Lamborghini P400 Miura - Automobili Ferruccio Lamborghini S. Agata Bolognese (Bo)
HANDBOOK - Note
The technical concept behind the design and manufacture of the P400
Miura needs to be backed by the driver's good knowledge of and
compliance with all the driving and maintenance instructions as
outlined in the present handbook. If the exceptional performance of
which this car is capable is to be achieved.
It is therefore advisable to consult this handbook not only when
specific adjustment or maintenance operations have to be carried out on
the vehicle, but also for the purpose of getting to know better the
technical and operational data of the car.
For all tuning and maintenance work that the driver cannot carry
out personally it is advisable to contact the Manufacturers or an
The use of original spare parts is a guarantee of satisfactory
operation and long life.
Our Technical Service Department is entirely at your service for
explanations and advise on all queries that you may wish to put to us.
CAPACITIES Water (engine - radiator) - 15
liters - (Imp. gall. - 3.30 - U.S.A.
gall. - 4.00) Fuel
- 88 liters - (Imp. gall. - 19.35 -
U.S.A. gall. - 23.25)
- 12.5 liters - (Imp. gall. - 2.75 - U.S.A. gall. - 3.30) Fuel Only Super or Premium petrol with an Octane N. 98/100 (RM) should
be used. The fuel filler cap is accessible behind the right-hand grill
of the bonnet. Lift the grill to open. Oil Check oil level with dipstick and top up if necessary, using
exactly the same oil as already in the sump, and no other. Water Fill the water tank and bleed air from the cooling system
unscrewing the bleed screw at the top left corner of the radiator;
tighten bleed screw, top up tank, start engine and run it for ten
seconds; bleed air once again and top up if necessary. When wishing to
check the water level when engine is hot, the filler cap must be
covered with a cloth, for protection, and released by 1/4 turn only,
thus releasing internal pressure. If a lot of water is required, this
should be added very slowly with the engine running at a slow idling
IDENTIFICATION Chassis identification N.:
LAMBORGHINI P400 MIURA
on the chassis front cross member.
Engine identification N.:
Stamped on the cylinder block between the cylinder heads.
The vehicle indentification numbers are also shown on a plate mounted
on the chassis, near the front right wheel arch. GENERAL DATA
Engine Number of cylinders...................12
Cylinder arrangement................. 60° V
Bore.......................................... 82 mm
Stroke....................................... 62 mm
Cubic capacity........................... 3929 c.c.
Compression ratio..................... 1:9.5
Max. power at 7000 r.p.m......... 350 HP (DIN)
Fiscal power (for Italian road tax purposes) - 47
Vehicle Wheelbase................................ 2504 mm
Overall length ........................... 4360 mm
Overall width............................ 1780 mm
Ground clearance (laden).......... 130mm
Overall height (laden)................ 1080 mm
Front track .............................. 1412 mm
Rear track ............................... 4'7-3/4" abt.
Turning circle............................ 11.20 m
Unladen weight ........................ 980 kg.
Laden weight including two....... 1250 kg.
Standard (cuna formula) fuel.. 17 liters
consumption per 100Km (62 Imp. gall. 3.85
miles).............................. U.S.A. gall. 4.60
Normal oil consumption
per 1.5 kg.
1000 km. ...........................
Max speed .............................. 300 k.P.H.
186 st. miles
Number of seats....................... 2
Tyre size (front and rear).......... 210 x 15
Electrical equipment ................ 12 Volts
Negative earth RUNNING INSTRUCTIONS Engine Oil Change During initial running-in the oil should bre changed at the
1st oil change at 1000 Km. (600 st.miles)
2nd oil change at 5000 Km. (3000 st.miles)
Check-list Before starting up check the following items:
1. Water level in radiator tank
2. Engine oil level
3. Tyre pressure and wear
STARTING UP Before starting the engine:
- make sure the gear lever is in neutral.
- insert ignition key and turn it clockwise to operate the starter.
- for easier starting the clutch pedal should be fully depressed.
During the cold season the mixture can be enriched by depressing the
accelerator pedal with pumping action.
