1994 Audi S4 Timing Belt Service Step-By-Step (mostly)

Changing the timing belt, water pump, thermostat etc. on your Audi UrS4 or UrS6 2.2 might seem like a bit of a daunting task but it's not as scary as you might think as long as you have the right tools.
The most important specialty tool used in the timing belt replacement is the damper pulley locking Tool # 3256. It is unique to the 1992-95 S4/S6 with the AAN. You'll want to obtain this tool first or find someone that will loan it to you.
For our U.S. based viewers, here is a full list of things to do (and where to get them) while you're in there.
Coolant Flange at rear of block, aluminum - shop.efi-motorsport.com/colle...
Billet coolant tee at rear of engine - shop.efi-motorsport.com/colle...
Billet thermostat housing for AAN engines - shop.efi-motorsport.com/colle...
OR if you want a stock new plastic housing - www.fcpeuro.com/products/audi...
I5 hardened timing gear cog - shop.efi-motorsport.com/colle...
Serpentine belt tensioner (if yours is shot) - shop.efi-motorsport.com/colle...
Timing Belt Kit (with Graf water pump. Hepu or Graf have both been fine for me) - www.fcpeuro.com/products/audi...
Serpentine Belt - www.fcpeuro.com/products/audi...
Thermostat (87D) - www.fcpeuro.com/products/audi...
I run the "period correct" Pentosin NF antifreeze mixed 50/50 with distilled water. Your choice may vary here but be sure to properly flush the system if you're switching between different coolant types. The important part for the AAN is that it is phosphate free.
www.fcpeuro.com/products/nf-e...

[@SLOWIMPORTS]

ur doing the lords work

[@jdmimportlogistics]

Another excellent video thank you! Just wondering is there a specific product you like to preserve the axle and steering rack boots? Also an episode on sensors would be much appreciated!

[@SCARSORGofficial]

Historically I had been using Vinylex but it is NLA so I've been using CQuartz Perl for the vinyl and rubber bits.

[@urs6onfuturas975]

It's like we're on the same preventative maintenance schedule. I know I've already asked for help multiple times but would you happen to know where to find the crank pulley bolt for the AAN? I've tried fcp, 034, ecs, efi, and even places like advanced or rock auto and can't find them.

[@SCARSORGofficial]

Unfortunately the stock bolt is now NLA as well. There is a BMW bolt (BMW M18x1.5 65mm) that apparently can be used in place of the NLA bolt from VW/Audi: www.autohausaz.com/pn/BM-11231736585

[@urs6onfuturas975]

@@SCARSORGofficial thank you!

[@zc5092]

When you usually do a timing belt and you replace the cam seal, do you do it after the new belt is on and in time or do you tackle it before fully digging in to the rest of the job. Just curious as I need to do my Timing belt and cam and crank seals

[@SCARSORGofficial]

Honestly, when it comes to the camshaft seals I usually just inspect them for any signs of leaking. I rarely see leaks from them on these cars but I do tend to replace them every other timing belt service just for good measure. It's actually not horrible to replace them after the fact if you're reasonably confident working on cars. It would be the same as doing the cam sensor so you'd zip tie the timing belt to the cam sprocket in a few places, make a few reference marks and then release tension on the belt to remove the sprocket.
If you have any signs of leaks or no record of them being replaced do them. I'd get your timing belt into position with the locking tool then zip tie the belt to the cam sprocket and do the cam seals first.