Need help with timing marks , I'm not sure if volvo uses top dead center to set timing marks, because my are way off

if you are at tdc the crank key will be in line with the LH cam shaft center

If I understanding right, you set the timing on your mazda. you may have set timing on the exhaust stroke. Rotate the crankshaft again with the belts off and realign the timing marks. You need the number 1 cylinder top dead center on the compression stroke not the exhaust stroke. Also take off distributor cap and make sure rotor is pointing toward number 1 cylinder spark plug wire when at top dead center. Hope this is what you were asking.

you are in a bit of a bind. Turning the engine over will result in bent valves so do not touch the crank shaft. you have to loose off all the rockers/ cam followers even to the point of removing the cam shaft. having done that remove no1 cylinder spark plug and by the use of a thin piece of wire turn the crank until the piston reaches top dead center. find this by rocking the crank back and forward until the piston dose'n move up or down check for the crank timing mark next replace the cam shaft and position the cam lobes for no1 piston in such a position that the inlet and exhaust valves move slightly up or down when the cam is moved slightly left or right. this is called valve over lap and with the piston on top dead center means that you now have valve timing for the engine. Cam timing marks can be dot on gear to shiny link on chain or if using a belt a dot on tooth lineing up with mould mark or join on head before starting up do a compression check to prove that there are no bent valves. if you are not mechanically minded enough to attempt the valve timing method it may be cheaper in the long term to let a qualified person do the job

Top dead center:*Set breaker point gap from .018 to .022*Bring #1 piston to "Top Dead Center"*The zero "D-C" mark on the vibration damper must be aligned with the timing indicator/pointer*Rotate distributor until points begin to open slightly, then tighten distributor*Start engine & allow to reach normal operating temperature*Set warm idle at 475 RPM*Use timing light to verify that the zero "D-C" mark on the vibration damper is in alignment with the timing indicator/pointer

if you know the firing order of the engine and also the position of the no.1 cylinder you are off to a good start.
Remove the plug on the no.1 cylinder and turn the engine until the piston starts coming up on compression stroke, you can fing out if it is on compression stroke by placing your finger or thumb over the spark plug hole, you will feel the pressure under your thumb or finger as the piston starts to come up the bore.
when you can feel that pressure you can remove your thumb etc and stick a medium size screwdriver into the hole making sure you hold it from falling into the cylinder, rest the end of the driver on top of the piston and turn the engine slowly by hand only, (not by the starter) until the piston has come up to the top of the cylinder, now have a look at the harmonic balancer on the end of the crankshaft, there should be markings on it and one marking will have a "0" with TDC above it, line that mark up with the pointer and that will be top dead center

don't panic about the marks too much,find top dead centre on cyl no 1,good chance once you have you will find something that does line up between the block/timing case and the pulley. don't forget once it is fitted to ALWAYS wind the engine by hand atleast 2 times to make sure the pistons don't hit valves before starting.

Bring #1 cylinder to top dead center. as high as it will go. Set distributor in line with #1 plug wire. Then begin using timing light to get it set on.

There is a special tool that mechanics use for the alignment of the camshaft pullys. It is basically an angle iron straight edge that fit exactly into the camshft grooves.. Just make sure that the engine 's first cylinder is at the top. (Top dead center) before fitting the cam(s) into place.

there should be an acid mark (black mark) on gear, and yes cylinder #1 top dead center ps. make sure to disconnect distributor so it dont fire

TAKE FRONT COVER OFF(AFTER REMOVING FAN, BELT S, PULLEY AND FAN SHROUD).THEN REMOVE CRANK SHAFT PULLEY. WHEN COVER IS REMOVED YOU'LL SEE 3 SPROKETS, SUGGEST TO BRING CRANK TO TOP DEAD CENTER UNTIL YOU SEE ALL 3 MARKS FOR THE TIMING BELT. REMOVE BELT/INSTALL NEW AND REVERSE PROCEDURE.