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D2 - Engine Bay Everything under the bonnet

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  #1  
Old 23rd January 2018, 07:34 AM
Linea_rossa Linea_rossa is offline
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Default Belt or chain?

No I'm not talking 50 shades of grey but engines.

Seem to be finding conflicting answers, got a 4.2 v8 A8 in a pre face-lift d2

Can anyone confirm if it's a timing belt or chain

Many thanks

Lee
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  #2  
Old 23rd January 2018, 08:04 AM
paulrstaylor paulrstaylor is offline
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Almost certainly a belt
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Old 23rd January 2018, 08:11 AM
MikkiJayne MikkiJayne is offline
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Timing belt All D2s have belts, as do early D3s.

There are chains in the heads to link the two cams together but on a PF you don't need to worry about them

To swap the belt needs special tools (obviously). I have the crank holding tool, but I don't have the cam alignment tools which go in the back of the heads. I'm not sure who has a set of these tbh:

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Old 23rd January 2018, 09:36 AM
Linea_rossa Linea_rossa is offline
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Ahh many thanks, just re checked what I was looking at and appears it was the 4.2 out of an a4.

Thanks for the help, any suggestions for interval on replacement?

TIA
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Old 23rd January 2018, 11:15 AM
paulrstaylor paulrstaylor is offline
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S4 was the first chain driven v8, so that makes sense

No idea on interval Iím afraid...... but I am sure someone else will advise!
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Old 23rd January 2018, 12:31 PM
MikkiJayne MikkiJayne is offline
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80K or five years, whichever is soonest.

Always change the hydraulic damper / tensioner. I've seen more engines killed by failed tensioners than anything else.

I do the water pump and thermostat every other belt. Genuine pumps are <£100 exchange from TPS.
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Old 23rd January 2018, 05:42 PM
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Conan_the_Librarian Conan_the_Librarian is offline
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Quote:
Originally Posted by MikkiJayne View Post
Timing belt All D2s have belts, as do early D3s.

There are chains in the heads to link the two cams together but on a PF you don't need to worry about them

To swap the belt needs special tools (obviously). I have the crank holding tool, but I don't have the cam alignment tools which go in the back of the heads. I'm not sure who has a set of these tbh:

I have them.
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