2280712
tarmac rally - race
Ford DH23
I-4cyl 2.3L 16v DOHC (DTH/DTH)
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intake
exhaust
camshaft data:
lash ramp
: 0.25mm
0.25mm
duration @ 0.1mm
: 292°
285°
duration @ 1.0mm
: 259°
251°
valve lift
: 13.00mm
12.50mm
cam lift
:
lobe angle
: 105°
105°
timing @ 1.0mm
: 25° / 54°
51° / 20°
valve lift @ TDC
: 4.30mm
3.80mm
parts setup:
cam wheels :
: View TFO002
: View TFO002
follower
: View CC017
: View CC017
valve lash
: View TS102
: View TS102
valve
: O.E.M.
: O.E.M.
valve locks
: O.E.M.
: O.E.M.
upper retainer
: 99456/s
: 99456/s
lower retainer
: not available
: not available
exterior spring
: View PAC-E19862
: View PAC-E19862
interior spring
: View PAC-I19862
: View PAC-I19862
fitted load / length
: 29kg @ 37.0mm
: 29kg @ 37.0mm
max. load / lift
: 106kg @ 13.0mm
: 106kg @ 13.0mm
REMARKS :
#
if required, machine cylinder head and / or use solid shims to adjust spring load
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
#
- valve clearance is to be adjusted using mechanical lash caps
-
please make sure that the lash cap does not touch the valve locks !
#
ONLY for use in competition engines with independent engine management (throttle position sensor) or carburettors