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Make:YAMAHA ROCKER RATIO 1.3:1 Model:CS XT 2 VALVE |
| Ivan Tighe Engineering
Pty Ltd Tel (07) 3271 6001 Fax (07) 3271 6005 Email: sales@tighecams.com.au |
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Profile |
Advertised Timings |
DURATION |
VALVE LIFT |
TAPPET |
REMARKS |
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Ex Op. |
Ex Cl |
In Op. |
In Cl |
Advertised |
@ 0.050 |
Gross. |
@ T.D.C. |
Ex. |
In. |
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663 |
64 |
32 |
68 |
28 |
276 |
276 |
0.420 |
0.420 |
0.008 |
0.006 |
Standard XT 250cc |
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506 |
80 |
32 |
44 |
68 |
292 |
292 |
0.370 |
0.370 |
0.008 |
0.006 |
Standard XT 500cc |
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755 |
78 |
40 |
45 |
73 |
298 |
298 |
0.420 |
0.400 |
0.008 |
0.006 |
1st Imp. 250cc |
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577 |
66 |
39 |
41 |
64 |
285 |
285 |
0.450 |
0.450 |
0.010 |
0.008 |
2nd Imp.250cc |
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503 |
86 |
36 |
44 |
76 |
302 |
300 |
0.460 |
0.460 |
0.010 |
0.008 |
Mild road 500cc |
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323 |
70 |
50 |
46 |
76 |
300 |
300 |
0.455 |
0.455 |
0.012 |
0.010 |
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468C |
82 |
52 |
52 |
82 |
314 |
314 |
0.465 |
0.465 |
0.012 |
0.010 |
Road race. |
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Notes: -Some profiles can be used on the SR & XT engines.
-Hardfaced camshaft only available.
-Profiles also suitable for the XV 750& XV 1000 engines.