Mercury MerCruiser MCM 454 Mag MPI

454 CID (7.4L) / 502 CID (8.2L) SERVICE MANUAL NUMBER 23
Page 3A-8
90-861326--1 MARCH 1999
454 Mag / 502 Mag / 8.2L (Except 7.4L MPI L-29) Engine Specifications
(Continued)
PISTON RING
MODEL 454 MAG 502 MAG / 8.2L
Production
To p
.0017-.0032
(0.044-0.081)
.0017-.0032
(0.044-0.081)
Groove Side
Clearance
Production
2nd
.0017-.0032
(0.044-0.081)
.0017-.0032
(0.044-0.081)
Com
p
ression
Service
High Production Limit + .010
(0.02) Max
Com ression
Production
Top
.010-.018
(0.25-0.46)
.011-.021
(0.28-0.53)
Gap
Production
2nd
.016-.024
(0.41-0.61)
.016-.026
(0.41-0.66)
Service
High Limit Production + .010
(0.25) Max
Production .0050-.0065 (0.127-0.165)
O
Groove Side
Clearance
Service
High Limit
Production +
.001 (0.25)
High Limit
Production
.005 (0.12)
Max
Oil
Production
.020-.035
(0.508-0.889)
.010-.030
(0.254-0.76)
Gap
Service
High Limit
Production +
.001 (0.25)
High Limit
Production
.005 (0.12)
Max
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Index