Cam chain replacement

[OwenED30]

Hi all, was carrying out timing chain replacement on my eddy over the weekend, of course the adjuster bolt rounded (correct tool used) so had to try and force a bigger torx into the head with no joy, so I’m going to have to drill it out…. I marked the cams and they moved slightly as did the cambelt markings but all relative to the same amount. I put it all back together and now the chain is very noisy (wasn’t before) no problems with the way the engine runs…
I’m therefore not using it and going to sort it before I use it again…

Is my chain noisy as I’ve been hammering a bigger torx bit in and shwarf has possible gotten into the adjuster oil feed holes or is it possible that the timing has jumped, despite all the marks moving relative to one another…I’m going to change the adjuster anyway as piece of mind (anybody have the part number?)

Cheers

[mjmallia]

You most probably snapped one of the plastic rings on the cam chain cover, on refitting.

[mjmallia]

Puddings image:



A break in one of the rings or excessive wear on the adjuster, reduces the oil pressure to the tensioner........then creates the rattle

[OwenED30]

Thanks for the reply, I was thinking it might be due to a lack of oil and the chain or tensioner being noisy so this reassures me a bit, is there any tips to putting the cover back on without breaking the rings?

Was hoping I can get it off, get the bolt out, fit new chain, tensioner and adjuster and fingers crossed be back to where I was prior to messing just with a new chain 🤞🏻

[mjmallia]

All depends on your cam adjuster, and sounds like it has wear.  Mine does too, so on re-insertion the rings can catch on the grooves that have worn in......it should be smooth, so extra care required or replacement cam adjuster to resolve it properly.

Looking into replacing mine and that will also increase the oil pressure to the cam adjuster and tensioner, instead of it bleeding off making a rattle at certain rpm or idle.

[OwenED30]

Yeah just saw this on AKS website, new adjuster for me I think whilst
I’m messing in there

[mjmallia]

Yeah, just ordered an INA one as the genuine VW version is £700 all in from TPS......I just can not make myself spend that anymore (age of car etc) even if it is mint like mine.

[OwenED30]

By any chance is that the INA one on eBay from auto-parts1_666? I saw this one but then saw it was coming from China so I questioned the reliability of it being an INA?

[mjmallia]

No.  Bought mine from AutoDoc so I know it will be genuine.  They have a good deal on it at £128

[mjmallia]

This one and ordered elring gaskets etc at the same time

https://www.autodoc.co.uk/ina/18264136

[OwenED30]

Yeah good shout mate, INA good quality think I’ll do the same, you ordered new oil rings? Rang VW earlier and they didn’t have a clue what I was on about

[mjmallia]

Yes, elring ones also from AutoDoc.  Used them already when I fixed a broken ring due to the adjuster groove wear.........fit perfectly

These ones:

https://www.autodoc.co.uk/elring/16598678

[OwenED30]

What a hero you are, cheers for the help mate good luck with yours 👍🏻

[mjmallia]

Thanks

[G-olf]

Recently done this job on mine as no history of it ever being done.
Adjuster bolt held up ok but broke the lugs off the sealey cam locking tool instead. I recommend an assistant counterholding the camshaft as you undo the bolt, eases the stress on the locking tool and helps keep everything lined up.
I bought all genuine parts and can confirm the genuine tensioner is INA
I replaced the oil control rings, even though I was really careful on removal of the old ones I only managed to save 1 of the 3. They were not broken beforehand but had become really brittle probably due to baking in hot oil over time.
Good luck