SERVICE MANUAL NUMBER 23
454 CID (7.4L) / 502 CID (8.2L)
7.4L
MPI (L-29) Engine Specifications (Continued)
PISTON RING
MODEL
7.4L
Production
Service
2nd
.0012-.0029 (0.0304-0.0737)
Groove Side
Clearance
High Production Limit + .010
(0.254)
Max
Compression
Top
2nd
.010-.018 (0.254-0.457)
.016-.024 (0.406-0.6096)
High Limit Production + .010
Production
Gap
Service
Production
Service
(0.254)
Max
.0050-.0065 (0.1270-0.1651)
Groove Side
Clearance
High Limit Production + .001
(0.0254)
Oil
Production
Service
.010-.030 (0.254-0.762)
Gap
High Limit Production + .001
(0.0254)
PISTON PIN
MODEL
7.4L
Diameter
.9895-.9897 (25.133-25.1383)
.0002-.0007 (0.0051-0.0177)
.001 (0.0254) Max
Production
Service
Clearance In
Piston
Fit In Rod
.0031-.0021 (0.0787-0.0533) Interference
VALVE SPRING
MODEL
7.4L
Free Length
2.12 (53.9)
1.838
in. (46.6850 mm) at 71-79 Lbs.
(316-351 N)
Closed
Open
Valve Spring
Pressure
1.3470
in. (34.2130 mm) at 238-262 Lbs.
(1059-1165 N)
Installed Height
1.8380 (46.6850) ± .07937 (2.015)
FLYWHEEL
MODEL
7.4L
Runout
.008 (0.203) Max
Index
90-861326--1 MARCH 1999
Page 3A-13
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated Mercury MerCruiser GM V8 GM V8 454 CID 7.4L and 502 cid 8.2L Marine Engines Service Manual Number 23 5.0 out of 5.0 based on 1 product reviews. Just need the manual. Wrote review. Can't technically review what I haven't seen yet...