2290402
tarmac rally - race
Ford ZH17 Sigma VVT in, 126hp
I-4cyl 1.7L 16v DOHC (DT/DT)
intake
exhaust
camshaft data:
lash ramp
: 0.20mm
0.20mm
duration @ 0.1mm
: 286°
277°
duration @ 1.0mm
: 256°
246°
valve lift
: 11.60mm
11.15mm
cam lift
:
lobe angle
: 106°
106°
timing @ 1.0mm
: 22° / 54°
49° / 17°
valve lift @ TDC
: 3.65mm
3.15mm
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
: O.E.M.
: O.E.M.
lower retainer
: View 99503/O
: View 99503/O
exterior spring
: View PAC-E99865
: View PAC-E99865
interior spring
fitted load / length
: 22kg @ 30.5mm
: 22kg @ 30.5mm
max. load / lift
: 48kg @ 12.5mm
: 48kg @ 12.5mm
REMARKS :
#
Lower valve seal/guide for valve lift >10.5mm
REMARKS :
#
ONLY for competition engines without VANOS system
#
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
#
valve seals must be lowered, race valvespring kit is required (available on special request only)
#
ONLY for dirt track applications and pro street use with adjustable engine management or carburettors