Chrysler RAM TRUCK 2500 1994 Service Manual page 816

ENGINE SPECIFICATIONS (CONT.)
Valve Springs
Free Length (Approx.) 49.962 mm
(1.967 in)
Spring Tension @ 41.66 mm = * 3 7 8 N
(Valve Closed) (@ 1.64 in - 85 lbs)
Spring Tension @ 30.89 mm « 8 9 0 N
(Valve Open) (@ 1.212 in - 2 0 0 lbs)
Number of Coils 6.8
Installed Height 41.66 mm
(Spring Seat to Retainer) (1.64 in)
Wire Diameter 4 . 5 0 mm
(0.177 in)
V a l v e Timing
Exhaust Valve
Closes (ATC) 2 3 °
Opens (BBC) 6 1 °
Duration
264°
Intake Valve
Closes (ABC) 8 0 °
Opens (BTC)
130
Duration 2 7 4 °
Valve Overlap 36©
J 9 4 0 9 - 1 0 0
O V E R S I Z E AND UNDERSIZE ENGINE COMPONENT MARKINGS
C O N D I T I O N
IDENTIFICATION
LOCATION O F IDENTIFICATION
0.025 mm (0.001 inch)
U/S Crankshaft
R o r M
M-2-3 etc. (Indicating No. 2 & 3 main
bearing journal)
and/or
R-l-4 etc. (Indicating No. 1 & 4 connecting
rod journal)
Milled flat on number three crankshaft
counterweight
0.508 mm (0.020 inch)
O/S Cylinder Bores
A
Following engine serial number.
0.203 mm (0.008 inch)
O/S Tappets
•
3/8" diamond-shaped stamp Top pad — Front
of engine and flat ground on outside surface of
each O/S tappet bore.
0.127 mm (0.005 inch)
O/S Valve Stems
X
Milled pad adjacent to two 3/8" tapped holes
on each end of cylinder head.
J9209-120