2290107
hot street - dirt track
Renault F4R.874 Mégane III 250hp
I-4cyl 2.0L 16v DOHC (RPRH/RPRH)
intake
exhaust
camshaft data:
lash ramp
: hydro
hydro
duration @ 0.1mm
: 266°
256°
duration @ 1.0mm
: 238°
230°
valve lift
: 10.45mm
10.00mm
cam lift
:
lobe angle
: 112°
112°
timing @ 1.0mm
: 7° / 51°
47° / 3°
valve lift @ TDC
: 1.80mm
1.35mm
parts setup:
cam wheels :
:
:
follower
:
:
valve lash
:
:
valve
:
:
valve locks
:
:
upper retainer
:
:
lower retainer
:
:
exterior spring
: View PAC-S90015
: View PAC-S90015
interior spring
fitted load / length
: 33kg @ 37.0mm
: 33kg @ 37.0mm
max. load / lift
: 79kg @ 12.0mm
: 79kg @ 12.0mm
REMARKS :
REMARKS :
#
for 1st generation engines with hydraulic tappets, single groove valves and cylindrical valve springs (until '97)
#
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
#
massflow or throttle position sensor required for reprogramming, MAP sensor will not funtion properly