2501480
turbo conversion
Honda F20C
I-4cyl 2.0L 16v DOHC
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intake
exhaust
camshaft data:
lash ramp
: 0.30mm
: 0.30mm
duration @ 0.1mm
: 308°
(277-277)
: 297°
(259-259)
duration @ 1.0mm
: 255°
(228-228)
: 239°
(210-210)
valve lift
: 13.05mm
(10.50-10.50)
: 11.40mm
(9.50-9.50)
cam lift
: 7.55mm
(6.10-6.10)
: 6.55mm
(5.55-5.55)
lobe angle
: 110°
(110-110)
: 120°
(120-120)
timing @ 1.0mm
: 18° / 57°
: 58° / 1°
valve lift @ TDC
: 3.25mm
(1.70-1.70)
: 1.40mm
(0.55-0.55)
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 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
: 108kg @ 14.0mm
: 108kg @ 14.0mm
REMARKS :
#
Replace lower retainer with flat shim of approximately 1mm thickness.
#
Spacer 93-25003 replaces the vtec rocker arm.
REMARKS :
#
check interference between cam and rocker arm, modify rocker arm if required
#
This engine is very sensitive on valve clearance. A valve clearance that is too big will result in poor performance, damage to valve and valve seat, and ultimately possible breaking of the valve.
The optimum cold setting is usually around 0.20mm (intake-exhaust). Don't exceed the valve clearance data as indicated in the Honda workshop manual.
#
for TURBO conversion (atmospheric to turbo)