Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1485
4. Position valve springs (3) and retainer (2) on spring
seat (4).
5. Compress valve spring with a valve spring com-
pressor.
6. Install retainer locks (1) and release tool.
7. If valves and/or seats are refaced, measure the
installed height of springs (4). Measurement is
taken from top of spring seat to the bottom surface
of spring retainer. If height is greater than 38.75
mm (1.5256 in.), install a 0.762 mm (0.030 in.)
spacer in head counterbore under the valve spring
seat to bring spring height back within specification.
9 - 1964
ENGINE - 2.7L DOHC - SERVICE INFORMATION
LX
REMOVAL
1. Remove cylinder head(s) (Refer to 9 - ENGINE/
CYLINDER HEAD - REMOVAL).
2. Remove valve spring (3) (Refer to 9 - ENGINE/
CYLINDER HEAD/VALVE SPRINGS - REMOVAL).
3. Before removing valves (3), remove any burrs
from valve stem retainer lock grooves (2) and
stem tip (1) to prevent damage to the valve
guides.
4. Remove valve. Identify each valve to ensure instal-
lation in original location.
LX
ENGINE - 2.7L DOHC - SERVICE INFORMATION
9 - 1965
INSPECTION
VALVES
1. Clean and inspect valves thoroughly. Replace
burned, warped and cracked valves.
2. Inspect retainer lock grooves for wear or damage
(2).
3. Inspect valve face (4) for for wear and pitting.
4. Measure valve stems (3) and margins (5) for wear.
For valve specifications, (Refer to 9 - ENGINE -
SPECIFICATIONS).
NOTE: Valve stems (3) are chrome plated and should not be polished.
VALVE GUIDES
1. Remove carbon and varnish deposits from inside of
valve guides with a reliable guide cleaner.
2. Measure valve stem-to-guide clearance as follows:
3. Install valve (2) into cylinder head so it is 15 mm
(0.590 inch.) off the valve seat. A small piece of
hose may be used to hold valve in place.
4. Attach dial indicator Tool C-3339 (1) to cylinder
head and set it at right angle of valve stem being
measured.
5. Move valve to and from the indicator. For clearance
specifications, (Refer to 9 - ENGINE - SPECIFICA-
TIONS).
NOTE: If stem-to-guide clearance exceeds specifi-
cations, you must measure valve stem. If valve
stem is within specifications or if guide is loose in
cylinder head, replace cylinder head.
9 - 1966
ENGINE - 2.7L DOHC - SERVICE INFORMATION
LX
INSTALLATION
1. Coat valve stems (2) with clean engine oil and
insert them in cylinder head.
2. If valves or seats have been reground, check valve
tip height (5). If valve tip height (5) for intake valve
is greater than 47.836 mm (1.883 in.) or 47.837
mm (1.883 in.) for exhaust valve, grind valve tip
until within specifications. Make sure measurement
is taken from cylinder head surface (7) to the top of
valve stem (2).
3. Install valve stem seals (8) (Refer to 9 - ENGINE/
CYLINDER HEAD/VALVE STEM SEALS - INSTAL-
LATION).
4. After installing valve stem seals, make sure the
garter spring (9) is in place.
5. Install valve spring (3) (Refer to 9 - ENGINE/CYL-
INDER HEAD/VALVE SPRINGS - INSTALLATION).
LX
ENGINE - 2.7L DOHC - SERVICE INFORMATION
9 - 1967
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