1030322
hot street - dirt track
Alfa Romeo AR 67.301
V-6cyl 2.5L 12v SOHC (DT/FT)
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intake
exhaust
camshaft data:
lash ramp
: 0.20mm
0.35mm
duration @ 0.1mm
: 290°
298°
duration @ 1.0mm
: 252°
246°
valve lift
: 12.00mm
10.55mm
cam lift
:
7.50mm
lobe angle
: 106°
106°
timing @ 1.0mm
: 20° / 52°
49° / 17°
valve lift @ TDC
: 3.75mm
3.20mm
parts setup:
cam wheels :
:
:
follower
: O.E.M.
: O.E.M.
valve lash
: O.E.M.
: O.E.M.
valve
: O.E.M.
: O.E.M.
valve locks
: O.E.M.
: O.E.M.
upper retainer
: O.E.M.
: O.E.M.
lower retainer
: O.E.M.
: O.E.M.
exterior spring
: View PAC-E95009
: View PAC-E95009
interior spring
: View PAC-I95009
: View PAC-I95009
fitted load / length
: 36kg @ 34.0mm
: 36kg @ 34.0mm
max. load / lift
: 101kg @ 12.0mm
: 101kg @ 12.0mm
REMARKS :
#
Remove the extra shim of 1mm from the lower retainer.
REMARKS :
#
GTV: all data are measured on the valve and assume fixed rocker ratio of 1.4 on exhaust
#
FOR COMPETITION APPLICATIONS ONLY. Following details must be verified:
-
the camshafs must turn smooth in the cylinderhead, provide free travel by machining where needed
-
distance between valve seal and retainer at full lift must be 0.6mm at least
-
minimum valve spring travel of 1.0mm at full lift must be provided
-
distance between valve and piston 1.0mm (pref. 1.5mm). check 5-15° before TDC on exhaust, and after TDC on intake
#
ONLY for use in competition engines with independent engine management (throttle position sensor) or carburettors