Lotus Eleven/Elise/Exige. Manual - part 35

Page 15

 

 

Lotus Service Notes   

 

 

     Section EH

13.  Fit two engine lifting brackets T000T1437S to the left hand front and right hand rear of the cylinder head. 

Sling support the power unit before releasing the RH and LH engine mounting brackets. 

 17.  Carefully hoist the power unit from the car, whilst monitoring for any remaining connections.

 

Refit the unit in reverse order to removal with the following notes:

- 

Before re-fitting a driveshaft, first renew the round section circlip on the end of the left hand inboard joint 

spigot shaft, and lubricate the circlip with grease.  Also, check the condition of the transmission output seal, 

and renew if necessary.  Lubricate the lip of the seal with transmission oil, and grease the corresponding 

shoulder on the driveshaft (C.V. joint) spigot, to reduce the danger of damaging the seal on assembly.  

- 

Carefully insert the driveshaft into the transmission, with, on the left hand shaft, the two ends of the circlip 

positioned lowermost, and rotate the shaft if necessary to engage the splines.  Press the inboard joint outer 

until a click indicates the engagement of the retaining circlip, if necessary using a brass drift and hammer.  

Pull on the body to ensure its security.  On the right hand shaft, fit the bolts securing the extension shaft 

bearing to the engine mounted bracket, and torque to 64 Nm.

- 

Refer to section DH for rear suspension assembly details.

- 

For coolant refilling procedure, refer to section KH.

- 

For transmission details and gear cable adjustment, refer to section FJ.

EH.5 - SPECIAL TOOLS

 

The following engine special tools are available under Lotus part number:

Engine Lift Bracket           T000T1437S    2 off     

Bolt, engine lift bracket        T000T1440S     2 off

Oil Filter Wrench            T000T1441F     1 off

Valve Clearance Adjuster Set    T000T1442F     1 off

Crankshaft Pulley Holding Tool    T000T1443F     1 off

Flange Holding Tool          T000T1444F     1 off

    Engine lifting brackets

                                                                    

e229

 

 

Lotus Service Notes   

 

 

     Section EH

Page 16

EH.6 - ENGINE MANAGEMENT COMPONENT LOCATION - 2ZZ

Key to engine management component location drawing

1.  Electronic Control Unit (ECU).

2.  Multi-function relay unit.

3.  Oil control valve for variable valve lift.

4.  Camshaft position sensor.

5.  Fuel injector.

6.  Knock sensor.

7.  Oil control valve for variable valve timing.

8.  Crankshaft position sensor.

9.  Plug top coil.

10.  Coolant temperature sensor.

11.  Pre-catalyst oxygen sensor.

12.  Post-catalyst oxygen sensor.

13.  Oil pressure switch.

14.  Throttle position sensor.

15.  Vacuum solenoid for intake flap valve.

16.  Mass airflow sensor.

17.   Idle Air Control (IAC) valve (prior '06 M.Y.)

For component replacement procedures, refer to manual B120T0327J.  For diagnostic codes, refer to Section 

EMP.

        1

                          2 

                                           4

                                 3                               5 

   

                                                              6

 

     

               17                         

                                                                  7

        16

                                                                  8

   15

                             

                                                        9

  14

 

 

13 

 

 

 

 

 

 

 

   10

 

 

 

 

 

12 

 

       11   

 

 

 

Lotus Service Notes   

 

 

     Section EH

Page 17

EH.7- ELISE IZR SUPPLEMENT

The 1.6 litre Elise announced. in January 2010 replaces the 1.8 litre Elise S model, and uses the Toyota 

1ZR FAE engine, but controlled by a type T6 Lotus ECU (also used on Evora), programmed by Lotus.  This 

engine is similar in many respects to the 1ZZ and 2ZZ families  but is further optimised for fuel efficiency and 

meets Euro 5 emission standards   Features include Variable Valve Timing - intelligent (VVT-i) for both inlet 

and exhaust camshafts, in order to enhance power at both low and high engine speeds, and a VALVEMATIC 

system to vary the inlet valve lift in order to reduce pumping losses, minimise noxious emissions and optimise 

fuel economy   Engine throttling is controlled by a combination of inlet valve lift and a single butterfly valve at 

the inlet plenum intake

Other architectural features include a valve angle narrowed to 29° for a compact cylinder head, and a 

crankshaft/cylinder axis offset (désaxé) of 8mm to reduce piston side thrust on the power stroke.

Engine Sections

        From LH side                            From front

                                                               

1ZR

 

The Acoustic Control Induction System (ACIS), uses a bulkhead within the intake plenum to divide each 

of the four intake tracts into two sections.  For each tract, an intake air control valve under common control, 

provides either a long or short tract length dependent on engine speed and throttle opening.  This feature op-

timises power output at both low and high engine speed ranges.

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Page 18

 

 

Lotus Service Notes   

 

 

     Section EH

Engine Data:

Capacity 

 

 

1598 cm

3

 

Bore/stroke 

 

 

80.5 mm/78.5 mm

Power/torque:   

 

100 kW (136 PS, 134 hp) @ 6,800 rpm; 160 Nm (118 lbf.ft) @ 4400 rpm.

Combined fuel consumption: 

6.14 litres/100 km (46 mpg).

Exhaust emissions CO

2

:  

155 g/km

Engine management:   

Lotus T6 controller (as Evora) with Lotus programming.

Valve control:   

 

VVT-i variable timing of both inlet and exhaust cams;

 

 

 

 

VALVEMATIC variable lift system for the inlet valves.

Engine speed control:       Intake plenum throttling at low engine speeds; inlet valve lift and intake 

                      plenum throttling at high speeds.

Max. engine speed:        6800 rpm continuous; 7000 rpm transient.

Spark plugs:             Denso SC20HR11

Spark plug gap:           1.0 to 1.1mm

Compression   - std 

 

1373 kPa (14.0 kgf/cm2, 199 psi) or higher

  

 

- min   

1079 kPa (11.0 kgf/cm2, 156 psi)

 

 

- max. diff. 

98 kPa (1.0 kgf/cm2, 14.2 psi)

Notes

- Valve lift actuator driven off tail of inlet camshaft.  Vacuum pump driven off tail of exhaust camshaft to supply 

brake servo and engine management functions.

- Long reach M12 spark plugs requiring 14mm socket wrench.

- New 'clip-on' cosmetic engine cover.

- No requirement or provision for oil coolers.

- The engine number is stamped on the left hand 

front of the cylinder block, alongside the alternator, 

and is prefaced by ‘1ZR’. 

:2

5

  1ZR

  Engine 

  Number 

  

ohs176