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Old 02-06-2013, 08:34 PM   #1
Juice66
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s200sx/93oct

Default Gates timing tensioner no good??

Ive been hearing that the gates timing belt tensioners are failing. Is this on a few accounts or many? Starting a build and dont want the gates timing kit if the tensioners are s.h.i.t
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Old 02-06-2013, 09:33 PM   #2
Turn in Concepts
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We've had it happen 3 times, BUT we also do at least one timing job a week, and have been doing so for about 5 years now.

With that said statistically that's not too bad, UNLESS it happens to you.
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Old 02-06-2013, 09:40 PM   #3
Juice66
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Quote:
Originally Posted by Turn in Concepts View Post
We've had it happen 3 times, BUT we also do at least one timing job a week, and have been doing so for about 5 years now.

With that said statistically that's not too bad, UNLESS it happens to you.
So would you recommend the gates kit or not? In a nutshell.
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Old 02-06-2013, 09:47 PM   #4
cosseywrx
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Im about 5k in mine no problems
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Old 02-10-2013, 01:06 AM   #5
Paul
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Quote:
Originally Posted by Turn in Concepts View Post
We've had it happen 3 times, BUT we also do at least one timing job a week, and have been doing so for about 5 years now.

With that said statistically that's not too bad, UNLESS it happens to you.
how many belt jobs do you do with a Subaru tensioner? How many of them failed?


Ive also "heard" the same about the gates tensioner and they arnt that much cheaper...
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Old 02-10-2013, 01:37 AM   #6
flstffxe
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There were two members on SF.org who had tensioner bolt failures some months after timing belt services. One tensioner was from a Gates kit and the other was purchased from Jackie at Annapolis Subaru. http://www.subaruforester.org/vbulle...others-125392/

In a email exchange with Gates it was confirmed the tensioner and idlers are from the same manufacture as the factory original Subaru parts. The belt is of course Gates and the water pump can be various manufactures.

The fact that the bolt failures occurred after some months would tend to rule out Hydrogen embrittlement and point that these were more likely installation failures. Bolts being over torqued or debris under the mating surface of the tensioner mounting bracket and tensioner thus skewing the load on the bolt.

Hydraulic tensioners should be stored upright prior to installation to prevent aeration of the fluid behind the piston, which can decrease the dampening affect of the tensioner and cause the belt to jump.

https://www.gates.com/europe/file_sa...Tensioners.pdf
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Old 02-10-2013, 02:17 AM   #7
aboothman
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Agreed on all points. I have compared OEM and Gates tensioners in the past and the are identical.
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Old 02-10-2013, 11:07 AM   #8
freezingcoffee
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Quote:
Originally Posted by aboothman View Post
Agreed on all points. I have compared OEM and Gates tensioners in the past and the are identical.
I just replaced my Gates tensioner with an OEM unit. The Part number on the Gates bearing (who is made by koyo) is identical with the part number the OEM unit. Also The gates tensioner has NTN 03 engraved on the unit, while the OEM unit has NTN 04 engraved on it. I'm assuming the tensioner itself is made by NTN.
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