This may seem like a dumb question , but what are the timing specs for B20f engine? I have the sticker under the hood, a chilton's manual, and they both suggest timing adjustments differently. Basically the volvo spec sticker under the hood says "10° adv@700-900rpm-->No Vac". I set the timing to this and the car is sluggish/hesitant/rough idle. what do I do now.... I have about fifteen years under the shade-tree working on enigines of all sorts.. What I need to know is:
1.what is the max adv°?
2.How much adv does the the centerfugial weights adv and @ what rpm?
3.Why the H$!! does the Vac Retard the timing (noteworthy-->the car runs better w/o vac connected)?
My thought was to set the timing to "MAX adv @ 2000+ rpms" set the idle and call it happiness. (note: my crank pulley has deg° marked to 40°)
History with the ignition all together:
-Parts replaced in last 5 months: -Distributor(Bosch-New Complete) -plugs and wires -ignition harness (up to key)
-Parts Mods: Ballast resistor, Accel Coil, Crane XR_700 Ign_Module

Any help with spec's would be happiness. ---Eric/Portland-- 73/145/b20f