Engine Block Description; Standard Procedure - Cylinder Bore Honing - Chrysler PT Cruiser Service & Repair Manual

PT
INTAKE/EXHAUST VALVES & SEATS (Continued)
Fig. 54 Valve Tip Height/Valve Spring Installed
A - VALVE TIP HEIGHT
B - VALVE SPRING INSTALLED HEIGHT
1 - GARTER SPRING
2 - TOP OF VALVE SPRING SEAT/SEAL
3 - CYLINDER HEAD SURFACE
ENGINE BLOCK
DESCRIPTION
The cast iron engine block is a two-piece assembly,
consisting of the engine block and bedplate (Fig. 55).
The bedplate incorporates the main bearing caps and
bolts to the engine block. This design offers a much
stronger lower end and increased engine block rigid-
ity. The rear oil seal retainer is integral with the
block. The bedplate and block are serviced as an
assembly.
Height
STANDARD PROCEDURE - CYLINDER BORE
HONING
(1) Used carefully, the cylinder bore resizing hone,
recommended tool C-823 or equivalent, equipped
with 220 grit stones, is the best tool for this honing
procedure. In addition to deglazing, it will reduce
taper and out-of-round as well as removing light
scuffing, scoring or scratches. Usually a few strokes
will clean up a bore and maintain the required lim-
its.
(2) Deglazing of the cylinder walls may be done
using a cylinder surfacing hone, recommended tool
C-3501 or equivalent, equipped with 280 grit stones,
if the cylinder bore is straight and round. 20–60
strokes depending on the bore condition, will be suf-
ficient to provide a satisfactory surface. Use a light
honing oil. Do not use engine or transmission oil,
mineral spirits or kerosene. Inspect cylinder walls
after each 20 strokes.
(3) Honing should be done by moving the hone up
and down fast enough to get a cross-hatch pattern.
When hone marks intersect at 40-60 degrees, the
cross hatch angle is most satisfactory for proper seat-
ing of rings (Fig. 56).
ENGINE 1.6L SOHC 9 - 41