3701658
tarmac rally - race
Mazda BP Hydraulic cam followers
I-4cyl 1.8L 16v DOHC (DTH/DTH)
intake
exhaust
camshaft data:
lash ramp
: 0.25mm
0.25mm
duration @ 0.1mm
: 285°
277°
duration @ 1.0mm
: 251°
243°
valve lift
: 12.50mm
12.00mm
cam lift
:
lobe angle
: 106°
106°
timing @ 1.0mm
: 20° / 51°
48° / 15°
valve lift @ TDC
: 3.70mm
3.15mm
parts setup:
cam wheels :
: View CTMA023
: View CTMA023
follower
: View CC017
: View CC017
valve lash
: View TS102
: View TS102
valve
: O.E.M.
: O.E.M.
valve locks
: O.E.M.
: O.E.M.
upper retainer
: View 99417/s
: View 99417/s
lower retainer
: O.E.M.
: O.E.M.
exterior spring
: View PAC-S90019
: View PAC-S90019
interior spring
fitted load / length
: 33kg @ 35.0mm
: 33kg @ 35.0mm
max. load / lift
: 82kg @ 12.5mm
: 82kg @ 12.5mm
REMARKS :
#
valve locks and retainer are not interchangeable with the parts of BP engines with original mechanical followers.
REMARKS :
#
Camshafts for use with upgraded cam followers (with shim between valve and cam follower)
#
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