Well, this is gonna be expensive

"whoarder is tellurium" (whoarder) 11/01/2015 at 13:54 • Filed to: audi

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Noticed the A8 this morning making a very bad metallic racket up front and on the front drivers side of the engine. Gee, I wonder what is there...

Oh, it must be the infamous timing chain tensioner! LOVELY. At 138,000 miles I should’ve known!

I seem to recall changing two of these on my B5 A4 2.8 5v at one point.

I has a sad.

Supreme Chancellor and Glorious Leader SaveTheIntegras > whoarder is tellurium 11/01/2015 at 14:00

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A moment of silence please for this mans wallet

pip bip - choose Corrour > whoarder is tellurium 11/01/2015 at 14:09

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that’s “German engineering” for you.

aberson Bresident of the FullyAssed Committe > whoarder is tellurium 11/01/2015 at 14:09

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whoarder is tellurium > pip bip - choose Corrour 11/01/2015 at 14:14

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Eh yeah, but I could think of some design faults that kill other manufacturer’s engines out there.

This one particular deal is definitely hereditary to the 5V engines. (1.8T,2.7T,2.8,3.0,4.2 etc)

pip bip - choose Corrour > whoarder is tellurium 11/01/2015 at 14:15

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yet it’s only the Germans that over complicate things.

Supreme Chancellor and Glorious Leader SaveTheIntegras > aberson Bresident of the FullyAssed Committe 11/01/2015 at 14:17

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That gif is outstanding

Dr. Zoidberg - RIP Oppo > whoarder is tellurium 11/01/2015 at 14:19

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Keep us updated! Would love to see the quote

whoarder is tellurium > pip bip - choose Corrour 11/01/2015 at 14:21

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There are some Ford and Chrysler products out there that I’d run away from immediately and come back to set on fire.

whoarder is tellurium > Dr. Zoidberg - RIP Oppo 11/01/2015 at 14:22

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Might do so. I might end up sourcing the parts from aftermarket and having the dealer do the work. It is getting too close to 30 degree temperatures to sit on this project in the garage.

Shark-Attack > whoarder is tellurium 11/01/2015 at 14:36

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Looks like fun.

BugEyedBimmer - back in the Saddle Dakota Leather > pip bip - choose Corrour 11/01/2015 at 14:39

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You’re screen name is very befitting right now.

V12 Jake- Hittin' Switches > whoarder is tellurium 11/01/2015 at 14:42

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Godspeed. Luckily, the V12 in my car is free of engine destroying faults. ABC on the other hand...

whoarder is tellurium > Shark-Attack 11/01/2015 at 14:44

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V12 Jake- Hittin' Switches > whoarder is tellurium 11/01/2015 at 15:16

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What year is your A8 ?

whoarder is tellurium > V12 Jake- Hittin' Switches 11/01/2015 at 15:43

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2001 A8L

toadterror > whoarder is tellurium 11/01/2015 at 16:01

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I mean, what were you expecting? Having said that... I got a ride into town recently.. he drove a 4.2 v8 allroad..

I was like, “Soooo.. that cam-chain tensioner is a bit of a b*tch, huh?”

He laughs.

“Well only if you wait for it to fail” - he says, and - “I’ve had this one done twice”

I’m a bit impressed, this guy knows what’s up. He points.. at the display.. I look.. the odo says 359000kms!!! I kid you not.

Trevor Slattery, ACTOR > Shark-Attack 11/01/2015 at 16:05

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So what is that FIVE different chains on that engine? WHY?

Shark-Attack > Trevor Slattery, ACTOR 11/01/2015 at 16:52

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I think it’s four. I have spent a bit looking at these engines and still don’t understand why there’s an extra chain in there.

whoarder is tellurium > toadterror 11/01/2015 at 17:34

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Wasn’t expecting anything really. I know its an old German top-end car. I am well aware of the flaws/issues the 5 valve engines bring with them and seen them crop up in other Audi’s that I’ve owned in the past.

On the flip side, this isn’t exactly my daily driver either. My G35 handles that task and I bought that car for that purpose because it offers what I want and is also Japanese to boot.

whoarder is tellurium > Shark-Attack 11/01/2015 at 17:47

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Keep in mind, I don’t have that variant of the 4.2 V8.

The 4.2 setup in my car has a traditional timing belt setup but with a small chain on each bank to drive both camshafts at the same time.

The hydraulic tensioners between the chains also provide basic variable valve timing too.

AMGtech - now with more recalls! > pip bip - choose Corrour 11/02/2015 at 21:34

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Meh. If you ask me the Germans make sense but are expensive, the ‘muricans are wandering around in the dark, and the Asians are good at slapping things together as cheaply as possible which to me equates to “what the hell were they thinking when they did this?".

AMGtech - now with more recalls! > whoarder is tellurium 11/02/2015 at 21:35

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Is that the ridiculous chain-in-the-back engine-removal one?

whoarder is tellurium > AMGtech - now with more recalls! 11/02/2015 at 21:37

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Nope! Just belt driven chain linked cams with computer adjusted hydraulic tensioners.

AMGtech - now with more recalls! > Shark-Attack 11/02/2015 at 21:38

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Primary, two secondaries, and oil pump. But it’s very poorly designed and could have been done much more efficiently.

AMGtech - now with more recalls! > whoarder is tellurium 11/02/2015 at 21:41

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Oh nice! Those aren’t terrible to do IMO. At least on the one 2.8 I did years ago. Make sure you do cam seals at the same time (but I’m sure you knew that already). Still sucks it had to happen though, my condolences for the death of your wallet.

whoarder is tellurium > AMGtech - now with more recalls! 11/02/2015 at 21:48

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Yeah. I eventually did both chain tensioners on my 2.8 A4. That was a nightmare in itself because at the same time, after the timing belt job the “new” timing belt tensioner got stuck a few miles later. One chain tensioner ate itself after another. My theory was that the slack in the timing belt did it.

My 1.8T A4 with the same head design was absolutely a charm in comparison. Well, until the turbo wastegate actuator died out.

AMGtech - now with more recalls! > whoarder is tellurium 11/02/2015 at 21:52

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It’s totally a silly set up but as far as I know they’re actually solid engines (well, not the 1.8t, but that’s usually because of the owners).

whoarder is tellurium > AMGtech - now with more recalls! 11/02/2015 at 22:08

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That is true, the engines themselves are solid and that shared 5 valve head design is quite unique. That being said, all the small things bolted onto the engine fail- from PCV to thermostat housings to dip sticks.

Shark-Attack > AMGtech - now with more recalls! 11/02/2015 at 22:30

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I’m wondering why the oil pump isn’t on the primary.

AMGtech - now with more recalls! > whoarder is tellurium 11/02/2015 at 22:54

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Yeah, nobody is perfect and at least those things are relatively cheap and simple.

AMGtech - now with more recalls! > Shark-Attack 11/02/2015 at 22:56

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Because VAG? I don’t know. But it’s actually pretty common to do it that way. Although most oil pump chains are about half the length and size of that one.

Shark-Attack > AMGtech - now with more recalls! 11/02/2015 at 22:59

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Are those gears part of the oil system too? Seems like so many things to go wrong, with no system redundancy.

AMGtech - now with more recalls! > Shark-Attack 11/03/2015 at 00:00

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Best guess is that they’re part of the pump itself. Way too many things to go wrong. I honestly can’t even fathom how poorly designed that engine appears to be. It hurts to think about.