Triumph Daytona 675 User Manual page 10

NOTE
• The standard inlet cam is 9.25 mm max lift and 258.50
inlet cam is 9.25 mm max lift and 268.74
• The standard exhaust cam is 8.5 mm max lift and 246
exhaust cam is 8.5 mm max lift and 262.21
• The race kit valve spring must be used in conjunction with the standard
spring platforms and retainers. The fitted length of the race springs is the
same as the standard spring.
1. The race kit valve springs should be
assembled in the same manner as the
standard valve springs. Follow the
procedure detailed in section 3 of the
Daytona 675 service manual. Ensure
the springs are installed with the close
wound, colour coded end of the springs
facing downwards, towards the piston.
2. The race kit camshafts should be
assembled in the same manner as the
standard camshafts.
procedure detailed in section 3 of the
Daytona 675 service manual.
3. The race kit cam sprockets should be
mounted and secured to the camshafts
using the slotted holes in the sprocket.
The slotted holes allow adjustment of
the valve timing. The circular holes in
the sprockets are for Triumph service
tool T3880102 and should not be used
to mount the
camshafts.
NOTE
• No timing marks are included on
the race sprockets. Race engines
will typically have different depths
skimmed off the cylinder head and,
therefore
individual timing.
4. The camshafts should be timed using
cam degreeing
typically consists of a degree wheel,
pointer, dial indicator and piston stop.
Optimum cam timing will depend on the
exact specification of the engine, but a
recommended starting point is 104
IMOP (Inlet Maximum Opening Point)
o
and 104 EMOP (Exhaust Maximum
Opening Point).
© Triumph Designs Ltd 2008.
Follow the
sprockets to the
require specific
equipment which
Page 10 of 33
o
duration.
o
duration.
5. Always check the inlet and exhaust
piston to valve clearance for the timing
selected to use, before running the
engine. You
clearances are adequate. As a guide,
the standard nominal piston to valve
clearance is 1.3 mm inlet & 1.5 mm
exhaust.
6. When the desired timing has been set
the new
provided
15 Nm. Note,
released
ThreeBond 1305 to the threads before
re-tightening.
o
o
duration. The race kit
o
duration. The race kit
must ensure
socket retaining
should be tightened
if the screws
for any reason,
both
screws
to
are
apply