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Make:HONDA ROCKER RATIO 1.36:1 Model:CS XR 250 R.F.V.C |
| 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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657 |
40 |
10 |
10 |
40 |
230 |
230 |
0.340 |
0.340 |
0.004 |
0.002 |
Standard 250cc |
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334 |
50 |
10 |
12 |
43 |
240 |
240 |
0.375 |
0.390 |
0.006 |
0.004 |
Mild |
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385 |
57 |
17 |
19 |
55 |
254 |
254 |
0.360 |
0.370 |
0.006 |
0.004 |
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757 |
53 |
27 |
26 |
62 |
260 |
268 |
0.370 |
0.370 |
0.006 |
0.004 |
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399 |
68 |
27 |
32 |
62 |
275 |
275 |
0.375 |
0.375 |
0.006 |
0.004 |
Desert |
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535B |
73 |
37 |
40 |
70 |
290 |
290 |
0.400 |
0.400 |
0.006 |
0.004 |
Short circuit. |
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Notes: -New camshafts available.
-Profiles also used in the XL,XLX and 200cc-350cc engines.
-Performance increases are not as substantial in the XL engines.
-Valve timings at 1mm valve lift.
-Hardfaced rockers are recommended with hardfaced camshafts.