Cam Belt Tensioner Stud

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GTXGTXGTX
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Cam Belt Tensioner Stud

Post by GTXGTXGTX » Mon Sep 27, 2021 7:25 pm

Hi,

I am changing the cam belt on my GTX at the weekend. There seems to be varying opinions on the need to change the tensioner stud or not.
Any advice would be appreciated. Thanks



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Re: Cam Belt Tensioner Stud

Post by mark1gls » Tue Sep 28, 2021 9:08 pm

I’ve only changed mine once on my Mk1 Scirocco and never changed it on my 1988 Mk1 Golf (daily drive)
I have read online about the odd one breaking, could be from an engine/car sat around un used in a damp garage for years…
I do have a good look at the stud when changing the cam belt tensioner.

I guess it’s up to you if you are worried as I don’t want to say leave it and it snaps a year down the line…


Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
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Re: Cam Belt Tensioner Stud

Post by mark1gls » Tue Sep 28, 2021 9:09 pm

I guess you are changing the tensioner when doing the cam belt?


Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
Mk1 88 Golf GTi cabriolet 1.8 DX. Daily drive.
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Re: Cam Belt Tensioner Stud

Post by GTXGTXGTX » Thu Sep 30, 2021 8:53 pm

Yes changing the tensioner. A stud did not come with the new belt and tensioner.



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Re: Cam Belt Tensioner Stud

Post by GTXGTXGTX » Sun Oct 17, 2021 6:32 pm

GTXGTXGTX wrote:Yes changing the tensioner. A stud did not come with the new belt and tensioner.
Cam belt changed and car running well. Only problem is the tensioner is whining. To get it to stop making a noise I have to adjust it to so it is looser than recommended/ safe. Whines when at correct tightness.

Couldn't be a defective tensioner? The make is Febi.

Any Advice appreciated.


Thanks.

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Re: Cam Belt Tensioner Stud

Post by mark1gls » Sun Oct 17, 2021 9:03 pm

Does it sound like you have a supercharger fitted which changed noise with the engine revs?

Tension should be 1/4 twist with holding the edges of the belt with a finger and thumb 1/2 down the longer run of the belt.


Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
Mk1 88 Golf GTi cabriolet 1.8 DX. Daily drive.
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Re: Cam Belt Tensioner Stud

Post by GTXGTXGTX » Sun Oct 17, 2021 10:26 pm

Hi

Yes that is the soundnit makes. I will check again. I went by the Haynes manual.

Will recheck.

Thanks

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Re: Cam Belt Tensioner Stud

Post by C 20 CCO » Sat Nov 06, 2021 2:16 pm

Any further news on your tensioner??

I changed my belt and tensioner this summer, the kit came with a stud. Now the new stud wouldn’t screw into the block cleanly, so I reused the old stud.
The thread on the stud can stretch under tension hence the need for using a new one. Depending on how soft the metal is or the quality of the metal. I’ll change my stud next time around.


kind regards,

Dave.

To be old and wise......
You must first be young and stupid!

Previously owned: 1984 1.6 CL in alpine white; 1986 1.6 GT in met light blue over black body kit; 1990 1.8 GT2 in silver.
Currently: 1991 GT2 in Pearl green metallic.

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Re: Cam Belt Tensioner Stud

Post by james butler » Sun Nov 07, 2021 5:10 pm

always change the nut and tensioner
the failure of the stud, nut and/or tensioner can lead to engine failure it aint worth it
as for setting tension i set it so you can twist the belt 90 degrees and you can feel a little play in the belt forward and back about 5mm


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Re: Cam Belt Tensioner Stud

Post by GTXGTXGTX » Sun Nov 07, 2021 6:43 pm

Hi

I changed the nut and tensioner the problem is when the belt is at the recommended tension the tensioner whines a lot. To get it to stop whining the belt has to be looser than it should be. Maybe it's a duff tensioner? (Febi)

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Re: Cam Belt Tensioner Stud

Post by C 20 CCO » Sun Nov 07, 2021 8:45 pm

Did your old tensioner whine? If not then I would have the new tensioner checked. If you still have the receipt for it, I’d ask for a replacement… or just change it…


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kind regards,

Dave.

To be old and wise......
You must first be young and stupid!

Previously owned: 1984 1.6 CL in alpine white; 1986 1.6 GT in met light blue over black body kit; 1990 1.8 GT2 in silver.
Currently: 1991 GT2 in Pearl green metallic.

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Re: Cam Belt Tensioner Stud

Post by james butler » Mon Nov 08, 2021 8:03 pm

did you rotate the tensioner clockwise? if you didnt the belt will rub the housing


I dont mind project cars but I HATE SANDING!!!

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Re: Cam Belt Tensioner Stud

Post by GTXGTXGTX » Mon Nov 08, 2021 10:04 pm

Yes definitely clockwise but I will check for rubbing. Where most likely? Bottom or top cover?
Thanks

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Re: Cam Belt Tensioner Stud

Post by james butler » Mon Nov 15, 2021 7:48 pm

think bottom cover but definatley worth checking
theres also the t bolt lower down that sometimes comes loose that can cause rubbing that has a 10mm nut on it i think


I dont mind project cars but I HATE SANDING!!!