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Old 02-21-2017, 01:20 PM   #1
mrmikeyp
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Default Rotational noise from timing belt area. Gates Kit (video)


02 wrx, 180k miles.

Just did the timing belt kit through Gates about 3 months ago, did not have this noise previously. Fairly certain its timing related as i took off the drivers side timing cover and the noise got much louder. Pretty sure you can hear it in that video i posted.

So my questions are:

-Could this be anything OTHER than timing belt/idler related? hate to start that job only to find out the noise isn't in there.

-My faith in Gates' kits are gone. What are some other options for timing belt/idler kits that aren't $800 like OEM. If I do have to redo the job, I'd prefer to just get all Gates stuff out of there.

Thanks for looking
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Old 02-21-2017, 03:25 PM   #2
oaklandish_WRX
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The periodic "scratching" sound, ~1/second?
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Old 02-21-2017, 03:37 PM   #3
mrmikeyp
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Originally Posted by oaklandish_WRX View Post
The periodic "scratching" sound, ~1/second?
yepper.

My first thought was guide, but i'm not seeing any marks on the timing belt that would show a belt guide gouging into the t-belt.
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Old 02-21-2017, 07:38 PM   #4
Valarius Starchaser
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its not on par with the speed of the crank way to slow something else rubbing likely
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Old 02-21-2017, 10:23 PM   #5
mrmikeyp
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Originally Posted by Valarius Starchaser View Post
its not on par with the speed of the crank way to slow something else rubbing likely
Gotta disagree with you. Took another video, watch for when the writing on the timing belt passes the camera. Syncs up with the noise, so i'm still thinking timing related.

Also took off my acc belts to see if maybe (hopefully) my noise was coming from one of them, nope. Same noise, same area.

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Old 02-21-2017, 11:59 PM   #6
Charlie-III
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Check the belt itself, everything else has done multiple revolutions for one full cycle of the belt.
Could be a bad edge, bad tooth, etc. It's the belt, not the crank gear, water pump, tensioner, guide pullies, etc.

Check it out and see if you prove me incorrect.
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Old 02-22-2017, 12:01 AM   #7
mrmikeyp
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Quote:
Originally Posted by Charlie-III View Post
Check the belt itself, everything else has done multiple revolutions for one full cycle of the belt.
Could be a bad edge, bad tooth, etc. It's the belt, not the crank gear, water pump, tensioner, guide pullies, etc.

Check it out and see if you prove me incorrect.
makes sense to me

Should I just go OEM for the new belt?

I'll probably just replace my tensioner with something non-gates too while i'm in there. Any recommended brands?
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Old 02-22-2017, 12:16 AM   #8
Charlie-III
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I usually get Gates kits, but sounds like maybe they have changed supplier for guides/bearings. Belts should still be fine.
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Old 02-22-2017, 12:19 AM   #9
mrmikeyp
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Quote:
Originally Posted by Charlie-III View Post
I usually get Gates kits, but sounds like maybe they have changed supplier for guides/bearings. Belts should still be fine.
welp, this one wasn't...3 months and then this.
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Old 02-26-2017, 12:45 AM   #10
mrmikeyp
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FIxed the issue it seems.

Changed the timing belt with a mitsoboshi, and noticed that all idlers and the tensioner were made in japan! Except for the geared idler, which was made in china. Replaced that.

Noise is gone. Pretty sure it was the timing belt.

Thanks for the help
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Old 02-26-2017, 12:57 AM   #11
oaklandish_WRX
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nice...glad it was not too bad.

How did you lock the drivers side cams in position, if I may ask?
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Old 02-26-2017, 12:58 AM   #12
mrmikeyp
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Originally Posted by oaklandish_WRX View Post
nice...glad it was not too bad.

How did you lock the drivers side cams in position, if I may ask?
LIGHTLY clamped them together with a vice grip.

And by light i mean LIGHT
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Old 09-05-2017, 02:58 AM   #13
mrmikeyp
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Back from the dead

Noise came back a bit ago but i had other things to deal with. Same noise, same part of the car

Wondering what else it could be...ruled out everything timing related basically
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