I'm not agreeing with Pete. When You will keep distances (in belt's teeth) between characteristic points of every gear pulley, there's no possibility to change timing. Notice, that after tensioning a belt, there's no posiibility to change timing (telling differently: change position of crank, and each camshaft) by less, that ONE TOOTH distance. So any "milimetric" errors in timing are not possible at all.
But I agree in 100% with second part of Pete's post: Saving some pences on new bearings and tensioner isn't worth a grief, when You must pay for another engine in place of Yours - internally damaged due to timing crash...
So - JohnW - buy complete set for Your machine, and after that - take a great care with changing timing set yourself. In audi V8's it's really complicated. Turn attention, that You can tension the belt with two bearing: tensioner, and excentrical mounted roll bearing. Study properly, how tensioner works, and guess propelrly what for addidtional tensioner exists!
