INSTALLATION INFORMATION
ENGINE: Honda CB750F2 (75-78); CB750K
(69-78) SOHC 8v
|
INTAKE |
EXHAUST |
VALVE LASH (INCH): |
.004" |
.005" |
VALVE LIFT (INCH): |
0.420 |
0.430 |
DURATION: |
258.5° |
261° |
LOBE CENTER: |
109.75° |
115.5° |
INTAKE OPENS
19.5° BEFORE TDC |
EXHAUST OPENS
66° BEFORE BDC |
INTAKE CLOSES
59° AFTER BDC |
EXHAUST CLOSES
15° AFTER TDC |
VALVE TIMING IS CHECKED WITH ZERO VALVE LASH @ 0.050
INCHES OF VALVE LIFT.
MAKE |
Honda CB750 SOHC |
MODEL |
K model |
YEAR |
69-78 (69-76 K model valves) |
CAMSHAFT |
CX-10 |
INTAKE VALVE SIZE |
32mm standard. |
EXHAUST VALVE SIZE |
28mm standard. |
LASH |
0 lash for checking. |
INTAKE SINK |
No sink. 1.700 valve stem protrusion. |
EXHAUST SINK |
No sink. 1.700 valve stem protrusion. |
VALVE TO VALVE CLEARANCE |
.051 Average |
SPRINGS |
ENV-008. 65lbs 1.455 installed height. no shims. |
INSTALLED HEIGHT |
Check above. |
VALVE STEM PROTRUSION |
1.700. Intake and exhaust. |
VALVE GUIDES |
High lift guides are needed with the CX-10 |
NOTES: |
MAKE |
Honda CB750 SOHC |
MODEL |
F2/ F3 Supersport models |
YEAR |
77-78 |
CAMSHAFT |
CX-10 |
INTAKE VALVE SIZE |
34mm standard |
EXHAUST VALVE SIZE |
31mm standard. |
LASH |
0 lash for checking. |
INTAKE SINK |
.030 |
EXHAUST SINK |
.030 |
VALVE TO VALVE CLEARANCE |
|
SPRINGS |
|
INSTALLED HEIGHT |
|
VALVE STEM PROTRUSION |
1.730. Intake and exhaust. (sunk .030) |
VALVE GUIDES |
High lift guides are required. |
NOTES: |