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227 Posts
this is track proven...where are u slips
ZPI Lightweight Crank Pulley
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227 Posts
long story shot pulley doesnt work...and will kill ur engine
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703 Posts
wow what a long thread that was brought back alive....so a pulley is not a good mod for your car?
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6,530 Posts
Proven by Science it self.
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1 Posts
ok, nothing to do w/ a zpi lightweight crank pulley,
i found this however
http://atiperformanceproducts.com/links/pr...amper/index.htm
will this fit a tC and does it wield any power gains?
all help is greatly appreciated
i found this however
http://atiperformanceproducts.com/links/pr...amper/index.htm
will this fit a tC and does it wield any power gains?
all help is greatly appreciated
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7,513 Posts
No, but it is a great point to take in.
ATI, a good builder of performance parts, felt that the answer to whether a dampened pulley was needed was not only yes, but that a better damper is needed as you up the power. They will not build a non-dampened pulley.
ATI, a good builder of performance parts, felt that the answer to whether a dampened pulley was needed was not only yes, but that a better damper is needed as you up the power. They will not build a non-dampened pulley.
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35 Posts
Wow....i read this whole thing and i am very depressed (but thankful).....i just got the NST pulley and belt and was looking forward to put it on....now looks like its a no go....i guess a flywheel is the way to go....thanks for all the info!!!
2-3-4 hours later..I lost count because I was so into the thread and I don't remember what time I started reading.
all I have to say is WOW.
It's funny how it turned out:
Pulley good?
-no.
Pulley good, look dyno!
-No, look: links, experience, names, numbers, accounts, proof,
science!
Pulley good, look more dyno, + scion life members say good! No problem yet?
-No, you'll regret it.--more science, real life examples, dumbed down explanations w/ pictures.
Pulley great! DYNO! Track time! .0001?
-No.
Pulley Good! Personal attacks non relevant to thread, attacks on character.
-Ignorance. On topic please, you have on proof, you are flawed, you are ignorant.
Pulley bad! car boom :[
-Told you.
But...I was told pulley good from 20 year old mechanic with no green card.
-Haha, Pulley bad, sticky now.
I have poof pulley good!
-No you don't.
...no response
...no response
-He's gone, He ran.
pulley good?
-NO!
I can go on forever, into more detail, with pictures and links. But That's my summary.
This thread took my night, but it was very entertaining and informative. I would like to allocate those who had the patience to put up with the ignorance and constant questions after explaining it numerous times in numerous threads/posts etc.. Do all yourselves a favor and just say, "I told you so."
all I have to say is WOW.
It's funny how it turned out:
Pulley good?
-no.
Pulley good, look dyno!
-No, look: links, experience, names, numbers, accounts, proof,
science!
Pulley good, look more dyno, + scion life members say good! No problem yet?
-No, you'll regret it.--more science, real life examples, dumbed down explanations w/ pictures.
Pulley great! DYNO! Track time! .0001?
-No.
Pulley Good! Personal attacks non relevant to thread, attacks on character.
-Ignorance. On topic please, you have on proof, you are flawed, you are ignorant.
Pulley bad! car boom :[
-Told you.
But...I was told pulley good from 20 year old mechanic with no green card.
-Haha, Pulley bad, sticky now.
I have poof pulley good!
-No you don't.
...no response
...no response
-He's gone, He ran.
pulley good?
-NO!
I can go on forever, into more detail, with pictures and links. But That's my summary.
This thread took my night, but it was very entertaining and informative. I would like to allocate those who had the patience to put up with the ignorance and constant questions after explaining it numerous times in numerous threads/posts etc.. Do all yourselves a favor and just say, "I told you so."
Joined
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1 Posts
I'm going to be flat out honest, all though it took me like 3 hours to throughly read this forum, look a muliple different websites, look at a lot of bashing, listen to knowledgable people spill their heart out, so to speak, on the subject, I'm grateful they did. There is so much evidence, proof, science, etc. that they have provided to back up the fact that solid crank pulleys are a bad mod. I'm a rook and accept that, but even I see the points that all of these guys are making, and the fact that one actually tested it on track and got results to prove it didn't perform as advertised. Thanks a lot for all the great info guys.
no wait. wait. all we have is theories and opposing views of what is better. we have no factual proof that a L.W. pulley actually caused an engine (scion engine to be exact) to implode. whereas, we have analytical data from Dinan and the rest of the pro's that these pullies are bad for your car.
***UPDATED INFORMATION:
I recently had a chance to sit down with one of the engineers for the scion tc and he was telling me all the variables that were tested like you wouldn't even imagine.
10,000 miles? take that outside for a walk. 100,000 miles? take a sip of your lemonade.
so, it all came down to just like how zpi claimed 21 WHP with their head package and no one had dyno's to prove it (not even zpi), i had to question the undeniable itch of uncertainty about lightweight pulleys. when i had asked him whether if these pulleys will make the engine explode, he smiled back and said, 'if i were to tell you, i'd have to kill you.' then he proceeded to explain that it was too complicated for me to understand, that it goes beyond the realms of physics. it's more about the politics of it all. he said.
he said that, if they were to produce a car that could do 50 mpg that could do zip to 60 in 4 seconds, and still cost $16 grand, nobody would be in business because 1) everybody would buy this car and 2) everybody would kill each other from sheer insanity. so, we build cars that are moderately in the 'safe-zone' in the economic sense, with the basis that people are going to work for what they want. so, when we built the Scion TC, the protype was designed to have 330 HP, AWD, bi-turbo hybrid system we had implemented not too long ago, achieving nothing that we've never seen before. The drivetrain loss were almost minimal, down to 3%, due to a system using two light crank pulleys that were infused with each other to compensate for the harmonic imbalance. the results were astounding. because we had put two pullies instead of one, it doubled the power output from 330 HP from the crank to almost 600 HP. It was unbelievable how simple math could really add up like this. We then put Type R stickers, along with the JDM shift knobs, and it added another 45 HP to the WHEELZZZZZ~
so, if you're going to do the pulley mod, do it right. put two in and gun it like there's no tomorrow.
***UPDATED INFORMATION:
I recently had a chance to sit down with one of the engineers for the scion tc and he was telling me all the variables that were tested like you wouldn't even imagine.
10,000 miles? take that outside for a walk. 100,000 miles? take a sip of your lemonade.
so, it all came down to just like how zpi claimed 21 WHP with their head package and no one had dyno's to prove it (not even zpi), i had to question the undeniable itch of uncertainty about lightweight pulleys. when i had asked him whether if these pulleys will make the engine explode, he smiled back and said, 'if i were to tell you, i'd have to kill you.' then he proceeded to explain that it was too complicated for me to understand, that it goes beyond the realms of physics. it's more about the politics of it all. he said.
he said that, if they were to produce a car that could do 50 mpg that could do zip to 60 in 4 seconds, and still cost $16 grand, nobody would be in business because 1) everybody would buy this car and 2) everybody would kill each other from sheer insanity. so, we build cars that are moderately in the 'safe-zone' in the economic sense, with the basis that people are going to work for what they want. so, when we built the Scion TC, the protype was designed to have 330 HP, AWD, bi-turbo hybrid system we had implemented not too long ago, achieving nothing that we've never seen before. The drivetrain loss were almost minimal, down to 3%, due to a system using two light crank pulleys that were infused with each other to compensate for the harmonic imbalance. the results were astounding. because we had put two pullies instead of one, it doubled the power output from 330 HP from the crank to almost 600 HP. It was unbelievable how simple math could really add up like this. We then put Type R stickers, along with the JDM shift knobs, and it added another 45 HP to the WHEELZZZZZ~
so, if you're going to do the pulley mod, do it right. put two in and gun it like there's no tomorrow.
QUOTE (lo bux racer @ Oct 9 2005, 05:54 PM) index.php?act=findpost&pid=98832
'ok so i know i run the risk of sounding like a complete fool but...is there any way to get a more durable oil pump and cam chain and also is there any way to convert over to belt driven?
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