

[Anonymous]

Alot of people have but it all depends on teh engine. No one that I know of has a Scion AND has run one for that long though.......... The NST has been run on a tC for roughly 15K with no issues so far.

[FrankenScion]

I appreciate the fact that people think I know all about everything but this should be probably be in Vrooom........lol.

[mattvs]

It's not a harmonics problem as much as it is a vibration problem. Chains do not have the ability to withstand shock-loads that can happen in the innards of a car. Specifically, the oil pump chain. The tC's stock crank pulley happens to have a torsional damper on it. Removing it exposes the oil pump chain along with everything else in the engine to an increase in vibrations. There's a real lengthy post on yoursciontc.com's forums about the dampers and how every auto performance expert worth anything thinks not running one is a bad idea. The post quotes basic physics books, steve dinan of dinan engineering, and other reputable sources.

I personally don't think the 9-10 freed horsepower is worth the risk to the engine or it's components and the fact that the dealership will not honor your warranty for any kind of engine problems.

[_Keith_]

Please take my advice stay away from ZPI... just get a NST pulley that where ZPI got them from orignaly and was shaving the name off and putting theres... Hmm ya think that might of through some stuff off... ? lol

[rhythmnsmoke]

Please take my advice stay away from ZPI... just get a NST pulley that where ZPI got them from orignaly and was shaving the name off and putting theres... Hmm ya think that might of through some stuff off... ? lol




:rofl2: :rofl2: Gotta love the misinformation..

[Anonymous]

Can anyone tell me how they installed their pulley

[bignoog1]

I just put on the NST pulleys. I put the underdrive crank the lightweight water pump and the overdrive alternator pulley. I'm tellin you that you can feel the differnce major on the tC. I looked all over the net for questions about the effects of the pulley on the engine. The best place to look is scionlife.com that is where I got alot of info. Oh and for the record I got mine put on by the Toyota dealer I bought my car from :) For those that don't know I locked the motor up in my car due to hydralock so I just had them put the pulleys on when they were putting the new motor in. Any questions I can answer feel free to p.m.

[mattvs]

Wow, I can't believe the dealer did that for you. And you'd be better searching YourSciontC.com's forums for educated info on the crank pulley and the problems they're responsible for. We take the laws of physics seriously :p

[scionxbman]

ive had mine on for just over 30k and its still runnig great. :dance:

[rhythmnsmoke]

Wow, I can't believe the dealer did that for you. And you'd be better searching YourSciontC.com's forums for educated info on the crank pulley and the problems they're responsible for. We take the laws of physics seriously :p



Yeah, the message board where every member is "Anti-Pulley" because it causes so many problems, yet we got people with 60k miles on a pulley, and still running strong... :crazy:

[mattvs]

yet we got people with 60k miles on a pulley, and still running strong...

2-3 people doesn't equate to any kind of valid proof. Whereas the engineering behind the dampened pulleys has existed for decades. When the pro-pulley folks can cite a source other than the manufacturer of the pulley they bought on the consequences or lack thereof of an undampened pulley on an engine that needs one, I may read it.

As for YSTC being anti-pulley, we don't listen to manufacturer's claims. At the end of the day, they still have a product to sell. Why would they tell you it's a bad idea to buy one?

And another question the prospective pulley-buyers should be asking....is 5 or so freed horsepower worth the risk of consquences to engine internals?



For all you need to know about pulleys, read this:

http://www.yoursciontc.com/forums/index.php?showtopic=6923&hl=crank%20pulley&st=0

[rhythmnsmoke]

yet we got people with 60k miles on a pulley, and still running strong...

2-3 people doesn't equate to any kind of valid proof. Whereas the engineering behind the dampened pulleys has existed for decades. When the pro-pulley folks can cite a source other than the manufacturer of the pulley they bought on the consequences or lack thereof of an undampened pulley on an engine that needs one, I may read it.

As for YSTC being anti-pulley, we don't listen to manufacturer's claims. At the end of the day, they still have a product to sell. Why would they tell you it's a bad idea to buy one?

And another question the prospective pulley-buyers should be asking....is 5 or so freed horsepower worth the risk of consquences to engine internals?



For all you need to know about pulleys, read this:

http://www.yoursciontc.com/forums/index.php?showtopic=6923&hl=crank%20pulley&st=0



Here is a fact for you...."There Are NO Scion tC's damanged from any pulley available to us". And exactly how many miles is it going to take? If they hit 100k miles, would that satisfy you then? And just for the record ZPI lightweight crank pulley dynoed at 11.5whp and 18wtq......Not 5.

[bignoog1]

Wow, I can't believe the dealer did that for you. And you'd be better searching YourSciontC.com's forums for educated info on the crank pulley and the problems they're responsible for. We take the laws of physics seriously :p

Oh my bad I didn't know that yoursciontc.com was the deciding athority on what to do and what not to do with your car. I wish the dealer would have told me that.

