7105148
hot street - dirt track
Toyota 4A-GE
I-4cyl 1.6L 16v DOHC (DTs/DTs)
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intake
exhaust
camshaft data:
lash ramp
: 0.20mm
0.20mm
duration @ 0.1mm
: 268°
260°
duration @ 1.0mm
: 238°
230°
valve lift
: 10.70mm
10.25mm
cam lift
:
lobe angle
: 108°
108°
timing @ 1.0mm
: 11° / 47°
43° / 7°
valve lift @ TDC
: 2.45mm
2.00mm
parts setup:
cam wheels :
: View CTTO018
: View CTTO018
follower
: View CC020
: View CC020
valve lash
: N/A
: N/A
valve
: O.E.M.
: O.E.M.
valve locks
: O.E.M.
: O.E.M.
upper retainer
: View 99373/s
: View 99373/s
lower retainer
: remove
: remove
exterior spring
: View PAC-E99862
: View PAC-E99862
interior spring
fitted load / length
: 33kg @ 34.0mm
: 37kg @ 33.0mm
max. load / lift
: 87kg @ 12.5mm
: 87kg @ 11.5mm
REMARKS :
#
STD followers MUST be replaced by race followers [ref. CC020] with effective contact area of 28mm
#
followers [ref. CC020] can only be used with retainers [ref. 99373] (lash adjustment shim centered in retainer, see picture)
REMARKS :
#
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