Do not accelerate when cold, as the oil may not be reaching in
sufficent quantity all points requiring lubrication and cause damage to
the various parts.
Make sure that the oil pressure when hot and with engine idling at
900/1000 RPM is at least 1 to 1.5 atms.
If engine fails to start the cause may be one of the following:
- low battery charge
- faulty electrical equipment (dirty plugs, faulty
LAMBORGHINI P 400 MIURA
INTERNAL LAYOUT AND CONTROLS
1 REAR BONNET CATCHES
2 FRESH AIR OUTLETS
4 STEERING WHEEL
6 ODOMETER ZERO CONTROL
7 FRONT BONNET CATCHES
8 HEATER UNIT WATER VALVE
9 DIRECTIONAL INDICATOR LIGHT DIPPER
10 CLUTCH PEDAL
11 BRAKE PEDAL
12 ACCELERATOR PEDAL
13 SCREEN DEMISTER VALVE
14 HEATER AIR OUTLET
15 POSTION LIGHTS
16 HIGH BEAM LIGHT
17 SECONDARY WATER RADIATOR
18 ALTERNATOR WARNING LIGHT
19 FOG LIGHT WARNING LIGHT
20 IGNITION SWITCH
21 LIGHT SWITCH
22 SECONDARY RADIATOR FAN SWITCH
23 FOG LIGHT SWITCH
24 INTERIOR HEATER BLOWER SWITCH
25 PANEL LIGHT SWITCH
26 INTERIOR LIGHT SWITCH
27 WATER TEMPERATURE
28 OIL TEMPERATURE
29 OIL PRESSURE
30 FUEL LEVEL
33 CLOCK SETTING SWITCH
34 GEAR LEVER
35 WINDSCREEN WIPER & WASHER SWITCH
36 RESERVE GEAR LOCK
37 CIGAR LIGHTER
38 HEADLIGHT RAISING SWITCH
39 HANDBRAKE LEVER
ignition coils, fouled distributor contacts or wrong breaker gaps.)
- short in wiring system
- clogged slow-running jets
- faulty fuel pump. When driving - Do not run the engine faster than the advised max. revs.
(7500) in any gear.
- Check the oil pressure gauge frequently and switch off the engine if
the pressure at max. revs., when oil is hot, drops below 5 atm.
- Do not depress the accelerator pedal fully until the oil has reached
a temperature of 60° C. (140°F)
- Do not travel with the foot resting on the clutch pedal. Winter season If the temperature drops below 0°C (32°F) antifreeze should
be used in the cooling system to prevent the water from freezing in the
radiator and the engine during prolonged stops. Summer ventilation Air is drawn form the outside and directed into the car by means of
the specially provided air outlets.
As both fresh air ducts are in fact ram air intakes, during slow town
driving the circulation of fresh air can be increased with the electric
blower. See switch. Winter heating Fresh air can be heated by passing it through a hot water matrix.
For this purpose open the water tap located on the left hand side under
the dashboard. Hot water will circulate in the matrix and warm the
fresh air, which will be issued through the outlets in the car as
before. Warm air can be directed to the windscreen when demist position
is selected with the heater control lever. During slow running switch
the booster. Seat adjustment
The seat position can be adjusted for distance operating the lever
provided for this purpose under each seat. Windscreen wiper the twin speed wiper is operated by the switch on the transmission
tunnel, controling also the windscreen washer. Front bonnet - to open The front bonnet is hinged at the front and therefore opens against
the direction of travel. To open push the levers under the dashboard.
Before starting the engine make sure the levers are in the locked
position. Rear or engine bonnet - to open
To open pull the two levers near the door strikers on the chassis.
Before shutting the doors make sure the engine bonnet is properly
locked. Use of jack
The car can be lifted with the jack, which must be fitted into the
jacking plates just ahead of the rear wheels arches. Before jacking
make sure the handbrake is applied. Washing the car
The car should be washed by experienced staff so as not to damage the
paintwork. Do not wash the car in the sun or when the body panels are
hot. Wash with plenty of clean water and dry with chamois-leather. Do
not use synthetic detergents or soaps in the water.
