1300148
tarmac rally - race
Bmw M10 B18 105hp
I-4cyl 1.8L 8v SOHC (RP/RP)
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intake
exhaust
camshaft data:
lash ramp
: 0.35mm
0.35mm
duration @ 0.1mm
: 309°
310°
duration @ 1.0mm
: 265°
266°
valve lift
: 10.80mm
10.85mm
cam lift
: 8.70mm
8.75mm
lobe angle
: 110°
110°
timing @ 1.0mm
: 27° / 58°
60° / 26°
valve lift @ TDC
: 4.10mm
3.85mm
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
: 31kg @ 37.0mm
: 31kg @ 37.0mm
max. load / lift
: 86kg @ 11.5mm
: 86kg @ 11.5mm
REMARKS :
#
original valve spring info is not available
#
larger excenter discs (part number "99019" - D18mm) available to adjust valve clearance for camshafts with reduced cam base diameter
#
Cat Cams steel billet rocker arms (part number "CAT021") are strongly advised for use over 7000rpm
REMARKS :
#
Please use the correct part number code for your engine:
- 13001xx: small bearing (42.95mm-41.95mm-34.95mm), right gear
- 13002xx: small bearing (42.95mm-41.95mm-34.95mm), left gear
- 13021xx: big bearing (44.95mm-43.95mm-34.95mm), right gear
- 13022xx: big bearing (44.95mm-43.95mm-34.95mm), left gear
left right gear.jpg Difference between left and right gear
The cams are drilled for extra lubrication. The internal lubrication can be sealed with an M3 Allen screw in the first bearing.
BMW_M10-M30_rocker_arm.gif NOW AVAILABLE: CATCAMS steel billet rocker arms (coated) with original Mahle valve adjustment screws !!!
#
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
#
We have two types of adjustable cam sprockets available:
-
ViewTBM010: single chain
-
ViewTBM012: double chain