Make:HONDA                       ROCKER RATIO 1.5:1

Model:CS XL XR                  75cc – 125cc
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.

  

361

67

32

33

64

279

277

    

0.380”

0.380”

    

0.006”

0.004”

1st Imp.

385

70

30

37

72

280

289

    

0.410”

0.400”

    

0.006”

0.004”

  

1269

                

0.410”

0.420”

    

0.006’

0.004”

Morowaki

419

66

33

38

66

279

284

    

0.430”

0.430”

    

0.006”

0.004”

  

334

74

38

42

70

292

292

    

0.410”

0.430”

    

0.006”

0.004”

  

356B

78

39

47

70

297

297

    

0.435”

0.435”

    

0.006”

0.004”

  

549

75

39

43

71

294

294

    

0.460”

0.472”

    

0.006”

0.004”

  

356

78

39

47

70

297

297

    

0.435”

0.485”

    

0.006”

0.004’

Road race

927

76

44

44

76

300

300

    

0.465”

0.465”

    

0.006”

0.004”

Road race

Notes:                       -Profiles to suit XL & XR,75-80-100-125cc.

                                    -New camshafts available on some models.

                                    -Modified valve springs recommended on all improvements.