In "Audi > TT > 2000 - 2005 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMU, BEA
10 - Engine - Assembly Tightening torques," the following torques are given for the engine/transmission bolts:
Bolts 1,2,3,4,8; 65 Nm.
Bolts 5,6,7; 45 Nm.
Additionally, no mention is made of replacing the bolts.
In "Audi > TT > 2000 - 2005 5 and 6 Spd. Manual Transmission 02M, 02Y All Wheel Drive 34 - Transmission, removing and installing Transmission (vehicles with 4 cylinder engine), installing", these DIFFERENT torques are given:
Bolts 1,2,3,4,8; 80 Nm.
Bolts 5,6,7; 40 Nm.
And it says to always replace the bolts, even though they do not appear to be torque-to-yield ones (no "x" Nm + 90 degrees).
Message was edited by: msauve
The info I have uses the first specs you list. It lists just about every other bolt as a TTY that needs replaced, like all the mounts, the driveshaft, and even the ones on the dogbone mount underneath. I'd guess they should be replaced. Mercedes has long been a supporter of replacing any bolt you remove, not suprised Audi is doing that now.
40 to 45 is only 3 ft./lbs difference, really won't matter. The others are 10 ft/lbs. Split the difference if you can't get verification. Hope this helps some.