4901551
tarmac rally - race
Citroën XU9J4 (D6C) 158hp
I-4cyl 1.9L 16v DOHC (DTH/DTH)
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intake
exhaust
camshaft data:
lash ramp
: 0.20mm
0.20mm
duration @ 0.1mm
: 290°
282°
duration @ 1.0mm
: 252°
244°
valve lift
: 12.00mm
11.50mm
cam lift
:
lobe angle
: 108°
108°
timing @ 1.0mm
: 18° / 54°
50° / 14°
valve lift @ TDC
: 3.50mm
2.90mm
parts setup:
cam wheels :
: View CTPE007
: View CTPE007
follower
: View CC003
: View CC003
valve lash
: View TS102
: View TS102
valve
: O.E.M.
: O.E.M.
valve locks
: O.E.M.
: O.E.M.
upper retainer
: View 99333
: View 99333
lower retainer
: O.E.M.
: O.E.M.
exterior spring
: View PAC-S10011
: View PAC-S10011
interior spring
fitted load / length
: 40kg @ 37.0mm
: 40kg @ 37.0mm
max. load / lift
: 105kg @ 13.0mm
: 105kg @ 13.0mm
REMARKS :
#
Inlet Valves:
#
View9249012 d7.00 // D34.6 // L106.4
#
Exhaust Valves:
#
View9249013 d7.00 // D29.6 // L105.7
#
REMARKS :
#
- steel billet camshafts
#
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 !
#
machining of cylinder head can be required at camlobes
#
ONLY for use in competition engines with independent engine management (throttle position sensor) or carburettors