4913552
tarmac rally - race
Citroën XU10J4 (RFY) 150hp
I-4cyl 2.0L 16v DOHC (DTH/DTH)
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intake
exhaust
camshaft data:
lash ramp
: 0.20mm
0.20mm
duration @ 0.1mm
: 298°
290°
duration @ 1.0mm
: 260°
252°
valve lift
: 12.50mm
12.00mm
cam lift
:
lobe angle
: 106°
106°
timing @ 1.0mm
: 24° / 56°
52° / 20°
valve lift @ TDC
: 4.30mm
3.75mm
parts setup:
cam wheels :
:
:
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 :
REMARKS :
#
The exhaust camshafts have a sleeve and internal oil supply to fit the servo pump (direct drive)
#
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