CHRYSLER SERVICE MANUAL
ENGINE—15
REAM IN PLACE EXHAUST VAIVE STEM GUIDE /
"RfcAM IN PLACE INTAKE VALVE STEM
GUIDEV
MAXIMUM MEASUREMENT
51x36A
Fig.
15—Exhaust and Intake Valve Guide Installed
in Head (FirePower)
(FirePower Engines), or ream guides for over-
size valves (SpitFire Engines), to next over-
size (if other than standard).
11.
REMOVAL AND INSTALLATION OF
VALVE GUIDES
On FirePower Engines drive out guides
through top of cylinder heads with Tool DD-
883.
Install as follows: Turn cylinder head with
combustion chamber facing up. Drive valve
guides into position with a suitable driver to
dimensions shown in Figure 15. After new
valve guides have been installed, ream each
guide .374 to .375 inch with Tool
C-741.
On
SpitFire Engines valves with oversize stems
are available in .005, .015, and .030 inch. Ream-
ers to accommodate the oversize valve stems
are as follows: Reamer Tool C-3433 (.379 to
INTAKE
VALVE
\MARGIN
X
FACE-
EXHAUST
VALVE
STEM
VALVE
SPRING
RETAINER
.'
LOCK
GROOViS
MINIMUM MEASUREMENT
55x733 "*
Fig.
17—Checking Valve Stem Position (SpitFire)
.380 inch), Reamer Tool C-3427 (.404 to .405
inch).
Slowly turn reamer by hand and clean
guide thoroughly before installing new valve.
CAUTION
Do not attempt to ream valve guides from stand-
ard directly to .030 inch. Use step procedure of
.005,
.015, and .030 inch so the valve guides
may he reamed true in relation to valve seat.
12.
REFACING VALVES AND VALVE SEATS
The intake and exhaust valves are faced to a
45 degree angle. When refacing valve, always
check remaining margin (Fig. 16). Valves with
less than %
4
inch margin should be discarded.
The angle of both valve and seat should be
identical. When refacing valve seats with Tool
MTH-80, it is important that correct size valve
guide pilot be used for reseating stones. A true
and complete surface must be obtained. Check
concentricity of valve seat using a dial indi-
cator
;
total runout should not exceed .002 inch
(total indicator reading). When the seat is
MINIMUM MEASUREMENT
MAXIMUM MEASUREMENT
VALVE STEM LENGTH GAUGE
EMENT—i
cyT. il*
54x330A
Fig.
16—Intake and Exhaust Valve Nomenclature
1x758
Fig.
18—Checking Valve Stem Position (FirePower)
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