Engine Overhaul Specifications (Nissan Terrano 1)

Table of contents: Z24 Engines ↓ V6 Engine ↓ K24 engines ↓

All dimensions, diameters and clearances are given in mm.

Z24 Engines

Oil pressure:
At idle speed not less than	0.6 kgf/cm²
At 3000 rpm	2.8 - 4.0 kgf/cm²
Compression (at 350 rpm)
Standard	10.3 kgf/cm²
The limit	7.9 kgf/cm²
Rocker arms and camshaft	See Chapter 2A
Cylinder head
Deformation of the split plane with the cylinder block	0,1
Valves
Valve stem diameter
Intake	7,965 - 7.980
Graduation	7,945 - 7,960
Valve bevel angle	45,50
Valve head cutting width:
Intake
Standard	1,3
The limit	0.5
Graduation
Standard	1,5
The limit	0,5
Free height of valve spring
External	49,77
Internal	44,0
Under load:
External	springs
Standard	40,0 (under a force of 23k1s)
The limit	40,0 (under a force of 19 kgf)
Internal	springs
Standard	35.0 (11xGs)
The limit	35.0 (8.9 kgf)
Maximum deviation from vertical
External	2,2
Internal	1,9
Inner diameter of guide bushing	8,000-8,018
Clearance between valve stem and guide bushing
Intake	0,020 - 0,053
Graduation	0,040 - 0,073
valve stem bending	no more than 0.2
Valve seat
Chamfer angle	45°
Belt width
Intake valve seats	1,8-2,4
Exhaust valve seats	1,5-1,9
Reduction of valve length due to trimming	0,20
Cylinder block
Deformation of the split plane under the head	no more than 0.1.
Inner diameter of cylinder:
Group 1	89,000-89,010
Group 2	89,010-89,020
Group 3	89,020-89,030
Group 4	89,030- 89,040
Group 5	89,040 - 89,050
Taper and ovality	no more than 0.015
Clearance between piston and cylinder	0,025-0,045
Pistons and rings
Piston diameter
on engines	Z24 1987.
Standard	88,965- 88,975
1st repair	88,965- 88,975
2nd repair	89,465-89,515
3rd repair	89,965-90,015
On engines	Z24 1988.
Group 1	88,965- 88,975
Group 2	88,975- 88,985
Group 3	88,985- 88,995
Group 4	88,995- 89,005
Group 5	89,005-89,015
Clearance in piston ring joints
For upper compression	0,25-0,40
For lower compression	0,15-0,30
For mass-collecting	0,30-0,90
Clearance between groove and piston ring
For upper compression rings	0,040-0,073
For lower compression rings	0,030-0,063
Crankshaft, connecting rods and bearings
Axial play of connecting rods
Standard	0,2-0,3
The Ultimate	0,6
Crankshaft axial play
Standard	0,05-0,18
The Ultimate	0,30
Main journal diameter	54,942-54,955
Diameter of connecting rod journals	49,961-49,974
Taper and ovality of necks
Standard	0,01
The limit	0,03
Main bearing clearance
Standard	0,020- 0,062
The Ultimate	0,12
Clearance in connecting rod bearings:
Standard	0,025- 0,055
The Ultimate	0,12
Flywheel runout no more than	0,15

Tightening torques (Nm)*

Main bearing cap bolts	43
Connecting rod bearing cap nuts	43

*See also Chapter 2, Part A

V6 Engine

Oil pressure
At idle	not less than 0.55 kgf/cm²;
At 3200 rpm	3.2 - 4.0 kgf/cm²
Compression (at 350 rpm)
Standard	10.3 kgf/cm²
The limit	7.9 kgf/cm²
Compression difference between cylinders	no more than 0.8 kgf/cm²
Rocker arms and camshaft	See, Ch. 2B
Cylinder head
Deformation of the split plane with the cylinder block	no more than 0.1
Head height	107+0,2
Valves
Valve bend	no more than 0.2 mm
Valve stem diameter
Intake	6,965 - 6,980
Graduation	7,965 - 7,970
Inner diameter of guide bushing
Intake	7,000-7,018
Graduation	8,000-8,018
Clearance between valve stem and guide bushing
Intake	0,020 - 0,053
Graduation	0,040 - 0,073
The Ultimate	0.10 mm
The width of the valve head edge is not more than	0,5
Valve length
Intake	125,3-125,9
Graduation	124,2-124,8
Length reduction due to trimming	0,20
Valve spring free length
Internal	44,10
External	51,20
Spring length under load
Internal	25.0 (26 kgf)
External	30.0 (53.4 kgf)
Maximum deviation from vertical
internal	1,9
External	2,2
Length of valve spring in working condition
Internal	35,0
External	40,0
Valve seats
Chamfer angle	45°
Belt width
Intake valve seats	1,75
Exhaust valve seats	1,7
Cylinder block
Deformation of the split plane under the head	no more than 0.1.
Inner diameter of cylinder:
Group 1	87,000-87,010
Group 2	87,010-87,020
Group 3	87,020 - 87,030
Group 4	87,030- 87,040
\Group 5	87,040 - 87,050
Increase in diameter due to wear	no more than 0.20
Taper and ovality	no more than 0.015
Pistons and rings
Piston diameter (Ah, see photo in text)
Group 1	86,965- 86,975
Group 2	86,975- 86,985
Group 3	86,985- 86,995
Group 4	86,995- 87,005
Group 5	87,005-87,015
Clearance between piston and cylinder
Before 1990.	0,025- 0,045
Since 1991.	0,015-0,035
The force required to insert a 0.04 mm thick feeler gauge between the piston and the cylinder is no more than	0.2-1.5 kgf
Clearance between groove and piston ring
For upper compression rings
Standard	0,040 - 0,073
The Ultimate	0,1
For lower compression rings
Standard	0,030 - 0,063
The Ultimate	0,1
For oil scraper rings	0,150-0,190
Clearance in piston ring joints
For upper compression
Standard	0,21 - 0,44
The Ultimate	1,0
For lower compression
Standard	0,18-0,44
The Ultimate	1,0
For oil scrapers	0,20-0,76
Crankshaft, connecting rods and bearings
Axial play of connecting rods
Standard	0,2-0,35
The Ultimate	0,4
Crankshaft axial play
Standard	0,05-0,17
The Ultimate	0,30
Main journal diameter
Group 0	62,967-62,975
Group 1	62,959-62,967
Group 2	62,951-62,959
Diameter of connecting rod journals	49,955-49,974
Taper and ovality of necks	0,005
Main bearing clearance
Standard	0,028- 0,055
The Ultimate	0,090
Clearance in connecting rod bearings:
Standard	0,014-0,054
The Ultimate	0,090
Main bearing diameter	identified by color marking
Group 0	black
Group 1	brown
Group 2	green
Group 3	yellow
Group 4	blue

