pkmh
Jedi Warrior
Offline
Hi All!
Simple technical question and if anyone dares to answer, I would appreciate it or any input on the topic of timing!
From various sources, the "Strobscapic" setting for the ignition timing of a BJ8 is listed as 15 degrees BTDC at an idle speed of 600 RPM's. This info is listed from the BMC Handbook.
Another source is close by saying it's 16 degrees.
Now before I go any further, I am using the above data to establish the engine timing by advancing the distributor as needed while using a timing gun. So if the data or language I am using above is misleading then please advise so as to not confuse the issue here.
But assuming I am making sense so far, then the one degree difference is not so much of a concern to me (or should it be?), but rather what I am curious to know is, when using a strobe or timing gun on the one and only "notch" or mark on the pulley, if that notch is about a half inch away from the fixed point (zero degree mark), what do you suppose that measures in degrees, given a 1/2" away?
Or would one want to take a guess what the distance the pulley mark should be, measured in inches or fractions thereof?
BTW, even if I wanted to further advance the timing closer to the "zero" mark, I cannot for the vacuum advance unit attached to the distributor bumps into the oil filter support bracket adjacent, leading me to believe I'm possibly over adjusting.
Please let me know what you all think about this or ideas on the subject.
Much appreciated!
Paul
Simple technical question and if anyone dares to answer, I would appreciate it or any input on the topic of timing!
From various sources, the "Strobscapic" setting for the ignition timing of a BJ8 is listed as 15 degrees BTDC at an idle speed of 600 RPM's. This info is listed from the BMC Handbook.
Another source is close by saying it's 16 degrees.
Now before I go any further, I am using the above data to establish the engine timing by advancing the distributor as needed while using a timing gun. So if the data or language I am using above is misleading then please advise so as to not confuse the issue here.
But assuming I am making sense so far, then the one degree difference is not so much of a concern to me (or should it be?), but rather what I am curious to know is, when using a strobe or timing gun on the one and only "notch" or mark on the pulley, if that notch is about a half inch away from the fixed point (zero degree mark), what do you suppose that measures in degrees, given a 1/2" away?
Or would one want to take a guess what the distance the pulley mark should be, measured in inches or fractions thereof?
BTW, even if I wanted to further advance the timing closer to the "zero" mark, I cannot for the vacuum advance unit attached to the distributor bumps into the oil filter support bracket adjacent, leading me to believe I'm possibly over adjusting.
Please let me know what you all think about this or ideas on the subject.
Much appreciated!
Paul