5500530
tarmac rally - race
Renault 807.20 Alpine A110, R12 Gordini
I-4cyl 1.6L 8v OHV (FT/FT)
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intake
exhaust
camshaft data:
lash ramp
: 0.40mm
0.40mm
duration @ 0.1mm
: 318°
318°
duration @ 1.0mm
: 275°
275°
valve lift
: 12.05mm
12.05mm
cam lift
: 7.50mm
7.50mm
lobe angle
: 104°
104°
timing @ 1.0mm
: 33° / 62°
61° / 34°
valve lift @ TDC
: 5.15mm
5.15mm
parts setup:
cam wheels :
:
:
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
: View 99368
: View 99368
lower retainer
: not available
: not available
exterior spring
: View PAC-E99859
: View PAC-E99859
interior spring
: View PAC-I99859
: View PAC-I99859
fitted load / length
: 38kg @ 35.0mm
: 38kg @ 35.0mm
max. load / lift
: 109kg @ 13.0mm
: 109kg @ 13.0mm
REMARKS :
#
machining of cylinder head around valve boss required to fit inner spring
REMARKS :
#
- cam lobe sequence: EI-EI-EI-EI (crossflow head)
- total length: 519mm
- journal diameters: 41.94 - 41.94 - 41.94 - 34.94mm - 31.94mm
- pump between cam lobe 2-3 (version with pump between cam lobe 7-8 is not available)
- 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