Every so often the bodywork can be treated with car polish. After
washing, the car should be driven slowly and the brakes applied lightly
and repeatedly to dry the brakes. Lubrication
Every 500 Km. (300 st.miles)
1) Check oil level in the sump. Every 5000 Km. 3,000 st.miles
1) Change engine oil and oil filter.
2) Lubricate with grease the half-shafts.
3) Lubricate with grease the steering box. Every 20000 Km. (12,000 st.miles)
1) Lubricate with grease the wheels hubs. ENGINE The engine is pressure lubricated by a gear type oil pump driven
by the crankshaft. The oil flows through the filter and into the
crankcase. Oil level must always be within the max. and min. marks on
the dipstick. The oil level should be measured with the car stationary
on level ground. The oil filter element needs changing every 5000 Km
After changing the oil filter element check that there are no oil
leaks from around the sealing face of the filter body. Oil pressure is
controlled by a valve in the oil pump.
For good lubrication, the oil pressure should be within the pressures
quoted in the table below:
Draining used oil a) This operation should be carried out when hot. It is therefore
advisable to run the engine for a few minutes to warm up the oil.
b) Open oil drain taps on engine sump and gearbox casing.
c) Remove filter and replace element.
Filling with fresh oil The oil filler cap is on the off-side of the engine.
BP HD motor oil SAE 50
BP Energrease L 21 M
Wheel bushes and
BP Energrease LS 3
BP Energrease L 21 M
Once again it is stressed, never to use oil of different
brand or type when topping up the engine oil. MAINTENANCE
Periodical maintenance Before using the car:
1) Check water level in radiator tank.
2) Check oil level in sump
3) Check tyre pressure Every 500 Km. (300 st.miles)
4) Check water level in radiator tank
5) Check tyre pressure Every 2500 Km. (1,500 st.miles)
6) Check battery electrolite level
7) Check clutch pedal free travel
8) Check fluid level in brake master cylinder reservoir
9) Check fluid level in clutch master cylinder reservoir Every 5000 Km. (3,000 st.miles)
10) Check alternator belt tension
11) Check brake pedal free travel
12) Change wheels around and note tyre wear.
13) Check, clean and adjust distributor contacts
14) Check clutch free play
15) Adjust handbrake Every 10000 Km. (6,000 st.miles)
17) Check wheel toe-in and camber angle
18) Check carburetter slow-running and adjust the linkage for total
throttle valve aperture
19) Check disc pad wear
20) Replace spark plugs
21) clean air filters Every 20000 Km. (12,000 st.miles)
22) Check clutch plate wear
23) Check valve clearances
24) Check steering free play
25) Clean out fuel filters and replace filter cartridges ENGINE MAINTENANCE
The two cylinder heads are inclined at 60° giving the engine a V
shaped configuration. The valves are directly operated by a camshaft
for each line of valves, with interposed spring cups and pads for valve
clearance adjustment. Valve Timing
Valve clearance inlet
0.25 mm (.0984")
(when cold) exhaust Timing system Engine timing:
The engine is correctly timed when:
a) Piston N. 1 of N/S cylinder block is at T.D.C. of compression
stroke, and in this condition the point on the flywheel marked PMS N. 1
(T.D.C. N. 1) coincides with the arrow marked on the flywheel
b) The reference mark on each camshaft coincides with the corresponding
mark on the front camshaft support.
Timing is independent on the two cylinder heads. On each side it is
driven by the crankshaft via two reduction gears and double chain.
To adjust timing chain tension, slacken and remove nut from adjuster,
remove cover plate and withdraw dowel: it is now possible to turn the
adjusting cam in the required direction until the correct chain tension
is obtained. Fit dowel into the seat where the holes coincide. Attention: Over-tightening of the timing chains will cause
damage and eventual failure to the reduction gear bearing and timing
Fuel is delivered from the tank to the carburettors by a 12 volts
Bendix fuel pump of the " Red Head" type. Fuel filters are fitted
1) At the end of the suction pipe in the tank.
2) in the pump
3) in the line between the pump and the carburettors.
