it uses two chains and they both have painted links to make it easier. now the crankshaft key should be at 12oclock and the cams have two marks each. they have an arrow and a slash the arrow is the mark that goes to the painted link and the slash goes to a mark on the cilynder head this job is tricky even for an experience mechanic so if you never done mechanical work before be carefull here is another tip always turn your engine two full turns by hand after instaling a new timing chain or belt to ensure that the engine turns freely
align the cams to the E & I marks on cam. You will see notches right beside them. Align the crank with key way up.
just below the engine oil dip stick. It has and octagonal shape
You can try by vacuum- try to bring it to 20 Hg at idle, but a timing light is much more accurate
To set the ignition timing on a Ferguson TO 20, first ensure the engine is at top dead center (TDC) on the compression stroke for the number one cylinder. Next, align the timing marks on the flywheel with the pointer on the timing cover. Adjust the distributor by loosening the hold-down screw and rotating it until the points just begin to open at the specified timing mark, typically around 4 to 6 degrees before TDC. Finally, tighten the distributor hold-down screw and recheck the timing to ensure it remains correct.
there are 20 marks in a score
There are 6 marks on the crank pulley, the first red line is 5°ATDC then white TDC then 5° BTDC and so on ending with the yellow 20°. (should be set to 20° BTDC.) These should be viewed from the drivers side of the car; align the marks with the pin protruding from the front cover.
Here is a link from a repair site i subscribe too. Hope it helps. It is an "Exploded" View of all the components for the timing stuff. http://www.ondemand5.com/mric/common/asp/ImageViewer.aspx?MOD=REPTIFF&MODULE_ID=1&SESSION_ID=%7BE80FA39E-8189-4681-B82C-6C58934EA88E%7D&IMAGE_GUID=90C10183&PRINT_BW=0&ARTICLE_TITLE=TIMING%20BELT%20REPLACEMENT%20-%202.0L%20&%202.3L%20-%201974-94%20EXCEPT%20PROBE&YEAR=1993&MAKE=Ford&MS_MODEL=Mustang%20LX&IMAGE_CAPTION=Fig.%201:%20Exploded%20View%20Of%20Timing%20Belt%20&%20Components%20(Typical)&COURTESYTAG=Courtesy%20of%20FORD%20MOTOR%20CO.& Most all timing marks are located on the harmonic balancer. A timing tab is located on the sheet metal that overhangs the balancer. Harmonic balancer is the lowest round device on an engine that has the belts running around it.
To time a Mazda RX-7 with an MSD ignition, start by ensuring the engine is at operating temperature and set to idle. Use a timing light to check the ignition timing by pointing it at the timing marks on the crankshaft pulley and the timing tab. Adjust the timing by loosening the distributor hold-down bolt and rotating the distributor until the desired timing is achieved, typically around 18-20 degrees BTDC for a stock RX-7. Finally, re-tighten the distributor bolt and recheck the timing to ensure it remains consistent.
It will take you approximately 6 hours, if you keep the timing marks in place. Also, consider replacing water pump at same time, it takes about 20 minutes longer to do it as you replace the timing belt.
The engine is a push rod type and therefore requires no timing belt changes. (Not bad for a 20 year old eh!)
there are marks on the timing cover that remains attached to the block and there are arrows on the cams. there is a pointer down by gear on crank and a dimple on gear align these marks
looking at the timing marks from the top left to right you have 5 degrees after top dead center, then top dead center then 5 degres 10, 15 then 20 befor top dead center. the timing is 7 degrees before top dead center