Pas de prix , et il faut passer par un lotus dealer pour pouvoir l'installer :-/
Autre chose , est ce que je vais conserver mon bruit si atypique au ralenti ???
Number:
2003/14 SERVICE Date: 28.07.03
BULLETIN Model: 'Mk.1' Elise 160
Service Manager Service Reception Supervisor Parts Manager
TITLE: Availability of Elise Mk.1 Sport 160 upgrade kit.
REASON: To improve idle quality and low speed driveability.
The concept of the Mk.1 Elise Sport 160 model was to use a high performance engine specification
in conjunction with sport suspension and was aimed at customers who enjoy 'track days' and
similar usage. The engine characteristics require that high rpm and full use of the gearbox are
employed to extract full performance. Idle quality and low speed running are compromised.
Continuous monitoring of customer feedback has resulted in the development of an upgrade kit to
the WVTA Mk.1 Elise 160/Sport 160 (using the EFI controller) in order to improve idle quality and
low speed driveability whilst retaining the original power output.
ACTION: Parts Required
Upgrade Kit, Sport 160 A111E0084S
comprising:
Toothed Pulley, exhaust camshaft A111E0082S
Throttle Body, 52mm A117E6090S
ECM, exchange A111E0083S
(Parts may be ordered individually if required)
112° Exhaust Camshaft Pulley
The standard engine exhaust cam timing is 102° BTDC maximum opening point. The modified
pulley allows the exhaust cam timing to be advanced by 10° to 112° BTDC MOP. Partly as a result
of the reduced valve overlap, idle quality, low speed running and exhaust emissions are all improved,
whilst the larger throttle body (increased from 48 to 52 mm) and revised calibration maintain
full power output.
1. Remove the RH rear wheelarch liner and timing belt top cover.
2. Turn the engine to align the timing mark on the crankshaft front pulley with the 'safe' position 90°
ATDC mark (12 O'clock) on the timing belt lower cover. Note that the TDC marking on the front
cover is erroneous and redundant. Check that the camshaft pulley timing marks are aligned
towards each other; if not, turn the crankshaft a further 360°.
Note: The following procedure refers to engines fitted with automatic belt tensioners. For
manual belt tensioners, refer to Rover engine supplement in Service Notes manual.
3. Slacken the belt tensioner clamp bolt, and remove tension from the cam belt.
4. Use special tool T000T1280 to hold the exhaust camshaft pulley and release the retaining bolt.
Withdraw the pulley from the camshaft and timing belt.
5. Fit the new pulley to the camshaft, locating the dowel in the new pulley slot as shown in the
diagram. Use special tool T000T1280 to hold the pulley and tighten the M10 retaining bolt to 65
Nm.
6. Turn the exhaust camshaft forwards (clockwise viewed from front) by 5° to align the new pulley
timing mark with the inlet pulley 'INLET' mark, and slip the belt onto the pulleys ensuring that the
drive side of the belt is tight and the crankshaft pulley is still positioned at the 90° ATDC mark.
Lotus Cars Limited, Norwich, Norfolk, NR14 8EZ. England. Telephone 01953 608000. Telefax 01953 608514
CLASS 3
7. Using a 6mm hex. key, rotate the tensioner counterclockwise and align the centre of the indent on
the tensioner pointer with the index wire ensuring that the pointer approaches the index wire from
above. If the pointer passes the wire, release the tension completely and repeat the procedure.
8. Ensuring that the pointer does not move, tighten the tensioner bolt to 25 Nm.
9. Using the crankshaft pulley bolt, slowly turn the crankshaft 2 turns clockwise to check there is no
valve/piston contact, and re-align the timing marks without having to 'back up'. Check that the
tensioner pointer is still correctly aligned with the index wire. If not, slacken the tensioner bolt until
it is just possible to move the lever clockwise, and position the pointer just above the index wire.
Continue with operation (7).
10. Refit the belt guard and wheelarch liner.
Throttle Body
1. Disconnect the air intake hose, idle air control valve hose and cam cover breather hose from the
throttle body.
2. Unplug the throttle position switch and release the throttle cable from the abutment bracket and
quadrant.
3. Remove the four screws securing the throttle body to the plenum, and withdraw the throttle body.
4. Fit the new throttle body and connect hoses, throttle position switch and throttle cable.
5. Adjust the throttle cable for minimum slack and check that full throttle can be achieved WITHOUT
straining the cable - adjust pedal downstop if necessary (refer to Service Notes section JH.
.Exchange ECM
Replace the existing ECM with the exchange item, and return old unit for surcharge credit.
Road test the vehicle and allow idle to be learned.
Fitting guide time 4.0 hr.
sb_160 upgrade
New timing mark
New exhaust cam
pulley
x25a
Dowel in new pulley slot
Page 2 of S/B 2003/14
) mais ça viens de paire avec le comportment peu civilisé à bas régime