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This is for the technical gurus out there. I am just trying to make sure I set the motor up for the best performance.
The distributors, DM2 and 25D, can have different advance built into the main shaft. I have shafts with 8, 9, and 13 degrees of distributor advance. This is times 2 for the engine advance.
I want to have 30 degrees of engine advance for my 1275 engine. My race engines on the dyno always liked 32 degree BTDC.
However, I was using crank fire ignition set up for WOT so I was not concerned about low RPM operation.
With the 9 degree distributor (18 degree total engine advance) I would set the static advance at 12 degree BTDC.
With the 13 degree distributor shaft, 25 degree total engine advance) I would set the static advance at 4 degree BTDC.
The final 30 degree at 2500 plus rpm would be by timing light.
The question is which is the correct advance for the 1275 (both will work) and second which static setting is the best for starting the engine?
Anyone's thoughts are welcome.
Thanks in advance
The distributors, DM2 and 25D, can have different advance built into the main shaft. I have shafts with 8, 9, and 13 degrees of distributor advance. This is times 2 for the engine advance.
I want to have 30 degrees of engine advance for my 1275 engine. My race engines on the dyno always liked 32 degree BTDC.
However, I was using crank fire ignition set up for WOT so I was not concerned about low RPM operation.
With the 9 degree distributor (18 degree total engine advance) I would set the static advance at 12 degree BTDC.
With the 13 degree distributor shaft, 25 degree total engine advance) I would set the static advance at 4 degree BTDC.
The final 30 degree at 2500 plus rpm would be by timing light.
The question is which is the correct advance for the 1275 (both will work) and second which static setting is the best for starting the engine?
Anyone's thoughts are welcome.
Thanks in advance
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