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Old 04-29-2013, 12:20 AM   #1
NaviLupets
 
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does the new lighter weight pulley do damage because it absorbs less vibration?
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Old 04-29-2013, 03:50 PM   #2
Golddeenoh
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Quote:
Originally Posted by NaviLupets View Post
does the new lighter weight pulley do damage because it absorbs less vibration?
no, 4 cylinder engines are balanced vertically and don't have the need for a harmonic balancer like many "V" type engines. it wont hurt your engine unless you install it incorrectly.
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Old 04-30-2013, 09:30 PM   #3
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how long have u had your pulley installed for? cuz i have been reading a bunch of articles and it says that it will damage your engine. trust i would love to buy that part and install it but I'm looking for more evidence that it wont.
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Old 04-30-2013, 11:36 PM   #4
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Originally Posted by NaviLupets View Post
how long have u had your pulley installed for? cuz i have been reading a bunch of articles and it says that it will damage your engine. trust i would love to buy that part and install it but I'm looking for more evidence that it wont.
9 months, no problems whatsoever. Only issues I've heard about it is getting the belt at the right tension after installing it (happened to me, too). Not a biggie, the belt squeaks a little and you tighten it up!

NST made a similar version of this pulley back in the day, people have run them for tens of thousands of miles without any issues. The MI one is a bit better from a build point of view, so you should be good to go for the life of your Yaris.

Edit: What tk-421 said!
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Last edited by jpmck03; 05-02-2013 at 12:02 AM. Reason: Clarification
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Old 05-01-2013, 12:39 AM   #5
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90k miles, improved engine response, less gear hunting in the automatic when climbing hills, improved MPG and ZERO issues. I'm using the nst version and can say without a doubt a very worthwhile and noticeable modification. Laws of physics apply here, less rotational mass!
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