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4 cyl

H25

2472 cc

BORE

STROKE

FIRING

MAIN

ROD

ORDER

JOURNAL

JOURNAL

3.6220

3.6610

1-3-4-2

2.4785

1.9675

SPARK PLUG

SPARK PLUG

AIR

IGN.TIMING

OIL CAPACITY

TYPE

GAP

GAP

IDLE SPEED

WITH FILTER

BP4ES

.031-.035

.0138-.0177

4 deg.BTDC/650

4 U.S.qts.

TORQUE VALUES

LOCATION

FT. LB.

LOCATION

FT. LB.

Main brg.caps

61-69

Oil pan drain plug

14-29

Rod brg. caps

23-27

Oil pump bolt

15-25

Cyl. head bolts

54-61

Rocker arm nut

Cam sprocket bolt

22-29

Rckr.shaft brckt.bolt

36-43

Crank pulley bolt

105-112

Side cover bolt

Flywheel bolt

98-105

Spark plug

13-17

Flywheel housing

32-43

Water outlet bolt

10-15

Manifold bolt & nut

12-14

Water pump bolt

14-18

Oil pan bolt

4.7-5.5

Wtr.pmp.pulley bolt

PISTON

Diameter

3.6207-3.6226

Cyl.bore clearance

.0010-.0018

Pin diameter

.8265-.8267

RINGS

Ring gap-Top

.0098-.0138

Ring gap-2nd

.0059-.0098

Ring gap-Oil

.012-.035

CRANKSHAFT

Main journal dia.

2.4780-2.4785

Rod journal dia.

1.9670-1.9675

Main run clearance

.0008-.0024

Rod run clearance

.0004-.0026

End play

.0020-.0071

CAMSHAFT

Front bushing ID

1.7902-1.7907

End play

.0020-.0091

Center bushing ID

1.7302-1.7307

Rear bushing ID

1.7302-1.7307

VALVES

Intake length

4.2736-4.2854

Exhaust length

4.2539-4.2657

Intake stem dia.

.2744-.2750

Exhaust stem dia.

.2734-.2740

Intake head dia.

1.378-1.386

Exhaust head dia.

1.181-1.189

Intake face angle

45 deg. 30 sec.

Exhaust face angle

45 deg. 30 sec.

Intake clearance

.015 hot

Exhaust clearance

.015 hot