Camshaft Comparo
From Datsun 1200 Wiki
Here are the specs used in the B110 camshafts
- A12 specs from 1973 USA factory manual (same cam is used in JDM)
- A12GX specs from
- A10 (B10) specs from here (http://datsun1200.com/modules/newbb/viewtopic.php?topic_id=32995&forum=1)
| Cam: | A10 (B10) | A12 | A12GX |
| Part: | 13001-18000 | 13001-H1000 | 13001-H2300 |
| HP: | 62hp@6000rpm | 69hp@6000rpm | 83hp@6800rpm |
| Torque: | 61.5 lb-ft | 10.0kg-m@4,400rpm | 9.7kg-m@3,600rpm |
| Exhaust open duration: | 240° | 248° | 256° |
| Intake open duration: | 240° | 248° | 256° |
| Intake opens at: | 12° | 14° BTDC | 20° BTDC |
| Intake closes at: | 48° | 54° ABDC | 56° ABDC |
| Exhaust opens at: | 50° | 56° BBDC | 58° BBDC |
| Exhaust closes at: | 10° | 12° ATDC | 18° ATDC |
| Lift: | ? | 8mm | 8.4mm |
NOTE: It is unclear at which valve lift specifications this is measured at. So be wary of comparing other camshaft specs.
- B = before
- A = after
- TDC = Top Dead Center
