1301009
tarmac rally - race
Bmw S38 B39
I-6cyl 3.8L 24v DOHC (DTs/DTs)
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intake
exhaust
camshaft data:
lash ramp
: 0.20mm
0.20mm
duration @ 0.1mm
: 299°
294°
duration @ 1.0mm
: 256°
248°
valve lift
: 13.25mm
12.75mm
cam lift
:
lobe angle
: 105°
105°
timing @ 1.0mm
: 23° / 53°
49° / 19°
valve lift @ TDC
: 4.45mm
3.85mm
parts setup:
cam wheels :
:
:
follower
: View CC010
: View CC010
valve lash
: View TS102
: View TS102
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
: View PAC-E95009
: View PAC-E95009
interior spring
: View PAC-I95009
: View PAC-I95009
fitted load / length
: 37kg @ 35.5mm
: 37kg @ 35.5mm
max. load / lift
: 112kg @ 14.0mm
: 112kg @ 14.0mm
REMARKS :
#
different valve spring setups have been used in the original engines: please double check the measurements and contact Catcams in case of doubt
REMARKS :
#
these camshafts can also be used in M88 (3.4L) and S38B36 (3.6L) engines
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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
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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
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These profiles require race cam followers with shim between cam follower and valve (shim under follower). It is not possible to use these profiles on std cam followers with the shim between the follower and the cam (shim over follower).
#
ONLY for use in competition engines with independent engine management (throttle position sensor) or carburettors