2503301
full race
Honda F20C
I-4cyl 2.0L 16v DOHC
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intake
exhaust
camshaft data:
lash ramp
: 0.28mm
0.30mm
duration @ 0.1mm
: 312°
300°
duration @ 1.0mm
: 276°
266°
valve lift
: 15.00mm
14.00mm
cam lift
: 9.55mm
8.00mm
lobe angle
: 105°
105°
timing @ 1.0mm
: 33° / 63°
58° / 28°
valve lift @ TDC
: 5.95mm
5.20mm
parts setup:
cam wheels :
:
:
follower
: View INFO
: View INFO
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 99356/s
: View 99356/s
lower retainer
: remove
: remove
exterior spring
: View PAC-E15009
: View PAC-E15009
interior spring
: View PAC-I15009
: View PAC-I15009
fitted load / length
: 30kg @ 35.7mm
: 30kg @ 35.7mm
max. load / lift
: 118kg @ 16.0mm
: 118kg @ 16.0mm
REMARKS :
#
Replace lower retainer with flat shim of approximately 1mm thickness.
#
8x CAT026 rocker arm (in)
#
8x CAT027 rocker arm (ex)
#
8x CAT026-SHAFT
#
16x CAT026-R2
REMARKS :
#
Camshafts for use without Vtec system, using outer cam lobes and outer rocker arms only:
- the complete rocker arm assembly is replaced by two Cat Cams slipper rocker arms and a spacer
- profiles with a more aggressive design to fully exploit the more stable valve train
- Leave the VTEC solenoid constantly in the "VTEC ON" position (high oil pressure) to allow sufficient oil supply to the complete cylinder head.
#
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