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


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.

 

663

64

32

68

28

276

276

   

0.420

0.420

   

0.008

0.006

Standard XT 250cc

506

80

32

44

68

292

292

   

0.370

0.370

   

0.008

0.006

Standard XT 500cc

755

78

40

45

73

298

298

   

0.420

0.400

   

0.008

0.006

1st Imp. 250cc

577

66

39

41

64

285

285

   

0.450

0.450

   

0.010

0.008

2nd

Imp.250cc

503

86

36

44

76

302

300

   

0.460

0.460

   

0.010

0.008

Mild road 500cc

323

70

50

46

76

300

300

   

0.455

0.455

   

0.012

0.010

 

468C

82

52

52

82

314

314

   

0.465

0.465

   

0.012

0.010

Road race.

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.