Spark Curve Comparison

Revision as of 08:03, 15 November 2012; view current revision
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NOTE: If your distributor is on the low side of the tolerance it can be 4 degrees retarded and still be in specification!

Overview

A12 advance Tolerance - why using stock timing setting is not enough

A12 Total advance Comparo

A12 Total advance Comparo (blueprinted)

Stock A12 curves blueprinted to high side of tolerance

Non-emission Type

A12 EXHAUST SPEC D412-63 22100-H1901

1973 USA Manual Transmission D412-80

1973 USA Auto Transmission D412-89

Other Datsun Engines

L-series comparison

P engine OHV L6 4.0-liter D608-03 22100-46500 (Patrol)

R16 OHV D417-57 22100-14700, D417-57K 22100-14705

R16 OHV D407-51 22100-14600, D407-51K 22100-14606

U20 OHC D407-52 22100-25000, D407-52K 22100-25506

L16 OHC D412-64 22100-A5502

R16 OHV D417-61 22100-A7701

L24 22100-E4601 D612-52

L24 22100-E8000 D614-52 2800 RPM