Timing

[QWK32]

but i have had it at 30 and 40 and it runs ok?

really in all the fiddling i have lost the original setting having moved the cas to all sort of positions

maybe it should be 30 and ive made it go to 15?

like you say, maybe your car was set right 15deg (or 30deg with the timing light not double wrapped) and you retarded it back too far so as to get a reading of 15 (or as it would be now 7 ). how is you car running at the new setting?

[cosworth1971]

meh... all i know it works but it also works on 30 deg and feel zippy without hearing pinging?

Im reading about waste spark ignitions right now that do that double reading.but as yet i cant prove a skyline is a waste spark ignition car?

Question: My brother is doing a car mechanics course and needs to find out what a Waste Spark is.

Answer: A waste spark is the spark that occurs 360° from the “normal” spark that fires the fuel mixture. Remember the “normal” spark occurs every 720° (2 turns of the crank shaft).

[heller44]

No go on mine, still reading double. Waiting now until I have access to all my tools and going to throw a lead on the no1 plug and just clamp it on there, tomorrow.

[_x_FiReStOrM_x_]

i did have to tighten the distributor belt

Yeah common problem, belt driven distributors are no good.