Chrysler RAM TRUCK 2500 1994 Service Manual page 790

E N G I N E SPECIFICATIONS (CON%)
Valve S p r i n g s
Free Length (Approx.) . . 49.962 mm
(1.967 in)
Spring Tension . . . . . . . . . . . . . . . . @ 41.66 mm = 378 N
(Valve Closed) (@ 1.64 in » 85 lbs)
Spring Tension @ 30.89 mm = 890 N
(Valve Open) (@ 1.212 in « 200 lbs)
Number of Coils 6.8
Installed Height. 41.66 mm
(Spring Seat to Retainer) (1.64 in)
Wire Diameter . . . . 4.50 mm
(0.177 in)
Valve Timing
Exhaust Valve
Closes (ATC) 21°
Opens (BBC) . . .
. . . . . . 60°
Duration
264°
Intake Valve
Closes (ABC)
61°
Opens (BTC) . .10°
Duration
250°
Valve Overlap. . . 3 1 0
J9409-99
OVERSIZE AND UNDERSIZE ENGINE COMPONENT MARKINGS
CONDITION
IDINTlflCATlON
LOCATION OF 1PINTIMCATION
CRANKSHAFT JOURNALS
(UNDERSIZE)
0.0254 mm (0.001 in.)
R o r M
M-2-3 etc. (indicating no. 2 and 3 main bearing
journal)
and/or
R-l -4 etc. (indicating no. 1 and 4 connecting rod
journal)
Milled flat on no. 8 crankshaft counterweight.
HYDRAULIC TAPPETS
(OVERSIZE)
0.2032 mm (0.008 in.)
•
Diamond-shaped stamp top pad - front of
engine and flat ground on outside surface of
each O / S tappet bore.
VALVE STEMS (OVERSIZE)
0.127 mm (0.005 in.)
X
Milled pad adjacent to two tapped holes
(3/8 in.) on each end of cylinder head.
J930§-S2