1030523
hot street - dirt track
Alfa Romeo AR 672.01, ... Twin Spark
I-4cyl 2.0L 8v DOHC (DT/DT)
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intake
exhaust
camshaft data:
lash ramp
: 0.25mm
0.25mm
duration @ 0.1mm
: 288°
288°
duration @ 1.0mm
: 253°
253°
valve lift
: 12.10mm
12.10mm
cam lift
:
lobe angle
: 108°
108°
timing @ 1.0mm
: 19° / 54°
55° / 18°
valve lift @ TDC
: 3.60mm
3.55mm
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-E15009
: View PAC-E15009
interior spring
: View PAC-I15009
: View PAC-I15009
fitted load / length
: 30kg @ 36.0mm
: 38kg @ 34.5mm
max. load / lift
: 111kg @ 15.0mm
: 111kg @ 13.5mm
REMARKS :
REMARKS :
#
IMPORTANT: 3 types of intake camshafts are available:
1/ 10305xx: vanos with 1 oil hole in the front bearing, oil groove in the middle of the bearing
2/ 10325xx: vanos with 2 oil holes in the front bearing, oil groove at the end of the bearing
3/ 10335xx: for use without vanos (like exhaust camshaft)
Please indicate the type of intake camshaft you need when ordering and use the correct partnumber digits, corresponding with the correct type of camshaft. All camshafts are steel billet and gundrilled for weight reduction
#
- valve clearance is to be adjusted using mechanical lash caps
-
please make sure that the lash cap does not touch the valve locks !
#
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