CYLINDER BLOCKEM-203
< SERVICE INFORMATION > [MR18DE]
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Disassembly and AssemblyINFOID:0000000005931033
DISASSEMBLY
1. Remove engine and transaxle assembly from vehicle, separate transaxle from engine. Refer to
EM-197.
2. Install engine to engine stand as follows;
a. Remove flywheel (M/T models) or drive plate (1) (A/T or CVT models).
• Secure flywheel (M/T models) or drive plate (A/T or CVT mod-els) using Tool (A), and remove bolts.
CAUTION:
Be careful not to damage or scratch drive plate (A/T or CVT
models) and contact surface for clutch disc of flywheel (M/T
models).
NOTE:
Figure shows drive plate (1) (A/T or CVT models)
b. Lift the engine with a hoist to install it onto widely use engine stand. CAUTION:
• Use the engine stand that has a load capacity [approximately 135 kg (298 lb) or more] large
enough for supporting the engine weight.
• If the load capacity of stand is not adequate, remove the following parts beforehand to reduce the poten-
tial risk of overturning stand.
- Exhaust manifold; Refer to EM-141
.
- Rocker cover; Refer to EM-151
.
NOTE:
The figure shows an example of widely used engine stand (A)
that can support mating surface of transaxle with flywheel (M/T
models) or drive plate (A/T or CVT models) removed.
CAUTION:
Before removing the hanging chains, make sure the engine
stand is stable and there is no risk of overturning.
3. Remove oil pan (upper and lower). Refer to EM-144
.
4. Remove cylinder head. Refer to EM-186
.
5. Remove thermostat housing. Refer to CO-47
.
6. Remove knock sensor. CAUTION:
Carefully handle knock sensor avoiding shocks.
7. Remove crankshaft position sensor (POS) cover and crankshaft position sensor (POS).
7. Oil pressure switch 8. Top ring 9. Second ring
10. Oil ring 11. Snap ring 12. Piston
13. Piston pin 14. Connecting rod 15. Thrust bearing
16. Connecting rod bearing upper 17. Main bearing upper 18. Crankshaft key
19. Main bearing lower 20. Connecting rod bearing lower 21. Connecting rod bearing cap
22. Connecting rod bolt 23. Main bearing cap 24. Main bearing cap bolt
25. Crankshaft 26. Pilot converter (A/T or CVT models) 27. Signal plate
28. Rear oil seal 29. Drive plate (A/T or CVT models) 30. Reinforcement plate (A/T or CVT
models)
31. Flywheel (M/T models) 32. Block heater (Canada only) A. Refer to EM-203
Tool number : KV 11105210 (J-44716)
PBIC3226J
PBIC3227J
Revision: May 2010 2011 Versa
EM-230
< SERVICE INFORMATION >[MR18DE]
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and LimitINFOID:0000000005931036
GENERAL SPECIFICATIONS
DRIVE BELT
WATER CONTROL VALVE
EXHAUST MANIFOLD
Unit: mm (in)
THERMOSTAT
SPARK PLUG
Unit: mm (in)
*: Always check with the Parts Department for the latest parts information
CYLINDER HEAD
Engine type
MR18DE
Cylinder arrangement In-line 4
Displacement cm
3 (cu in)1,797 (109.65)
Bore and stroke mm (in) 84.0 x 81.1 (3.307 x 3.192)
Valve arrangement DOHC
Firing order 1-3-4-2
Number of piston rings Compression
2
Oil 1
Compression ratio 9.9
Compression pressure
kPa (bar, kg/cm
2, psi) / 250 rpm Standard
1,500 (15.0, 15.3, 217.6)
Minimum 1,200 (12.0, 12.2, 174)
Differential limit between cylinders 100 (1.0, 1.0, 15)
Tension of drive belt Auto adjustment by auto-tensioner
Valve opening temperature 93.5 - 96.5°C (200 - 206 °F)
Full-open valve lift amount 8 mm/ 108°C (0.315 in/ 226 °F)
Valve closing temperature More than 90°C (194 °F)
Items Limit
Surface distortion Each exhaust port
0.3 (0.012)
Entire part 0.7 (0.028)
Valve opening temperature 80.5 - 83.5°C (177 - 182 °F)
Full-open valve lift amount 8 mm/ 95°C (0.315 in/ 203° F)
Valve closing temperature More than 77°C (171 °F)
Make DENSO
Standard type* FXE20HR11
Spark plug gap Nominal: 1.1 (0.043)
Revision: May 2010 2011 Versa