"Sir before you do anything to your car please consult with YOURSCIONTC.COM"

I've never even heard of that site untill today.

[mattvs]

There Are NO Scion tC's damanged from any pulley available to us

That means...nothing. There have already been documented cases of undampened pulleys damaging/destroying engines. The physics of an engine are all the same. Chains not being able to withstand shock loads has nothing to do with an car's make or model...blah blah blah..

Whatever. I've seen your posts on SL and you obviously wouldn't mind having to rebuild/replace (or was it re-rebuild? :o ) your engine. But the average tC owner won't be able to pull that off. Some 18 year old kid snagging a pulley because he read about it in a magazine isn't going to want to drop a grand on replacing an engine. The pulley manufacturer won't buy him a new engine. So he screws himself for a couple of horsepower. Sweet, that was totally worth it.



Oh my bad I didn't know that yoursciontc.com was the deciding athority on what to do and what not to do with your car. I wish the dealer would have told me that.

"Sir before you do anything to your car please consult with YOURSCIONTC.COM"

I've never even heard of that site untill today.

Less people on YSTC than SL, but quality is always better then quantity. Just be sure to search first :p Just about every subject has been discussed over there

[bignoog1]

somebody needs a Hug

[rhythmnsmoke]

There Are NO Scion tC's damanged from any pulley available to us

That means...nothing. There have already been documented cases of undampened pulleys damaging/destroying engines. The physics of an engine are all the same. Chains not being able to withstand shock loads has nothing to do with an car's make or model...blah blah blah..

Whatever. I've seen your posts on SL and you obviously wouldn't mind having to rebuild/replace (or was it re-rebuild? :o ) your engine. But the average tC owner won't be able to pull that off. Some 18 year old kid snagging a pulley because he read about it in a magazine isn't going to want to drop a grand on replacing an engine. The pulley manufacturer won't buy him a new engine. So he screws himself for a couple of horsepower. Sweet, that was totally worth it.



Oh my bad I didn't know that yoursciontc.com was the deciding athority on what to do and what not to do with your car. I wish the dealer would have told me that.

"Sir before you do anything to your car please consult with YOURSCIONTC.COM"

I've never even heard of that site untill today.

Less people on YSTC than SL, but quality is always better then quantity. Just be sure to search first :p Just about every subject has been discussed over there



So, at what mileage would you be satisfied to see on a pulley before the "Yoursciontc.com" guys get off their high horse of being "Anti-pulley"? 100k, 120k....I don't know to many people these days (statistically speaking) that would keep their cars past 120k miles before trading them in on the next best thing. We are already at 60k. So far you guys' theories aren't looking so good. :blink1:

[bignoog1]

what he said

[mattvs]

So, at what mileage would you be satisfied to see on a pulley before the "Yoursciontc.com" guys get off their high horse of being "Anti-pulley"? 100k, 120k....I don't know to many people these days (statistically speaking) that would keep their cars past 120k miles before trading them in on the next best thing. We are already at 60k. So far you guys' theories aren't looking so good.

blah blah blah, it doesn't even matter what I say. Play ostrich all you want. The physics are there, the engineering is there, the experience is there, ignore it at your risk.

[rhythmnsmoke]

So, at what mileage would you be satisfied to see on a pulley before the "Yoursciontc.com" guys get off their high horse of being "Anti-pulley"? 100k, 120k....I don't know to many people these days (statistically speaking) that would keep their cars past 120k miles before trading them in on the next best thing. We are already at 60k. So far you guys' theories aren't looking so good.

blah blah blah, it doesn't even matter what I say. Play ostrich all you want. The physics are there, the engineering is there, the experience is there, ignore it at your risk.



:crazy: You could have just answered my question. And going by experience = "NO tC has had troubles resulting from changing out the Pulley". :pilot:

[slimsdizz]

there are alot of myths about the pullies go to unorthodox racings website and look in the fact section it will adress all your concerns from a-z the stock Xa and XB pullies have a layer of rubber in them it's to reduce noise. The rubber serves no other purpose except to reduce noise there are echo's running lightened pullies and underdriven pullies with well over 200 thousand on the cars with no problems. Also the Zpi pulley is just a rebadged perrin. Why pay more the perrin also weighs exactly a quarter of a pound heavier then the agency power pulley. the agency power pulley weighs exactly one pound. The install on an Xa is very tough with limited room as the main barrier. The pullies make the most significant diffrence on the automatics for some unknown reason. If I had a manual I would go with the perrin even though it is heavier that extra eight will help a bit more with downshifting. please go read the unorthodox racing fact section they have been doing the pullies just about the longest amount of time with no scion engine failures. This will set your mind at ease and explain all of your questions. I am new here but I see this question on every forum and on every forum the unorthodox racing FAQ section has ended all disputes. Agency power is the lightest non underdriven I recieved mine for 95 dollars shipped. Then comes perrin in second lightest at stock size. then comes in the ZPI which is a rebadged perrin with the same weight at a higher price. then you get into the underdriven pullies I have heard good and bad things about NST and only good things about unorthodox except their prices. I would decide between the perrin and the agency power. hope this helps.

