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Old 04-19-2022, 12:13 PM   #1
ltwargssf
 
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Lightweight crank pulleys?

Looking to maybe put some lightweight pulley on my Yaris but I'm a bit hesitant about reliability since I drive this car over 40k a year.

There doesn't seem to be many options for the 1nz, so far my options are a vividracing or AROSPEED on ebay.

https://www.vividracing.com/nonstopt...151673703.html


Has anyone had experience with these parts and the quality? I'm also worried about the stock pulley being a harmonic balancer and potentially putting wear on the crankshaft if I remove that balancer. If so, I am debating if this is more of a "race car" mod rather than long-term reliability.
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Old 04-19-2022, 02:10 PM   #2
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In my experience it didn't do much, better invest in lightweight flywheel
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Old 04-20-2022, 12:34 AM   #3
mitch9521
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I have the NST crank pulley on my car, its definitely more responsive and heel-toe downshifting is a breeze.

The downside is that there is less rotating inertia so you have to slip the clutch a bit more to get going smoothly, not a big deal if you're a competent manual driver.
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Old 04-21-2022, 09:37 PM   #4
remcafee
 
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i would recommend not doing light weight crank pulleys, they dont have any harmonic dampening, so you will ruin your crankshaft bearings prematurely
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Old 04-21-2022, 10:41 PM   #5
mitch9521
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Quote:
Originally Posted by remcafee View Post
i would recommend not doing light weight crank pulleys, they dont have any harmonic dampening, so you will ruin your crankshaft bearings prematurely
1NZ-FEs aren't internally balanced?
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Old 05-25-2022, 07:21 AM   #6
Ronnie V
 
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There is no harmonic balancing on the Echo, the engine must be internally balanced.
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Old 05-25-2022, 07:53 PM   #7
mitch9521
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Quote:
Originally Posted by Ronnie V View Post
There is no harmonic balancing on the Echo, the engine must be internally balanced.
Yari' use the same crank pulley as the Echo despite them only using one accessory belt.
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Old 02-25-2023, 12:35 PM   #8
SirDigby
 
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NST crank works okay for N/A. they will break under pressure. (+5 years)
NST water pump pully DOES NOT work. the belt eats through the thin aluminum (6months)
NST alt pully works fine. you save 2g or whatever. not worth paying for IMO.
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Old 02-25-2023, 07:43 PM   #9
Compeer
 
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Quote:
Originally Posted by ltwargssf View Post
Looking to maybe put some lightweight pulley on my Yaris but I'm a bit hesitant about reliability since I drive this car over 40k a year.

There doesn't seem to be many options for the 1nz, so far my options are a vividracing or AROSPEED on ebay.

https://www.vividracing.com/nonstopt...151673703.html


Has anyone had experience with these parts and the quality? I'm also worried about the stock pulley being a harmonic balancer and potentially putting wear on the crankshaft if I remove that balancer. If so, I am debating if this is more of a "race car" mod rather than long-term reliability.
There is also https://www.worksengineering.co/prod...oyota-vios-1-5
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