1030410
hot street - dirt track
Alfa Romeo AR 301.68 105hp
B-4cyl 1.4L 8v SOHC (DT/DT)
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intake
exhaust
camshaft data:
lash ramp
: 0.20mm
0.20mm
duration @ 0.1mm
: 291°
283°
duration @ 1.0mm
: 254°
246°
valve lift
: 10.75mm
10.00mm
cam lift
:
lobe angle
: 108°
108°
timing @ 1.0mm
: 19° / 55°
51° / 15°
valve lift @ TDC
: 3.30mm
2.75mm
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-I92009
: View PAC-I92009
fitted load / length
: 38kg @ 33.8mm
: 42kg @ 32.8mm
max. load / lift
: 110kg @ 14.0mm
: 110kg @ 13.0mm
REMARKS :
REMARKS :
#
- steel billet camshafts
- small bearing dimensions: 34.94 - 46.44 - 46.94mm
- cam followers: mechanic bucket tappet with shim
- camshafts can also be used in older engines with twin cam lobes (cam follower conversion required)
#
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 dirt track applications and pro street use with adjustable engine management or carburettors