[rhythmnsmoke]

Also the Zpi pulley is just a rebadged perrin. Why pay more the perrin also weighs exactly a quarter of a pound heavier then the agency power pulley. the agency power pulley weighs exactly one pound.


And exactly where did you get that information? Can you show me a pic of the Perrin pulley? This is what a ZPI pulley looks like:

http://www.zeropointindustries.net/store/images/crankpulleyv2.jpg



Agency power is the lightest non underdriven I recieved mine for 95 dollars shipped. Then comes perrin in second lightest at stock size. then comes in the ZPI which is a rebadged perrin with the same weight at a higher price. then you get into the underdriven pullies I have heard good and bad things about NST and only good things about unorthodox except their prices. I would decide between the perrin and the agency power. hope this helps.


If Agency Power pulley is the lightest, then it should produce the most HP right? Check this one out....

Agency Power vs. ZPI Racing Pulley http://clubstlscion.com/forum/forum_posts.asp?TID=2835&PN=1&TPN=3


PS....I'm sure that you purchased ALL 3 pulleys and PERSONALLY weighed them yourself right?

[FrankenScion]

Whats the price difference between ZPI and Agency Power? Just curious if its worth the .13 gain in hp....lol.

And I am going to be getting a puley soon so this is great info for me at least.

[rhythmnsmoke]

Whats the price difference between ZPI and Agency Power? Just curious if its worth the .13 gain in hp....lol.

And I am going to be getting a puley soon so this is great info for me at least.



The question should not be what is the price difference, it should be what is the "Quality" difference. And there have been quite a few cases of AP pulley problems when ZPI "USE" to have the AP pulley.

[aZepolyn]

Here's your pulley options Jon, ZPI and Agency don't make xA/xB pulleys.

NST:
http://www.nonstoptuning.com/pKitToySciXAXB.htm

Unorthodox:
http://www.unorthodoxracing.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=UR&Category_Code=xbultraS

Perrin:
http://www.perrinperformance.com/products/scion_xb/crank_pulley.htm

On the other hand ...
ZPI, Agency, Unorthodox, NST make Underdrive and/or lightweight pulleys for s/c and n/a applications on the tC. Perrin doesn't though. They only just recently released a short shifter for the tC .... which if I may get some time because it's adjustable.
:up:

[rhythmnsmoke]

Here's your pulley options Jon, ZPI and Agency don't make xA/xB pulleys.

NST:
http://www.nonstoptuning.com/pKitToySciXAXB.htm

Unorthodox:
http://www.unorthodoxracing.com/Merchant2/merchant.mvc?Screen=CTGY&Store_Code=UR&Category_Code=xbultraS

Perrin:
http://www.perrinperformance.com/products/scion_xb/crank_pulley.htm

On the other hand ...
ZPI, Agency, Unorthodox, NST make Underdrive and/or lightweight pulleys for s/c and n/a applications on the tC. Perrin doesn't though. They only just recently released a short shifter for the tC .... which if I may get some time because it's adjustable.
:up:




Slight correction, ZPI does sell xA/xB pulleys. If it's not listed on the Website, I don't know why. But they do offer an xA/xB pulley.

[aZepolyn]

not being negative ... but trends force me to ask this ...


Do they have the xA/xB pulley's in stock?
and/or ... what's the wait to have them shipped out the door?



Maybe since you're the "ZPI guy" you can get some info for our members? :bow:

[rhythmnsmoke]

not being negative ... but trends force me to ask this ...


Do they have the xA/xB pulley's in stock?
and/or ... what's the wait to have them shipped out the door?



Maybe since you're the "ZPI guy" you can get some info for our members? :bow:


Keisha is checking on it as we speak....

[rhythmnsmoke]

Well, looks like my friend Walter (xA) will be the only xA I know of with a pulley for now. xA/xB pulleys are out of stock, sucks for you xA/xB guys. HOWEVER....

This is better for the xA/xB guys anyway...

Check this one out:

http://www.zeropointindustries.net/gallery/albums/videos/billysxB.wmv

[FrankenScion]

I already saw that, it looks cool. When are the turbos going to be shipping?

[rhythmnsmoke]

I already saw that, it looks cool. When are the turbos going to be shipping?


I believe they already are.


PS....I'm going to go get the 1/4 mile time on vid today. Keisha said they are going to Beech Bend. Let's see what the fastest xB puts down in the 1/4. I won't forget to make a thread for you guys l8tr.

[FrankenScion]

I'm not interested int he autos....lol. I just want to see the manuals. ;)

[rhythmnsmoke]

I'm not interested int he autos....lol. I just want to see the manuals. ;)



Yeah I know, Billy's is unfortunately an Auto.. :hiding: