So I bought the ZPIRacing Lightweight Crank pulley for the Scion tC and decided what-the-hell, the blocks are the same, so the pulleys should be too, and I don't see why it shouldn't fit on the 2AZ-FE Camrys. So as long as I was messing with pulleys, I decided to get a new serpentine belt at the same time since I've got about 80K on the car, and its on the original belt.
So they came, and I got to work. Its kind of a pain in the ass to do it, and its nearly impossible without someone to help you... but if you're handy, then its not too much trouble.
Start by jacking up the front right of the car, and take off the passenger side wheel, and the splash guard inside the wheel well to expose the crank pulley.
The first thing you need to do from here is remove the serpentine belt. I won't get into how to do that... if you must know, just buy a Haynes Manual and follow the instructions.
After that, you need two M8 bolts and you thread them through the two holes in the stock crank pulley so that it keep the pulley from spinning while you unbolt it.
After you do that, you need to take a 19mm socket and a breaker bar or an impact gun if you have access to one, and remove the center bolt from the pulley. Then just pull it off.
This is the old pulley next to the new one. The old one is something like 10 pounds! This new one is about 2 pounds. That 80% less stress on the crankshaft!
Anyway, getting the new one on is trickier than getting the old one off, since the new pulley doesn't have bolt holes like the old one does. When you put the new pulley on, make sure to line up the little "blip" in the center with the one in the crankshaft. Then make sure its good and snug. When I put the center bolt back on, I had someone use a screw driver to keep the pulley in place while I used a torque wrench to tighten to 120 ft-lb. The screwdriver got kinda stuck behind the pulley, but thats ok because all you have to do is turn the pulley the other direction and it'll come loose. This won't loosen the center bolt because it'll just turn the pulley as a whole.
Then, just install the serpentine belt back on, and you're good to go!
You can feel the power increase almost immediately. This has been dyno proven by one of the tC guys where he got 12hp and 18 tq from this install.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
Last edited by white3ch0c0late; 02-09-2007 at 03:18 PM.
you've got me interested... damn you! making me spend more money so i've been looking into this... and i'm wondering why you didn't go for the NST pulley kit? it looks like their crank pully has the same bolt holes as OEM, so it would be easier to install... plus i think its cheaper. their respective websites show the ZPI at $145, and the NST at $110. i'm sure there are cheaper places, but yeah. or maybe the NST is smaller than OEM... hmm.
anyway, do you think its a worthwhile investment? i could use a little power increase
__________________
2005 Camry "LE"
TL HID Retrofit | OEM Fogs | SE Bumper | SE Grill | Factory Spoiler | Kosei K1 TS 18x7.5 | BC Racing Coilovers
TRD [RSB | Strut Tower Brace | Exhaust] || Rear Drum to Disc Swap
you've got me interested... damn you! making me spend more money so i've been looking into this... and i'm wondering why you didn't go for the NST pulley kit? it looks like their crank pully has the same bolt holes as OEM, so it would be easier to install... plus i think its cheaper. their respective websites show the ZPI at $145, and the NST at $110. i'm sure there are cheaper places, but yeah. or maybe the NST is smaller than OEM... hmm.
anyway, do you think its a worthwhile investment? i could use a little power increase
I didn't go for the NST pulleys because those pulleys are underdrive pulleys, which means that they are smaller than the stock one in diameter... if I had gotten those, I would've had to figure out which length belt I would need, what with the pulley being smaller and needing a shorter belt. On top of that, from what I've heard, for underdrive pulleys to obtain the same kinds of gains that pulleys like mine have, things like the a/c become weaker (although I have no concrete evidence to back this up).
As far as worthwhile investment... I'll let you know soon enough. I didn't get to drive around that much today, but I took a couple of short, spirited drives, and I can definitely feel a difference. Acceleration is definitely increased, mainly because it seems that now, the RPM needle moves up much faster.
EDIT: After researching... if you get an underdrive pulley, it will run all of the other pulleys much slower. In turn, the alternator will have a lower voltage, the water pump will be slower, and the a/c will also be weaker. In colder climate, having the water pump run slower is not too good since some people have had problems with overheating. Since the ZPI pulley is the same diameter as stock, all of the other pulleys are still spinning at the same rate as stock.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
Last edited by white3ch0c0late; 02-09-2007 at 09:21 PM.
ah, i see. after looking at the full NST pulley kits though, they seem to have addressed that issue. 20% underdrive crank pulley, 20% overdrive alternator. so i guess that would cancel the effects on the a/c and alternator, though it would still affect the water pump.
what do you think of mixing the two kits? ZPI lightweight crank pulley, and the NST lightweight 20% overdrive alternator and water pump pulleys? i wonder if its safe to run the alternator 20% higher than stock...
__________________
2005 Camry "LE"
TL HID Retrofit | OEM Fogs | SE Bumper | SE Grill | Factory Spoiler | Kosei K1 TS 18x7.5 | BC Racing Coilovers
TRD [RSB | Strut Tower Brace | Exhaust] || Rear Drum to Disc Swap
Thats pretty cool! Let us know if you can feel a difference.
But have you read all the posts in the scion forums saying how this will eventually lead to the death of your engine due to torsional vibration? I would consider getting one too but it seems too risky.
How does this effect the crank balance? I'd assume that weights of the harmonic balancer are there to dampen crankshaft vibrations and keep it running true. Would having something this light make the crank wear unevenly? Perhaps throw the motor out of balance and wear the gudgeon pins more?
Looks good btw!
__________________ 1988 Toyota Camry 2VZ-FE E153
1972 Ford Mustang Sprint "F" 351C-2V 4SPD
1973 Ford Mustang Mach 1 "Q" 383C-4V FMX
Question,
- since your acceleration increased when you let go of the gas does your car decelerate increased also?
- samson
No, although I haven't paid that much attention to that, it doesn't seem like deceleration is any different.
Quote:
Originally Posted by JetSpeedCamry
How does this effect the crank balance? I'd assume that weights of the harmonic balancer are there to dampen crankshaft vibrations and keep it running true. Would having something this light make the crank wear unevenly? Perhaps throw the motor out of balance and wear the gudgeon pins more?
Looks good btw!
From what I've noticed, I've only seen positives... the engine tends to run quieter and smoother than before. I can see what you mean, but even after reading about people's cars after extended use, I haven't seen anyone with problems like those.
Quote:
Originally Posted by LE05
did you need to use a pulley removal tool to get the pulley off, or were you able to remove it by hand?
No puller necessary. Just use the M8 bolts in the bolt holes. I just used them to hold the pulley in place while I took off the center bolt... once it was off, I just grabbed it with my hands and it came right off. Same with putting the new one on. It just slid right into place. No real force necessary.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
Last edited by white3ch0c0late; 02-10-2007 at 10:02 AM.
Thats pretty cool! Let us know if you can feel a difference.
But have you read all the posts in the scion forums saying how this will eventually lead to the death of your engine due to torsional vibration? I would consider getting one too but it seems too risky.
Actually, I haven't found anything to that effect. I've looked around for it, but didn't find anything. Also, ZPI says that they wouldn't sell a product that they felt would cause premature engine failure.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
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ZPIRacing Lightweight Crank Pulley Install + Instructions
so i've been looking into this... and i'm wondering why you didn't go for the NST pulley kit? it looks like their crank pully has the same bolt holes as OEM, so it would be easier to install... plus i think its cheaper. their respective websites show the ZPI at $145, and the NST at $110. i'm sure there are cheaper places, but yeah. or maybe the NST is smaller than OEM... hmm.
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