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Model specific boards => Golf mk2 => Topic started by: weazgti on 21 December 2010, 13:06
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Just been out to check because after driving my other 8v digi i realised my daily is actually quite dead on its feet.
Checked it was at tdc by sticking a extension down the plug hole.
Lined up mark on the flywheel with the gearbox casing.
(http://i973.photobucket.com/albums/ae214/weazgti/2010-12-21120041.jpg)
I still had the cam cover on and although its not too clear in the pic, it looks like its about 3 teeth out. I know it should be done with the cover removed but i just wanted to see if it was close.
(http://i973.photobucket.com/albums/ae214/weazgti/2010-12-21120113.jpg)
How could it run if its this far out? It doesnt run too bad at all, just a bit gutless at low revs then comes alive at about 3500rpm till past 6000rpm.
Is it possible to just loosen the tensioner and adjust the cam pulley without ballsing the rest of it up?
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I'd be more worried that one of your flywheel bolts is missing!
Is there an 'OT' mark on the outside face? I'd have the rocker cover off so you can confirm the postion of the cam, at TDC the lobes on #1 should be pointing up and away from each other, like this -> |\ /|
check the crank timing at the cambelt end too, the bottom pulley should have a notch that lines up with an arrow on the inner belt cover, plus shine a torch down spark plug hole #1 to verify piston really is at TDC. if whoever last worked on the car forgot to fit all the flywheel bolts, may also have not fitted the flywheel on correctly!
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Didnt notice the bolt missing :shocked:
Had a look at the pulley, it has O T stamped on the outside face.
Lined up this mark
(http://i973.photobucket.com/albums/ae214/weazgti/2010-12-21152936.jpg) which also lined up this mark
(http://i973.photobucket.com/albums/ae214/weazgti/2010-12-21153902.jpg)
Checked piston was at tdc by putting an extension bar down the hole and i removed cam cover to check the lobes
(http://i973.photobucket.com/albums/ae214/weazgti/2010-12-21155840.jpg)
(http://i973.photobucket.com/albums/ae214/weazgti/2010-12-21160110.jpg)
Sorry bout the pic quality, it was getting dark and i had to use my phone and a torch. Cam cover gasket is still on in the pic so it looks closer but when im looking at it it looks like it needs to be at least 2 teeth lower to meet the edge of the head.
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use the OT mark with the plastic inner cam cover, bit easier to get that one lined up than the punch mark to the head. it might just be the pic but the punch mark looks lined up to me? or at least as close as its gonna get sicne smallest unit of adjustment you have is 1 tooth. could be a tooth out, but as i say its hard to tell from pics
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Sorry, not clear pic i know but it does look like its at least 2 when your standing next to it.
The ot mark on the cover is above the cam pulley pointing down?
Should it all line up with that mark?
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yep ot mark on cam sprocket should line up with the arrow on the inner belt cover at tdc. easier to use this as its on the outside plus right at the top if you know what i mean
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ok cheers, ill go give that a bash in a minute.
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ok did that
(http://i973.photobucket.com/albums/ae214/weazgti/2010-12-22101351.jpg)
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never guess what but that looks like its ........out
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ok cheers, i ve never timed it all up so just wanted someone to see the marks so i wasnt doing it all wrong then pulling the belt off.
How should i do it without the belt coming off all the other pulleys, is it possible to tie it up or something.
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take dizzy cap off before you start and keep an eye on the rotor arm, if it moves put it back. then just loosen the tensioner and pull the belt off the cam sprocket, move cam round with a spanner/socket on the cam sprocket bolt and refit the belt + tension the tensioner. spin engine 360 degrees and recheck timing :)
but you'll probably need to do the dizzy timing to as per my digifant tuning guide if the cam timing is out by that much.
oh and if you don't have a tensioner tool, what i use is an allen key. fit your socket to the tensioner nut, then fit allen key to one of the tensioner holes. brace allen key to the socket, and push down to set your required tension, nip up the nut. Once you turn engine over 360 degrees recheck your tension, you want to be able to twist the belt around 90degrees at the front length below the cam sprocket
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Got it, gonna go do that in a bit. Hopefully it should go better.
So adjust it then do ignition timing again. Luckily i have atiming light so it should be sweet.
Thanks for the help :smiley:
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All done, loads more go low down. Havent had a chance to really give it some but just the responce and low down torque is so much better. No lag at all it just goes instantly!
Thanks for the help :smiley:
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Nice to see youve made a nice improvement there mate!
I wish i knew more about timing, are there any beginner novice guides on timing?
Im trying to build up my skills but as it stands with timing i have ZERO. Is it something left to a garage unless i have more experience?
cheers
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Have a look through rubjonnys tuning guide in the maitenance section. I ve never timed it before so i put all the pics up on here for someone to reassure me id done it right. Once you know where all the marks are it s easy. Something i was nt sure of.
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cheers, ill take a look!
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in the pics of the cam sprocket it looks like the belt is hanging over the front edge of the sprocketif it is this could be the same problem i had which is the sprocket is on the wrong way round and thus knocking your cam timing out
im sure once i put the notch with the ot marks to the back and timed it up again the belt stayed on the sprocket fully instead of riding over the edge and power was as it should have been
also does yours burble like a rally car
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Think the belt was flush with the edge of the pulley. No rally burbling here, its all good.