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03-03-2007, 08:26 AM | #1 |
Drives: Toyota Yaris T SPORT Join Date: Feb 2006
Location: Budapest, Hungary
Posts: 110
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Crank pulley's for Yaris?
I read this on another forum about crank pulley's, could it be true for our Yaris?
"be aware that fiting an undampend pulley in place of a dampend one can cause nasty harmoinc vibrations that can break the crank.now it may well be fine but unless i was having the whole bottom end dynamic balanced i wouldnt risk it. toyota put a dampened pulley on there for a reason."
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03-03-2007, 08:51 AM | #2 |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
Posts: 1,059
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People debate this all the time. Some say don't install one while others say it won't hurt anything. If you search you'll find info on this.
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03-03-2007, 09:55 AM | #3 | |
Drives: Toyota Yaris T SPORT Join Date: Feb 2006
Location: Budapest, Hungary
Posts: 110
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Quote:
What can it actually hurt? Can it break as mentioned? I know a lot of people have this installed on their cars, Yaris as well. I've just never heard of anything going wrong by installing this mod. Opinions and feedback?
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03-03-2007, 10:40 AM | #4 |
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Drives: LB Join Date: Jul 2006
Location: OH
Posts: 7,787
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For every person that says you'll need to balance the bottom end there is someone else with 80,000 miles on their aftermarket crank pulley.
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03-03-2007, 11:51 AM | #5 | |
Drives: Toyota Yaris T SPORT Join Date: Feb 2006
Location: Budapest, Hungary
Posts: 110
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Quote:
By the way, nice DIY write up on the pulley!
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03-03-2007, 12:00 PM | #6 | |
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Drives: LB Join Date: Jul 2006
Location: OH
Posts: 7,787
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Quote:
I am definitely satisfied. I can't vouch for how much power it makes in actuality, although I am trying to get it on a dyno so I can find out. All I can say is that throttle response was definitely improved, and I know some modest horsepower gain is there, although I don't want to speculate numbers based on the butt dyno. I'm excited to follow it with the rest of the lightened pulleys coming this summer. For a little over a hundred bucks I don't see why everyone wouldn't have some type of lightened crank pulley on their car. Its the perfect first mod. Don't forget though... NST FTW. |
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03-03-2007, 01:26 PM | #7 |
Drives: 2005 Scion xB Join Date: Nov 2006
Location: The Black Hills of South Dakota
Posts: 1,059
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I got my Yaris because I want it to last 200,000 miles, not 80,000. If that were the case I would have bought somthing other than a Toyota. I'm not saying a non-balanced crank pully will ruin your engine, just that 80,000 miles isn't a fair test for a Toyota. 200,000+ on a pully and you have confirmation it doe's no harm.
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03-03-2007, 01:39 PM | #8 |
I made a post!
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I don't think there's a tC with 200k on it yet.. but we're working on it.
I personally don't keep cars long enough to know vouch for long term reliability, stock, modified or otherwise.. One to two years at best.. :)
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ZPIracing - World Leader In YARIS Performance, and we make some scion stuff too..... :o If you're not first, you're last! |
03-03-2007, 04:06 PM | #9 |
Drives: 2006 Yaris Join Date: Dec 2006
Location: USA
Posts: 203
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This topic was brought up in the original NST group buy thread, and Mike from NST talked about it a little bit.
http://www.yarisworld.com/forums/showthread.php?t=3239 I know so many people who use NST crank pulleys for thousands of miles and none of them have had any problems. I wouldn't ever touch crappy ebay junk, but I think a well designed high quality product should be just fine. |
03-03-2007, 05:27 PM | #10 |
The Beautification of Car
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i think it works just fine, if you worry about high mileages then just replace it every 100000 miles. :)
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03-03-2007, 05:31 PM | #11 | |
Drives: Toyota Yaris T SPORT Join Date: Feb 2006
Location: Budapest, Hungary
Posts: 110
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Quote:
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03-03-2007, 06:55 PM | #12 |
Super Moderator
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Crap.. so much more for me to buy...
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03-04-2007, 04:42 AM | #13 |
Drives: MK I Vitz 1.0l F Package Join Date: Jun 2006
Location: Paphos, Cyprus
Posts: 81
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