7900305
tarmac rally - race
Volvo B30
I-6cyl 3.0L 12v OHV
intake
exhaust
camshaft data:
lash ramp
: 0.40mm
0.40mm
duration @ 0.1mm
: 306°
306°
duration @ 1.0mm
: 256°
256°
valve lift
: 11.65mm
11.65mm
cam lift
: 7.75mm
7.75mm
lobe angle
: 106°
106°
timing @ 1.0mm
: 22° / 54°
54° / 22°
valve lift @ TDC
: 3.90mm
3.90mm
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
: not available
: not available
lower retainer
: not available
: not available
exterior spring
: not available
: not available
interior spring
fitted load / length
: 0kg @ 0.0mm
: 0kg @ 0.0mm
max. load / lift
: 0kg @ 0.0mm
: 0kg @ 0.0mm
REMARKS :
#
check std valve spring setup for coil bind length and use valve spring kit if required
#
valve spring kit can be developed on request
REMARKS :
#
- These camshafts fit B30 pushrod engines. Volvo has used different camshaft specifications, please check cam base diameter and cam height when ordering sports camshafts. Depending on the engine version and application, extra modifications may be required.
- steel billets with pump lobe between 6nd-7nd cam, and gear between 10th-11th cam
#
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