LAMBORGHINI R8.230 DCR, Workshop Manual

Page: 27 / 51

10-3
TEChnICal CharaCTErIsTICs
namE InformaTIon sErIEs valuE unIT
Valve shaft diam -
eter outlet
Standard, fit H7 TCD 2013 4V 7,965 (+0 /
-0,015)
mm
Valve stem clear-
ance inlet
TCD 2013 4V 0,01 - 0,03 mm
Valve stem clear-
ance outlet
TCD 2013 4V 0,02 - 0,04 mm
Valve head diam -
eter inlet
TCD 2013 4V 38,2 (+/-0,1) mm
Valve head diam -
eter outlet
TCD 2013 4V 35,8 (+/-0,1) mm
Valve seat
Valve seat width
inlet
TCD 2013 4V 2,32 mm
Valve seat width
outlet
TCD 2013 4V 2,68 mm
Valve standback
dimension inlet
with seat armour -
ing
TCD 2013 4V 1,25 (+0,25 /
+0,1)
mm
Valve standback
dimension outlet
TCD 2013 4V 1,25 (+0,25 /
+0,1)
mm
Valve seat angle
inlet
TCD 2013 4V 30 (+/-0,5) °
Valve seat angle
outlet
TCD 2013 4V 45 (+/-1) °
Valve spring
Valve spring (un -
clamped normal),
length
TCD 2013 4V 64,48 mm
Valve spring wire
diameter
TCD 2013 4V 3,95 mm
Valve clearance
Valve clearance,
inlet
on cold engine,
(oil temperature
< 80 °C), after
a cooling down
time of at least
0.5 h
TCD 2013 4V 75 °
Valve clearance,
outlet
on cold engine,
(oil temperature
< 80 °C), after
a cooling down
time of at least
0.5 h
TCD 2013 4V 105 °
Valve clearance
setting
Valve overlap as
per setting dia -
gram, see: Table
T01 63
TCD 2013 4V - mm
Rocker arm/bracket
Rocker arm
bracket, bore
Diameter TCD 2013 4V 22 (+0,053 /
+0,02)
mm
Rocker arm axis Diameter, fit H7 TCD 2013 4V 22 (+0 / -0,021) mm
Driving gear
Main bearing pin
Main bearing pin
(normal)
Diameter mm TCD 2013 4V 85 (-0,02) mm
Main bearing pin 2 undermeasure
stages per
TCD 2013 4V 0,25 mm