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'06 A8 timing belt controversy

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Old 01-25-2014, 08:22 AM   #1
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Default '06 A8 timing belt controversy

Have an '06 A8 mfg'd in Oct '05, dealer tells me the change from belts to chains was made in July'05. They say my engine code is BGK so it takes a toothed belt. Trying to make sense of that. Is there a physical exterior difference in the belted and chain engines?
Thanks guys, Ralph
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Old 01-25-2014, 08:39 AM   #2
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Pardon my French, but the person at your dealer is incompetent on the subject. F in Audi product knowledge.

To i.d. them, an easy way is just look for the covers where the belt is--about an inch and a half of various covers directly in front of the cylinder heads and then downward all around the front of the motor in various shapes. The serpentine fan belt is run yet further forward in front of those, as opposed to much closer in my the actual motor castings.

I would have to look at intro dates, but the reference is likely to the C6 A6, which I think was probably the first one introduced with the FSI (non belt) motor among the 4.2's.
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Old 01-25-2014, 08:41 AM   #3
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04-06 timing belts are the same design and tooth and everything. 07 is when they started going to timing chains(no more timing belt).
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Old 01-25-2014, 08:45 AM   #4
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2003 - 2006 came with BFM engine. They have timing belt. It is at the front of engine under the black plastic cover.

Click the image to open in full size.

2007 - 2010 came with BVJ engine. They have chains driving everything but generator. They are at the back of engine, so no plastic covers at the front. On the top of those engines you can find FSI, meaning Fuel Stratified Injection.

Click the image to open in full size.

Last edited by mishar; 01-28-2014 at 12:53 AM.
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Old 01-27-2014, 02:24 PM   #5
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It is definitely a BGK and has a belt. Although mfg'd in Oct of '5 they were probably using up belted engine inventory.

Any opinions on a good belt kit?
Thanks fellows,Ralph
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Old 01-27-2014, 04:50 PM   #6
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No. They switched to BGK for MY 2007.

Edit: I should said BVJ.

Last edited by mishar; 01-28-2014 at 12:54 AM.
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Old 01-27-2014, 05:07 PM   #7
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This is from a MY06.
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Old 01-27-2014, 05:14 PM   #8
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Month?
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Old 01-27-2014, 05:19 PM   #9
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Quote:
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Month?
I would find that where?
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Old 01-27-2014, 07:10 PM   #10
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What is the tenth digit in your VIN?
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Old 01-27-2014, 09:10 PM   #11
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Only 2006 has BGK, everything else before the facelift BFM. 06 is the only year with belt and the engine code is different from the others belt.

Cheers,

Louis
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Old 01-28-2014, 12:57 AM   #12
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Right. Too many letters and codes. But it has a timing belt.
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Old 01-28-2014, 07:16 AM   #13
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Quote:
Originally Posted by mishar View Post
What is the tenth digit in your VIN?
WAU-LL4-4E-8-6-N-014240
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Old 01-28-2014, 07:25 AM   #14
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It is 2006 and engine is BGK. I was thinking BVJ, which is FSI engine started 2007.
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Old 01-28-2014, 01:39 PM   #15
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Quote:
Originally Posted by figleaf11 View Post
It is definitely a BGK and has a belt. Although mfg'd in Oct of '5 they were probably using up belted engine inventory. Any opinions on a good belt kit? Thanks fellows,Ralph
Continental pro series timing belt and pump kits are a decent OEM quality replacement option.
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Old 01-28-2014, 03:03 PM   #16
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Default Switch to timing chain

Quote:
Originally Posted by figleaf11 View Post
Have an '06 A8 mfg'd in Oct '05, dealer tells me the change from belts to chains was made in July'05. They say my engine code is BGK so it takes a toothed belt. Trying to make sense of that. Is there a physical exterior difference in the belted and chain engines?
Thanks guys, Ralph
I'd be willing to believe that the switch to a timing chain occurred in July'06, in time for release of the 2007 model year, but definitely not in '05.
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Old 02-03-2014, 08:27 AM   #17
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Any opinions on which kit to use other than Blaupart. Nothing against them just wondering if there is another as good but less expensive.
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Old 02-03-2014, 09:22 AM   #18
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I do not now have an Audi with a timing belt, but had one on the first of the Audi 8's (I believe - model year 1990), called the V8.

BUT, I do own a Porsche 928 GTS (and owned 5 928's previously) all of which have a similar belt for the cam drive/timing. I do 95% of my own service work on this car. These belts are longer than the Audi belts, and many 928 owners, myself included have found that Continental belts tend to stretch over time significantly more than the OE Porsche belt, or the aftermarket Gates belt. A 928 parts supplier friend has determined that Gates is NOW the OE supplier for the Porsche OE belt (928 production was stopped in 1995), and the only one I will buy for my GTS.

So, I'd probably be much more oriented to buying a Gates belt if I were needing a replacement for a pre-2007 Audi. Just my 'opinion'.

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Old 02-03-2014, 10:17 AM   #19
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I can't think of a single reason to avoid the OE belt. To save $20?
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Old 02-03-2014, 02:09 PM   #20
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Quote:
Originally Posted by jandreas View Post
I can't think of a single reason to avoid the OE belt. To save $20?
$20 difference wouldn't be a good reason, but $400 difference for all OEM parts needed might be.
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Old 02-03-2014, 02:09 PM
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