Lotus Elise S1 Service Notes page 522

Section XA
X A . 1 7 - LSL388
All LHD 340Rs were factory built with oil coolers. The following procedure outlines oil cooler fitment to a
RHD 340R, recommended for use on race tracks or in conjunction with the 340ps/tonne kit.
Fitting Procedure
1. Remove the body topshell (see sub-section 340R.B)
2. Replace the oil filter housing on the engine with the new housing which incorporates feed and return ports
for the oil cooler hoses. Fit the new oil filter Using a thread sealant, screw the new adaptor elbow into the
tapped hole on the underside of the housing, and fit the new brown bodied oil pressure switch into the
elbow (note that the new switch is taper thread, old switch parallel thread).
3. Cut a pair of 32mm diameter holes for the cooler hoses in the right hand outer wall of the radiator duct,
just ahead of the engine coolant hose aperture, and another corresponding pair of holes in the rad. duct
4. Position the oil cooler in the intake air duct, approx. 50 mm behind the towing strut. Mark up the fixing
holes in the floor of the duct, and drill M6 clearance holes. Mount the cooler using the M6 fixing screws
and washers, with the pillar nuts between the duct floor and cooler.
5. Connect the cooler hoses to the oil filter housing, with the 45° return hose union fitted to the housing right
hand port, and the swept 90° union on the feed hose connected to the left hand port. Take care to route
the feed hose, with its heat protective sleeving, away from the exhaust downpipe, and secure to the water
rail at the front of the engine bay. Route both hoses against the bulkhead, outboard of the fuel filler hose,
and through the engine bay RH air intake aperture (on some early cars, it may be necessary to cut an
aperture in the side closing panel). Ensure that both hoses are fitted with convolute protective sleeving in
vulnerable areas, especially through the air intake aperture.
6. Route the hoses against the upper part of the cockpit closing panel, beneath the coaming, and secure
with 'P* clips, positioning the clips to allow access to the topshell fixing studs. Continue routing against the
windscreen buttress and RH top rear corner of the radiator duct, clipping as required. Take care not to
inhibit topshell fitment or headlamp access. Feed the hoses through the air duct holes, and fit the
grommets. Connect to the oil cooler, using two spanners to prevent the cooler unions being twisted.
7. Disable the ignition low tension and crank the engine to fill the oil cooler and hoses before starting the
engine. Top up oil level if required. Run engine and check for leaks before refitting the topshell.
Recommended Fitting Time
6 hrs (including topshell remove/refit)
Kit Contents:
Oil Cooler
Oil Filter Housing
Gasket, oil filter housing
Oil Filter
90° Connector, oil pressure switch
Oil Pressure Switch
Hose, oil cooler feed
Hose, oil cooler return
Grommet, cooler hose
Pillar Nut, M6, oil cooler mounting
Setscrew, M6x12, oil cooler fix
Washer, flat, M6
'P' Clip, open, cooler hose fix
Pop Rivet, 'P' clip
A340E6025F
A111E6146F
A111E6101F
A111E6038S
A111E6147F
A111E6099S
A340E0036F
A340E6020F
B111G6012F 4
A340E0034F 4
A000Z7043F 8
A 0 7 5 W 4 0 1 3 F 8
A075W6229F 8
A 0 7 5 W 6 0 8 7 F 8
inner wall.
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