Mercury MerCruiser MCM 502 Mag MPI

454 CID (7.4L) / 502 CID (8.2L) SERVICE MANUAL NUMBER 23
Page 3A-14
90-861326--1 MARCH 1999
7.4L MPI (L-29) Engine Specifications (Continued)
CRANKSHAFT
MODEL 7.4L
Diameter
No. 1, 2, 3, 4,
5
2.7482-2.7489
(69.8040-69.8220)
Main Journal
Ta
p
er
Production .0004 (0.0101) Max
M
a
i
n
J
ourna
l
Ta er
Service .001 (0.0254) Max
Out of Round
Production .0004 (0.0101) Max
Out
of
Round
Service .001 (0.0254) Max
Production
No. 1
.0017-.0030
(0.043-0.076)
Production
No. 1, 2, 3, 4
.0011-.0024
(.0279-.0609)
Main Bearing Clearance Production No. 5
.0025-.0038
(0.0635-0.0965)
Service
No. 1, 2, 3, 4
.0010-.0030
(0.0254-0.0762)
Service
No. 5
.0025-.0040
(.0635-.1016)
Crankshaft End Play
.005-.0011
(0.1270-0.2794)
Diameter
2.1990-2.1996
(55.8546-55.8698)
Connecting Rod Journal
Ta
p
er
Production .0005 (0.0127) Max
C
onnec
ti
ng
R
o
d
J
ourna
l
Ta er
Service .001 (0.0254) Max
Out of Round
Production .0005 (0.0127) Max
Out
of
Round
Service .001 (0.0254) Max
Rod Bearing Clearance
Production
.0011-.0029
(0.0279-0.0736)
g
Service .001 (0.0254) Max
Rod Side Clearance
.013-.023
(0.330-0.5842)
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Index