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


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.

 

657

40

10

10

40

230

230

   

0.340

0.340

   

0.004

0.002

Standard 250cc

334

50

10

12

43

240

240

   

0.375

0.390

   

0.006

0.004

Mild

385

57

17

19

55

254

254

   

0.360

0.370

   

0.006

0.004

 

757

53

27

26

62

260

268

   

0.370

0.370

   

0.006

0.004

 

399

68

27

32

62

275

275

   

0.375

0.375

   

0.006

0.004

Desert

535B

73

37

40

70

290

290

   

0.400

0.400

   

0.006

0.004

Short circuit.

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.