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  #46  
Old 02-11-2012, 07:58 AM
SVXMAN2001 SVXMAN2001 is offline
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Re: Too much timing belt travel...

Michael, I am going off the factory service manual and the picture shows the flanged tube towards the back of the tensioner so I am fairly certain that is the correct way...we will see.

This is a pic of what I am dealing with. I misspoke earlier and thought it was simply a washer on the back, it clearly is a metal flanged tube that goes through the tensioner. I was thinking again that perhaps a washer on the bolt side would be a solution? As opposed to adding a washer to the back of the flanged tube.
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  #47  
Old 02-11-2012, 07:59 AM
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Re: Too much timing belt travel...

Quote:
Originally Posted by SVXMAN2001 View Post
Michael, I am going off the factory service manual and the picture shows the flanged tube towards the back of the tensioner so I am fairly certain that is the correct way...we will see.

This is a pic of what I am dealing with. I misspoke earlier and thought it was simply a washer on the back, it clearly is a metal flanged tube that goes through the tensioner. I was thinking again that perhaps a washer on the bolt side would be a solution? As opposed to adding a washer to the back of the flanged tube.
What is the chance that the BOLT is too long?
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  #48  
Old 02-11-2012, 08:11 AM
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Re: Too much timing belt travel...

Unlikely. I've tried both the new and old bolt, same result
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  #49  
Old 02-11-2012, 10:25 AM
SVXMAN2001 SVXMAN2001 is offline
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Re: Too much timing belt travel...

Well that idea (washer and bolt combo) was a fail. I noticed that the metal flange that goes into the tensioner protrudes slightly preventing the head bolt to firmly secure against the pulley. I will NOW try another washer that will fit the larger diameter metal flange. I'll put the washer on the side that mates against the pulley.
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  #50  
Old 02-11-2012, 03:19 PM
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Re: Too much timing belt travel...

Is it just me or is the head of your tensioner bolt unusually small in diameter?
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  #51  
Old 02-11-2012, 03:39 PM
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Re: Too much timing belt travel...

The new bolt is the same size as the old bolt, so it may just be the angle I took at the picture at.

I tried putting a washer on the back of the tensioner without any good results. By putting that washer there I eliminated the gap however the bolt pressed tightly against the tensioner itself which "locked" it into place. The tensioner must be able to swing freely so as the timing belt wears over time, the hydraulic tensioner's piston extends and presses against the tensioner creating sufficient tension throughout the timing belt's useful life. Clearly eliminating that gap and locking the tensioner into a fixed position will create severe problems down the road.

My last resort is to purchase an OEM tensioner. If I still then have the same issue, I'll just have to live with it.
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  #52  
Old 02-11-2012, 04:52 PM
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Re: Too much timing belt travel...

Quote:
Originally Posted by oab_au View Post
In that second video, you can see and hear a rhythmic action that would be caused by one of the pulleys running out, as Tom has described.

Harvey.
Again...
Nothing else is going to scrape on those covers if the cam sprockets are installed properly. You should be able to see what you did wrong if you would simply take off the cam sprockets and take a look. I would pay close attention to the condition of where the slot for the key is. A tensioner does not wear-out while the engine is just sitting there while you install components. Again... People can do things to cars that cars can't do to themselves... Bad things.

Keith
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  #53  
Old 02-11-2012, 05:01 PM
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Re: Too much timing belt travel...

Unless, you're dealing with a defective part from the start. Keith, appreciate all your input. But if you read through the thread I've isolated the issue to the tensioner.
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  #54  
Old 02-11-2012, 05:12 PM
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Re: Too much timing belt travel...

Quote:
Originally Posted by SVXMAN2001 View Post
Unless, you're dealing with a defective part from the start. Keith, appreciate all your input. But if you read through the thread I've isolated the issue to the tensioner.
I have been reading through it quite a bit today and listening to the video a few times as well. I have been wondering if the scraping has made enough of a mark on the cover to give you a better clue!

...I'm pulling for you man!!

I wish I was close enough so I could swing by and maybe look at it with you.

Keith
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  #55  
Old 02-11-2012, 05:18 PM
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Re: Too much timing belt travel...

I inspected the back timing covers there was barley a mark on the right side (passenger) side. Very slight rub mark. However I reseated the plastic cover and now there is clearly space between both sprockets (driver's side was never an issue).

It certainly would be nice to have a fellow svx enthusiast nearby, but we're doing the best we can. Im really hoping the OEM part resolves this. I can't imagine the tensioner was intended to move that much.
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  #56  
Old 02-14-2012, 08:29 AM
SVXMAN2001 SVXMAN2001 is offline
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Re: Too much timing belt travel...

Well back to the drawing board, sort of. The OEM tensioner from the dealer mirrored the same movement as the tensioner I have. So that isn't the issue.

Spoke to a mechanic (there was only one their that was familiar with the svx) at the dealer and showed him the video's i had taken. He thinks that the belt is slightly narrower than an OEM belt. There shouldn't be as much of a gap on the sprockets as shown on the video's.

Does anyone know the thickness of the OEM belt (measuring the part that lays across the sprocket)? Ok for future reference the width is 1.34 in.

Last edited by SVXMAN2001; 02-14-2012 at 08:32 AM.
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  #57  
Old 02-14-2012, 08:55 AM
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Re: Too much timing belt travel...

I just checked a Gates belt and also got 1.34".
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  #58  
Old 02-14-2012, 11:53 AM
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Re: Too much timing belt travel...

Is there something in the hole that is not allowing the bolt to thread in as far as it should. Are you 100% sure that you are using the correct bolt.

I don't have one that I can get to or I would measure the shaft length for you.
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  #59  
Old 02-14-2012, 01:30 PM
SVXMAN2001 SVXMAN2001 is offline
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Re: Too much timing belt travel...

Yeah, nothing's blocking the bolt and I am 100% certain that it's the right bolt. I've ruled out the tensioner now.

Last thing is to check the width of my timing belt. For anyone that's installed T-Belts, is there as much a gap on the sprockets as in my video's?
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  #60  
Old 02-14-2012, 03:44 PM
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Re: Too much timing belt travel...

I don't care if the belt is 1/4" wide or 4" wide, that will not cause the tensioner pulley to move like that.
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