A. Install the connecting rod cap on the
connecting rod and tighten the bolt
nuts to
60-70 lb-ft (81-95 Nm)
torque.
NOTE
Do not over torque the connecting
rod bolt nuts.
Over torque may
permanently distort the connecting
rod cap.
B. Measure diameter A and B as shown
Figure 11B-125. Connecting Rod
i n Figure 11B-127 on page 11B-80.
Details
C. Obtain average of A and B to obtain
rosion on the connecting rod saddle and
s i z e at split line.
piston pin contact surface with the rod
before reassembly.
A+ B=X
Average
of
A
+
B
NOTE
2
Never use crocus cloth on the
D. Measure C. The difference in the re-
bearing side of the pin.
sults of the measurement X and C
gives bore out-of round and can be
0.005" maximum.
Connecting rods being removed from an
original build engine can be reused as
E. Add C with X and average to obtain
is, after considering the following:
a v e r a g e bore size.
1. Check for visual damage (bent).
C + X = Average diameter of bore
2. A previous bearing(s) or related fail-
2
ure.
S p e c i f i c a t i o n s : 3.2495" to 3.2515".
3. Is the connecting rod blue at the top
or bottom?
NOTE
4. Fretting at split line between the con-
If the cross-head connecting rod
necting rod and cap.
bore is not to specifications, the
rod must be scrapped and cannot
pound-in of the bolt head
5. Excessive
be machined.
or nut.
If the connecting rod has been subjected
it should be
3. Determine
taper as
follows
(see
to any of the above,
Figure 11B-127 on page 11B-80):
scrapped.
A. Subtract D1 from D2 to find the dif-
In qualifying a used connecting rod from
ference.
a source other than an original engine,
the following checks should be made in
B. The difference can be 0.0005" maxi-
addition to the above.
mum.
1. Check for cracks (Figure 11B-126 on
4. Determine length by finding the dis-
page 11B-79) by the magnetic particle
between E1
tance
and
E2
(see
method as outlined in "Inspection for
Cracks" on page 11B-47.
Specifications: 10.121" to 10.126".
2. Determine bore diameter of the rod,
using a dial bore gauge and master ring
as follows (see Figure 11B-127 on page
11B-80).
