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| Profile Number |
Advertised
Timings |
DURATION |
VALVE
LIFT |
TAPPET CLEARANCE |
REMARKS |
||||||||||
| Ex
Op. B.B.D.C. |
Ex
Cl A.T.D.C |
In
Op. B.T.D.C. |
In
Cl A.B.D.C |
Advertised |
@
0.050" |
Gross. |
@
T.D.C. |
Ex. |
In. |
|
|||||
| 733 | 70 | 34 | 34 | 70 | 284 | 284 | 0.360" | 0.360" | 0.008" | 0.006" | STD | ||||
| 506 | 74 | 38 | 38 | 74 | 292 | 292 | 0.370" | 0.370" | 0.008" | 0.006" | Mild | ||||
| 809 | 73 | 37 | 37 | 73 | 290 | 290 | 0.375" | 0.375" | 0.008" | 0.006" | |||||
| 502 | 76 | 38 | 41 | 73 | 294 | 294 | 0.430" | 0.425" | 0.008" | 0.006" | Trail | ||||
| 503 | 86 | 36 | 44 | 76 | 302 | 300 | 0.460" | 0.460" | 0.008" | 0.006" | Requires Diff Carbs | ||||
| 323 | 70 | 50 | 46 | 76 | 300 | 300 | 0.455" | 0.455" | 0.012" | 0.010" | |||||
| 486C | 82 | 52 | 52 | 82 | 314 | 314 | 0.465" | 0.465" | 0.012" | 0.010" | |||||
Notes -
* Profiles to suit XT, TT and XS Twin engines.
* Valve springs required on larger profiles.
* Carbs, require changing on larger profiles due to low vaccum.
