Then, 4.6285" + 0.001" boring tolerance
range is not broken down into classifica-
will
allow
a
bore s i z e o f 4 . 6 2 8 5 " t o
tions.
4.6295" and a possible liner-to-block
In deciding whether boring is necessary
clearance of 0.0005" to 0.0015".
The
o r n o t , keep in mind that each bore in a
clearance tolerance is the dimensional
used block must not be out-of-round or
difference between the liner O.D. and
tapered more than 0.002".
If the aver-
the block bore I.D..
age block bore is over 4.6285" the cylin-
der block should be bored oversize.
Fitting Cylinder Liner in Block Bore
To determine what size to re-bore the
1. Wipe the inside and outside of the lin-
cylinder block for an oversize liner, each
service liner used must be measured on
er clean and make sure the block bore
the outside diameter for size in three
and counterbore are clean.
places (under the flange, between the
flange and the ports, and above the
2. Place a standard size cylinder liner
ports).
insert (0.1795"-0.1800" thick) in the
The cylinder bore size will be
determined by the average liner meas-
block counterbore (see Figure 11B-136
urement taken at the three positions
3. Push the cylinder liner into the cylin-
der block until the liner flange rests on
the insert.
Do not use excessive force
to install the liner.
The liner should
slide smoothly in place with hand pres-
sure. If a new liner cannot be pushed in
place, light honing of the block bore may
be necessary to obtain the desired fit for
best heat transfer.
Figure 11B-135. Cylinder Liner
Classification
11B-87
E n g i n e (Less Major Assemblies)
