Porsche 912 E - Page 93

Ignition
28
CHECKING DISTRIBUTOR IGNITION CURVES ON DISTRIBUTOR TEST STAND
Read ignition angles at various speeds and vacuum values, and compare data with ignition curves. The
measurements must be within both lines.
Centrifugal Advance Curve for Distributor
BTDC
Bosch 0 231176 060
20°
r-
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0
500
1 000 1500 2000
2500
3000
3500
Distributor Shaft Speed (rpm) ____________ ___.
Printed in Germany
Centrifugal Advance Curve
28
.- 5