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, Mon, 29 Dec 2003 20:01:35
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This is a 10 minute job, don't be intimidated by this detailed explanation.
First, you must have an inductive timing light, i.e. one that has a "clamp" that goes over the number 1 spark plug wire and does not connect in-line with the wire like the old time lights. The timeing light should alos have a battery hook up so the light is powered for extra brightness. Nearly all current timing lights work this way. You can get one at any parts store or sears. A light with dial in advance is nice to have but not necessary.
Once you have you light, hook it up to the battery and put the clamp over the number 1 wire, which goes to the spark plug closest to the firewall. Then unhook the vacuum line at the distributor and plug the line with a special tool...golf tee works well. Next loosen, but do not remove the bolt that holds the bottom of the distributor into the head. Loosen it enough so the head of the distributor can be rotated with some resistance, but not sloppy.
Then put your car in 5th gear with the engine off and push it forward until the timing scribes are visible through the timing opening in the top of the plastic clutch cover(not the round hole in the plastic cover). You can find this opening by looking down through the hoses ahead of the AIC(idle valve). There is a line scribed into the plastic cover that you should clean off with brake cleaner or any solvent. Dry the area with a rag and paint some white-out on the line. Also clean the edge of the flywheel and highlight the line at 16 btdc with white out. You will see lines scribed at 1 degree intervals with a longer line every 5 degrees. The five degree divisions are marked with 0, 5, 10, 15, 20. The numbers are hard to see but if you have cleaned off the flywheel edge and use a flashlight or shop light you will see them. Mark the line one past the 15 degree line with the white-out. Chalk also works, but white-out will be more permanent and easier for the light to pick out, provided you have cleaned the surface prior to marking the line.
Now start the engine and let the idle settle down to about 800-900 rpm on the tach. Go over the passenger side and pull the trigger on the light and point the flashing strobe light at the timing opening on the clutch cover. Turn the distributor either way until the line on the flywheel is directly opposite the line on the plastic cover. Then tighten down the bolt holding the base of the distibutor and you have set base timing.
Now, hook up the distributor vac/pressure hose. With the light pointing at the marks rev the engine a bit by twisting the throttle control on the side of the intake and you should see the timing light mark on the flywheel momentarily jump past 20 degrees, indicating that the vacuum advance is working. The "A" student would use a mity-vac on this connection to measure the advance at various levels of vacuum and also the retard when you hook the pressure side of the mtiy vac up to the distributor hose, but usually this distirbutor advance control either is working or not. Do a search on the performance board for tons of info on tweaking the advance to increase retard under high boost. Methods go from bending the retard stop on distributor control module to MSD systems.
posted by 208.208.152...
, Mon, 29 Dec 2003 20:01:35, Tue, 30 Dec 2003 17:19:24
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