Tightening torques (Nm)*

Main bearing cap bolts	80-98
Connecting rod bearing cap nuts
Stage 1	12-14
Stage 2	28-33
Rear Oil Seal Holder Bolts	5-6

*See also Chapter 2, Part B

K24 engines

Oil pressure:
At idle speed not less than	0.6 kgf/cm²
At 3000 rpm	2.8 - 4.0 kgf/cm²
Compression (at 350 rpm)
Standard	11.6 kgf/cm²
Limit	8.7 kgf/cm²
Rocker arms and camshaft	See Chapter 2A
Cylinder head
Deformation of the split plane with the cylinder block	no more than 0.1
Valves
Valve stem diameter
Intake	6,965-6,980
Graduation	7,948 - 7,960
Valve bevel angle	45,50
Valve head edge width:
Intake
Standard	1,15-1,45
The limit	0,5
Graduation
Standard	1,35-1,65
The limit	0,5
Valve spring free length
Intake valves
External	57,44
Internal	53,34
Exhaust valves
External	53,21
Internal	47,95
Height of the spring in working condition
Outer intake valve springs
Standard		37,6 (under a force of 61.6 kgf)
The limit		37,6 (under a force of 57.9 kgf)
Inner intake valve springs
Standard		32,6 (under a force of 29.0 kgf)
The limit		32,6 (under a force of 27.2 kgf)\|
Outer springs of exhaust valves
Standard		34,1 (under a force of 65.3 kgf)
The limit		34,1 (under a force of 63.3 kgf)
Internal springs of exhaust valves
Standard		29,1 (under gain 33.5 kGs)
The limit		29,1 (under a force of 32.5 kgf)
Maximum deviation from vertical
Intake valves
External		2,5
Internal		2,3
Exhaust valves
External		2,3
Internal		2,1
Inner diameter of guide bushing
Intake valves		7,000-7,018
Exhaust valves		8,000-8.018
Clearance between valve stem and guide bushing
Intake		0,020-0,053
Graduation		0,040-0,070
Valve stem bending		no more than 0.2
Valve seat
Chamfer angle		45°
Belt width
Intake valve seats		1,6-1,7
Exhaust valve seats		1,7-2,1
Reduction of valve length due to trimming		0,20
Cylinder block
Deformation of the split plane under the head		no more than 0.2
Inner diameter of cylinder:
Group 1		89,000-89,010
Group 2		89,010-89,020
Group 3		89,020-89,030
Taper and ovality		no more than 0.015
Clearance between piston and cylinder		0,020-0,040
Pistons and rings
Piston diameter		Standard
Group 1		88,970-88,980
Group 2		88,980-88,990
Group 3		88,990-89,000
1st repair		89,470-89,500
2nd repair		89,970-90,000
Clearance in piston ring joints
For upper compression		0,28-0,52
For lower compression		0,45-0,69
For oil scrapers		0,20-0,69
Clearance between groove and piston		ring
For upper compression rings		0,040-0,080
For lower compression rings		0,030-0,070
For oil scrapers		0,065-0,135
Crankshaft, connecting rods and bearings
Axial play of connecting rods
Standard		0,2-0,4
The Ultimate		0,6
Crankshaft axial play
Standard		0,05-0,18
The Ultimate		0,30
Main journal diameter
Group 1		63,645-63,652
Group 2		63,652-63,663
Group 3		63,663-63,672
Diameter of connecting rod journals		59,951-59,975
Taper and ovality of necks
Before 1990.		no more than 0.01
Since 1991.		0
The limit
Before 1990.		no more than 0.03
Since 1991.		0,01
Main bearing clearance
Standard		0,020- 0,047
The Ultimate		0,1
Clearance in connecting rod bearings:
Standard		0,010-0,035
The Ultimate		0,090
Flywheel runout		no more than 0.1