The timing marks should be dot to dot.
Dot to Dot
The small hole in the larger gear is the timing mark. The smaller gear should have a dot marking the tooth two left of the shaft key.align this dot to dot the hole pointing to the dot
The crank gear dot should be at 12 o'clock stright up when #1 pistion is all the way to the top of the cylinder. The cam gear dot should be at 6 o'clock stright over top of the crank gear dot. Then put it back together.
If you mean timing chain and gears...Yes...they still install dot to dot. With the cam gear dot at 6 o'clock position and crank gear at 12 the engine is ready to fire on #6 cylinder. To bring it to #1 after installing the timing chain and gears, rotate the crank until they are both at the 12 o'clock position.
The dot on the bottom gear goes straight up and the dot on the top gear points straight down when the timing chain and gears are installed correctly.
YES Stright over top of each other.
Put the crank shaft at TDC. There is a dot on one of the crank gear teeth. It should be pointing toward the cam gear. Put the cam gear on without the chain. Turn the cam until the hole in the cam gear is pointing toward the crank. In other words, the hole in the cam gear and the dot on the crank gear should be in line. Then simply remove cam gear and apply the chain. The computer does the fine timing. Nothing to adjust.
When the engine is at #1 TDC, the dot on the crankshaft sprocket is at 12 o'clock, and the dot on the cam sprocket is at 6 o'clock.
dowel holes in head with holes in gears, dot on crank gear straight up with dot on block
The timing marks are dots on the ends of the camshaft and crankshaft. They are on the sprocket ends where the timing belt or chain connects. The dots should be pointing towards each other for proper setting. The cam dot should be pointing down and the crankshaft dot pointing up. The dots or marks can only be viewed when the timing chain cover is removed. hope this helps...
Dot goes to dot. Bottom gear dot stright up at 12:00 oclock. Top gear dot stright down at 6:00 oclock.