If #1 is rocking, and you time the spark plug to fire that cylinder, it will never run! The whole idea behind finding which cylinder is on overlap is so you can fire the OTHER cylinder. If you insist on using #1 to find when the valves overlap, you need to time the distributor to fire #6. Got the idea now?
Jerry

Edit: The timing marks will align when either #1 or #6 is on conpression, since both pistons are at the top at the same time. Companion cylinder timing eliminates the need to turn the engine fast enough to feel for compression, and possibly going so far past TDC that you have to guess at the timing. It's worked for me for over 40 years, and I can't remember the last time I got confused and timed one wrong.
Jerry


Last edited by Hotrod Lincoln; 11/22/2008 5:05 AM.
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