One more ? on 89 740 GL....

Pull all the plugs and put your finger over the #1 spark plug hole. You will feel it come up on compression while manually turning the crank pulley. Use a wooden dowel, plastic rod, or other similar tool to feel when the piston is all the way up. Do not use a metal tool becasue if you cause any scratches on the piston, the metal burr can cause preigition detonation (ping and knock).

To find TDC exactly, turn the motor back to where you feel the piston go down a bit. mark this position on the pulley. Rotate it in the opposite direction and feel where it begins to go down a bit. Mark that position. Midway between the two marks should be poretty darn close to TDC. Mark the balancer with a scribe along a convenient place that aligns with a mark on the motor.

You know the rest...

__ __ Randy & \ \/ /alerie's \__/olvos '90 245 Estate - '93 965 Estate "Shelby" & "Kate"

The outer guard sheave on the crankshaft wheel has a notch that aligns with the protruded index line on the front of the engine. The dot on the camshaft aligns with a notch cut in the front of the cam cover. If your distributor is in the back of the head the dot on the jack shaft pulley is irrelevant otherwise use the single line markings on the new belt to stablish the correct location.

Install the belt starting at the crankshaft, around the jackshaft and around the camshaft so that all the slack is on the tensioner side. Slacken the nut on the tensioner and pry it against the spring all the way to the loosest position and tighen the nut (Probably shuld be the first step). Use a clothes pin clamp to hold ther belt stationary on the cam wheel and slide the belt over the tensioner pulley. Loosen the nut and let the the tensioner find its own center. Tighten the nut. Check your timing marks for proper alignment. Install the crank bolt and turn the motor through 2 or four revolutions to be sure nothing is binding. Inspect the timing mark alignment one more time. If there was too much slack on the left side of the motor (right side as you face it) the tensioner will pull the crank pulley clockwise as you face the motor and your marks won't line up.

In four cylinder history, motors set up with the crank on TDC and the mark on the cam gear or sprocket if a chain driven motor facing each other. This would be #4 compression/firing. But when you put the mark on top, since the pulleys are relatively far apart using this method is difficult, so a mark was placed topside to facilitate set up. In order to do this the motor had to be turned another 180 degrees to put the cam mark at the top, hence the motor sets up on #1 compression/firing. I haven't ever seen a bentley manual so I don't know what they are talking about with 11 o'clock and such. The marks make a straight run down the center line of the motor.

So I guess the short answer to your question is, "yes."

Bob

The compression stroke and the exhaust stroke are identical as far as the crankshaft is concerned, so long as you line up the rotor in the distributor correctly you'll be fine.