5.0l
/ 305 cid / 5.7l / 350 cid ENGINES
SERVICE MANUAL NUMBER 24
Valve Guide Bore Repair
IMPORTANT: Measure valve stem diameter of both the intake and exhaust valve, as
valve stem diameter may or may not be the same for both valves.
If .015 in. oversize valves are required, ream valve guide bores for oversize valves, as fol-
lows:
1.
2.
Measure valve stem diameter of old valve being replaced and select proper size valve
guide reamer from chart below.
Standard Valve Stem Diameter
Reamer Required for .015 In. Oversize Valve
.341
in. (8.66)
J-5830-02
Ream valve guide bores.
a
72337
a - Valve Guide Reamer
3.
Remove the sharp corner created by reamer at top of valve guide.
Valve Springs - Checking Tension
Use valve spring tester to check valve spring tension with dampers removed. Refer to
“Specifications.”
IMPORTANT: Replace the spring if the spring tension is less than 76 lb. (338 N) at 1.70
in (43.2 mm) length.
b
a
72308
a - Valve Spring Tester (P/N J-9666)
b - Torque Wrench
Index
Page 3A-36
90-861327--1 OCTOBER 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(1 votes, average: 4 out of 4)
Marine readers have rated Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID 4.0 out of 4.0 based on 1 product reviews. Great performance engine.
Class 1