Audi A4 B8 2.0 TFSI Timing Chain Question

[Ianxxmt]

Question: If I am doing preventative maintenance for my timing chain, should i do both upper & lower portions (is this a thing for my engine (2.0 TFSI)? I am seeing a lot of kits online that include the TSI, but don't list the TFSI engine.

Context: I asked Audi for a quote on a full/ultimate kit. Here's what they gave me:

06K-109-158-AD 101G CHAIN 213.90 213.90 213.90
06H-109-158-J REPLACING PART-NO. FOR ABOVE PART-
06H-109-509-Q 101G RAIL 45.54 45.54 45.54
06H-109-469-AP 101G RAIL 29.93 29.93 29.93
06H-109-469-T 101E RAIL 17.85 17.85 17.85
06K-109-467-K 101G TENSIONER 116.93 116.93 116.93

They didn't include any parts for the lower chain, bolts, rail, tensioner, seal... etc...

Am I missing something here? Any advise would be appreciated!


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[van462]

The list audi gave you looks good, you will need the anaerobic sealant for the lower cover, I recommend a new gasket for the upper timing cover and for the intake timing solenoid. The timing chain is fighting the valve springs so it actually has changing loads. The remaining two chains, one for oil pump and the other for balance shafts don't see the same loads and haven't had the same failures. Look in the DIY thread. http://www.audizine.com/forum/showth...nk-Compilation Its fairly well covered

[jfo]

I agree about the chains. The chain wears at the link pins, eventually causing the chain to elongate. The timing chain is quite long and therefore has the potential to increase length or "stretch" to a greater degree than the shorter chains. A short chain would need considerable wear to stretch to the point of skipping sprocket teeth. My son has a 2000 GMC pickup with over 300,000km on the original timing chain. It is very short.

[Ianxxmt]

Thanks for the replies! I was able to find cheaper OEM parts outside of the dealership haha. Just need to get the sealant for lower cover and new gasket like you suggested


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[BreckAvant]

I would suggest that you also get a replacement "lower cover" as a precaution. The removal process of the original cover can easily bend the metal and potentially cause an oil leak if reused. ECS tuning had a complete Lower Timing Cover kit that included bolts,sealant and crankshaft seal. Also the big M16 x 75 bolt that secures the harmonic balancer pulley is a torque to yield bolt and is recommended to be replaced. The job also needs a couple special tools if you don't already have them. I just did the job a few weeks ago and can help out with any procedural questions if needed. There are several useful threads here on the AZ site as well. Good Luck