O.E.M.
Mazda BP Hydraulic cam followers
I-4cyl 1.8L 16v DOHC (DTH/DTH)
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intake
exhaust
camshaft data:
lash ramp
: hydro
hydro
duration @ 0.1mm
: 239°
253°
duration @ 1.0mm
: 195°
206°
valve lift
: 8.10mm
8.60mm
cam lift
:
lobe angle
: 108°
112°
timing @ 1.0mm
: -10° / 25°
35° / -9°
valve lift @ TDC
: 0.30mm
0.45mm
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
: O.E.M.
: O.E.M.
exterior spring
: O.E.M.
: O.E.M.
interior spring
fitted load / length
: 23kg @ 39.5mm
: 23kg @ 39.5mm
max. load / lift
: 70kg @ 10.0mm
: 70kg @ 10.0mm
REMARKS :
#
valve locks and retainer are not interchangeable with the parts of the later BP engines with original mechanical followers.
REMARKS :
#
camshafts for use in 1840cc BP engines with originally hydraulic cam followers (30mm):
- short intake camshaft
- long exhaust camshaft, grooves in cam bearings, slot for distributor drive
#
O.E.M. specification camshaft set for MAZDA 1,8L 16v (engine: "BP" - unleaded fuel version)