1030411
hot street - dirt track
Alfa Romeo
B-4cyl 1.7L 8v SOHC (DT/DT)
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intake
exhaust
camshaft data:
lash ramp
: 0.15mm
0.15mm
duration @ 0.1mm
: 294°
282°
duration @ 1.0mm
: 258°
246°
valve lift
: 11.25mm
10.75mm
cam lift
:
lobe angle
: 106°
106°
timing @ 1.0mm
: 23° / 55°
49° / 17°
valve lift @ TDC
: 3.80mm
3.00mm
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 (used in early 1.7L engines, replaced by hydraulic lash adjustment afterwards)
#
Distance between valve and piston should be 1.0mm at least:
-
check 5-15° after TDC on intake
-
check 5-15° before TDC on exhaust
Machine pistons if required. Wrong installation can cause severe engine damage!
#
adjusted carburettor settings required