| try this which is lifted from the moto-one website in australia - tones of great info - the table of valve specs has not come up right but if you do a search you will find it.
Testastretta:
CAM
PAIRING
INLET
OPEN
INLET
CL
EXH
OPEN
EXH
CL
DURATION
CENTRELINE
MAX LIFT
STD VALVES
IN
EXH
INLET
EXH
IN
EXH
INLET
EXH
749
15
46
53
11
241
244
105.5
111
10.1
9.1
37
30.5
749S '04
23
55
62
24
258
266
106
109
11.4
10.21
38
30.5
REVISED
21
57
66
20
258
266
108
113
11.4
10.21
749R
21
53
60
20
254
260
106
110
13
11.5
39.5
32
998
4
56
53
11
240
244
116
111
10.15
9.1
40
33
998S
16
60
60
18
256
258
112
111
11.71
10.13
40
33
REVISED refers to the revised cam timing specs for 749S 04 models as detailed in service information re: stalling at idle. Simply changing the centreline settings for the cams to reduce overlap. It amazes me that such a small change in timing can have such a pronounced effect on how the bikes idle (probably part of the reason why my 851 idles so badly).
These 04 749S cams are the longest duration of any of the Testastretta cams.
998 refers to base model 998 and 999. Not the 05 999 though afaik.
998S refers to the Euro spec 998S. The USA spec 998S has the base model 998 engine. These cams are also fitted to the 996R, 998R, 999S (both Euro and USA) and the 03 999R. Not sure about the 05 999R yet. The 05 999 has these cams I believe.
The 749 and 749S share the same valve spacing, which is different to the 998/999 valve spacing. I believe the 05 999R may also have unique valve spacing, as does the 749R. Therefore the cams do not swap.  |