Set timing by using a long screwdriver inserted in cylinder one (on b-series there are holes in the cam itself you can put a pin in it and it will hold them at 0 degrees). With the screwdriver in there spin the crank until it is at the top of it's stroke. Now you can put the timing belt on. Once that is all done and tightened up, set spark timing via the distributor and you will be good to go.