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Dayco Belt tensioner

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Old 09-19-2006, 07:40 AM
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it is not the tensioner it is the instant let off of the gas, the blower almost stops and causes the shock that breaks the unit. Let off easy.
Old 11-10-2007, 06:45 PM
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Originally Posted by The Breeze
Yep that's how I broke mine by back peddaling here is a pic of the dayco.



that is a gates tensioner
Old 11-11-2007, 11:10 AM
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Yeah I went to Napa with the dayco part# and wound up with the gates tensioner which im glad I did this one looks like it will last a while longer than the maggie supplied tensioner and I still run the original maggie belt with this tensioner 100mm idlers and 2.9 pulley imagine that
Old 11-11-2007, 12:09 PM
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Originally Posted by The Breeze
Yeah I went to Napa with the dayco part# and wound up with the gates tensioner which im glad I did this one looks like it will last a while longer than the maggie supplied tensioner and I still run the original maggie belt with this tensioner 100mm idlers and 2.9 pulley imagine that
the main difference between the gates and dayco tensioners is gates used a round spring vs dayco which uses a flat spring. Gates claims the round spring is superior to the flat spring setup
Old 11-11-2007, 01:45 PM
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Has anybody checked or messured the spring force of each unit to see which one has the most force to keep the belt from slipping, if not I will try to get my hands on the Gates unit and compare the two in the next 2 weeks.
Old 11-11-2007, 09:08 PM
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anyone ever thought about using a diesel truck belt tensioner? I have "heard" that they are pretty stout, just never looked into it before.
Old 11-17-2007, 09:54 PM
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Interesting, I just broke my tensioner a couple of nights ago. I might go to autozone tomarrow and see if I can pick up a dayco one or something, beats ordering one off the net and having to wait for it to get here.
Old 11-19-2007, 11:54 PM
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Maybe one of Dayco's Heavy Duty tensioners for big rigs can be adapted with a 6-rib pulley and made to work on the stock accessory bracket. These tensioners are more heavily constructed and built to keep tension on 8, 10, and 12-rib belts.

http://www.daycoproducts.com/daycowe...nerCatalog.pdf
Old 11-21-2007, 09:32 AM
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I just picked up the Gates Belt tentioner and it does seem to be a better built unit, I will take some force messurements soon as I can build a test fixture.
First observations is that the Gates unit has less total travel, that could present a problem as the belt stretches under boost and you could lose tention. I will report back with pics and numers next week.
Old 11-22-2007, 10:34 AM
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Mine's been on for just over a year and has worked flawlessly like they should.


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