Engine timing (strobe light)
Ok, I want to use a timing light to set my ignition timing today.
I have a strobe light gun, and know how to hook it up now. I have read in my manual that on my '79 there are two timing specs. One taken with the vacuum hose connected and the engine @950rpm. The spec is 5 deg (+/- 2 deg.) BTDC. And a second spec for the engine speed @6000rpm and vacuum hose disconnected. 26deg. (+/-2 deg).
First off...what is BTDC?
Can someone give me a quick rundown of what I am shooting for here? I understand that I want a mark to line up with the crankcase and the strobe will alluminate when the #1 cylinder is fired.
What I am unsure of is this 5 deg. stuff.
And do I even perform the second spec. (engine @6000rpm) ? I was under the impression that revving the engine that high isn't good until it is good and broken in.
thanks, leland
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