5500228
tarmac rally - race
Renault 840.725 Alpine (R-1223)
I-4cyl 1.4L 8v OHV (FT/FT)
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intake
exhaust
camshaft data:
lash ramp
: 0.40mm
0.40mm
duration @ 0.1mm
: 301°
301°
duration @ 1.0mm
: 258°
258°
valve lift
: 11.20mm
11.20mm
cam lift
: 7.00mm
7.00mm
lobe angle
: 106°
106°
timing @ 1.0mm
: 23° / 55°
55° / 23°
valve lift @ TDC
: 4.00mm
4.00mm
parts setup:
cam wheels :
: View TRE012
: View TRE012
follower
: O.E.M.
: O.E.M.
valve lash
: O.E.M.
: O.E.M.
valve
: O.E.M.
: O.E.M.
valve locks
: O.E.M.
: O.E.M.
upper retainer
: O.E.M.
: O.E.M.
lower retainer
: O.E.M.
: O.E.M.
exterior spring
: View PAC-E99859
: View PAC-E99859
interior spring
: View PAC-I99859
: View PAC-I99859
fitted load / length
: 34kg @ 37.3mm
: 39kg @ 36.3mm
max. load / lift
: 103kg @ 13.0mm
: 103kg @ 12.0mm
REMARKS :
#
check distance between valve seal and retainer to be at least 0.6mm at full lift
REMARKS :
#
- cam lobe sequence: EI-EI-EI-EI (crossflow head)
- total length: 455mm (with water pump drive)
- double chain
- journal diameters: 37.94 - 37.94 - 37.94 - 34.48mm
- available in steel billet only
#
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