Make:HONDA                       ROCKER RATIO 1.5:1

Model:CS XL XR                  185cc – 200cc
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.

  

588

40

10

10

40

230

230

    

0.412”

0.385”

    

0.006”

0.004”

Standard @ 1mm valve lift

399

79

45

50

70

300

300

    

0.412”

0.412”

    

0.006”

0.004”

  

356

78

39

47

70

297

297

    

0.435’

0.485

    

0.006”

0.004”

Road race

356S

75

42

47

70

297

297

    

0.435”

0.485”

    

0.006”

0.004”

  

927

76

44

44

76

300

300

    

0.465”

0.465”

    

0.006”

0.004”

Road race

Notes:                         -New camshafts available for some models.

                                    -Valve springs recommended for all improvements.

                                    -Late model 125cc engines use the 200cc cylinder head.