Author Topic: Changing tappets on a 8v  (Read 4703 times)

Offline Daston

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Changing tappets on a 8v
« on: 07 May 2009, 08:24 »
Hi guys,

My new tappets arrived yesterday and just wanted to confirm is my line of thought is correct. My plan was to mark up the belt and pulleys and then G clamp the cam belt to the crank pully so it cant slip, lossen the tentioner pulley and remove the cam belt from the cam pulley so that I can lift the cam shaft out. Would this work or do I need to remove the whole belt? The belt is pretty new so dont need to replace it. 

Offline Ben Lessani

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Re: Changing tappets on a 8v
« Reply #1 on: 07 May 2009, 08:47 »
http://www.golfgtiforum.co.uk/index.php?topic=49436.msg886430#msg886430

Read.

You can clamp the belt if you want, but its not advised. Mark the cam relative to the belt, you can't clamp the belt to the crank because the timing belt cover and aux crank pulley is in the way. The way to do it is loosen the tensioner a fraction, slip the belt from the cam, then use molegrips to pinch it to itself over the aux shaft and tensioner.

For the 5 minutes it takes to remove the aux. belt and timing belt cover and mark it properly, its going to save you posting back with a new thread how do I set my valve timing. You don't need to replace the belt just because you've removed it...

Offline Daston

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Re: Changing tappets on a 8v
« Reply #2 on: 07 May 2009, 13:24 »
ahhh cheers dude read your how to guide a few times. Am I right in thinking the only reason the crank pulley needs to come off is to remove the timing belt cover?? As mine dosnt have the cover on (didnt know they had them until I saw them for sale)

Offline DarnPB

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Re: Changing tappets on a 8v
« Reply #3 on: 07 May 2009, 18:35 »
You only need to remove the bottom pulley if you are to replace the cam belt. To make sure that you put the belt on in the right position, put the No.1 cylinder into TDC at the compression stroke. look on the back of the cam pulley and you should see a punch mark. This should be aligned with the top of the head. You then slacken off the tensioner and remove the belt from the top pulley. Fitting is reverse of removal as long as you are sure that the crank has not turned in the meantime, which is unlikely.


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Offline Ben Lessani

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Re: Changing tappets on a 8v
« Reply #4 on: 07 May 2009, 21:25 »
as you are sure that the crank has not turned in the meantime, which is unlikely.

And also the aux shaft for the dizzy/oil pump ;) That does turn easy.

Offline Daston

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Re: Changing tappets on a 8v
« Reply #5 on: 08 May 2009, 13:25 »
cheers guys will make a start on it at the weekend and take my time. At least its a lot easier to get at than the other car.

Offline Diamond Hell

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Re: Changing tappets on a 8v
« Reply #6 on: 08 May 2009, 22:45 »
Errr, I might be wrong, but if you're releasing the cameblt then you should replace the belt.

For the money I think you'd be a tit not to replace it.

Replaced tappets in an engine with a snapped cambelt and bent valves aren't a good look.
Just because you're offended doesn't make you right.

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Offline Ben Lessani

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Re: Changing tappets on a 8v
« Reply #7 on: 09 May 2009, 00:14 »
The belt is pretty new so dont need to replace it. 

You should know better DH, 8vs are non interferance (well, prior to lairy cams and heavy skimming)

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Re: Changing tappets on a 8v
« Reply #8 on: 09 May 2009, 00:15 »
The belt is pretty new so dont need to replace it. 

You should know better DH, 8vs are non interferance (well, prior to lairy cams and heavy skimming)

do you really want to chance it?

Offline Ben Lessani

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Re: Changing tappets on a 8v
« Reply #9 on: 09 May 2009, 01:01 »
As much as I'm for replacing belts when they need it, the timing belt is designed to last around 60k miles  - whats the point in replacing it until its remotely near that threshold. If the OP says its pretty new, be it on his head, but IMO if it only had, say, 15k on it - why bother replacing it.