Failure in delivery may be caused by
a) fault or inoperative pump.
b) clogged filters
There are four (4) triple choke Weber 40 IDL - 3C carburettors, having
the following settings:
- Centre resetting assembly.............4.5
- Running jet...................................125
- Slow-running jet...........................55
- Well.............................................F 26
- Air brake screw............................180
- Pump jet.......................................50
- Pump delivery...............................50
- Pump stroke.................................1/3
- Float.............................................25.5 grams
- Air brake screw: open...................2 turns Carburettor setting
Setting as supplied by the manufacturers should never be altered. In
the event of uneven firing on deceleration, or at low speed under light
load, clean the slow-running jets with air. These can easily be
recognized as they are painted red. Air filters
Each carburettor is provided with air filter. There is a single filter
element on each bank of carburettors. The element is housed in a casing
and is easily aaccessible by unscrewing the three retaining knobs, or
releasing the 2 catches and removing the complete filter unit. Maintenance
Every 5000 Km. (3,000 st.miles)
Clean the filter. Wash the filter with petrol and blow it out with
compressed air directed from the inside to the outside. Before
replacing the element it should be slightly wetted with engine oil. Warning : never run the engine with the air filter removed.
not only to maintain good mixture adjustment but above all to prevent
corrosive matter from getting to the cylinder bores and piston rings.
The manufacturers do not accept any responsability when this warning is
Ignition Ignition is by battery and two ignition distributors, one for each
bank of cylinders, and two ignition coils. Each distributor is equipped
with an automatic advance device. Firing order Cylinder 1 - 4 - 2 - 6 - 3 - 5 on each bank. Cylinder 1S (left N.
1) should have ignition when marking ASNI coincides with the arrow on
the bell housing. When marking ADNI coincides with the arrow, ignition
should be to the right hand cylinder N. 1.
4 Direction of travel
PMSI (TDC N. 1)
Static advance ADNI
N.1 right bank
N.1 left bank
Type S 85 B 12 V with anticlockwise rotation
22° + 19° Distributor contact gap With contacts fully open the maximum gap is .35 + .05 mm.
(.01377" + .00196").
this gap can be adjusted when necessary by means of a locking screw and
cam provided for this purpose. Contacts should always be clean; if
necessary they can be cleaned with a very fine file.
MAINTENANCE AND ROUTINE CHECKS Ignition timing
Right hand cylinder bank ignition distributor a) Remove the distributor cap and chek that the contacts open with
a gap of .35 + .05 mm. (.01377" + .00196").
If the timing has to be adjusted proceed as follows:
a) Slacken the nuts holding the distributor mounting flange to the
b) Turn distributor body clockwise to advance and anticlockwise to
c) Tighten the three retianing nuts, making sure the distributor does
not move during this operation. Timing adjustment after dismantling
Remove the distributor cap and turn the spindle by hand until the rotor
brush coincides with the contact for cylinder N. 1.
Check that the contacts are about to break.
If no adjustment was made in the driving sleeve, fit the distributor on
its mounting, making sure that the fixing bolts are halfway in the
mounting flange slotted holes. Replace the nuts but do not tighten.
Check timing as stated previously, turning the distibutor body
clockwise or anticlockwise, and finally tighten the locknuts. Spark plugs
Every 5000 Km. (3,000 st.miles) clean spark plugs and check plug gap
(.35 mm); if the gap is greater it should be set to the correct
Every 10000 Km. (6,000 st.miles) spark plugs should be changed.
The recommended spark plugs are Bosch 250P, or any other of equivalent
thermal rating and quality. Cooling
The cooling system consists of water pump, piping , thermostat, filler
tank, radiator, fan. Water pump
Centrifugal, driven by crankshaft. Thermostat
It is fitted into the circuit and set so as to allow the optimum water
temperature into the engine at all times. Filler tank (radiator tank)
This tank increases the capacity of the system, ensures water
circulation within the cylinder heads and enables easier filling and
topping up. Radiator
Every 500 Km. (300 st.miles) check water level and top up, if
necessary, with water (not limewater or hard water). If water
consumption is too great, check tightness of filler cap on the tank.
The system is pressurized at .8 Kg. per sq.cm. If the water level must
be checked when hot, the filler cap should be turned only by 1/4 of a
turn to release internal pressure, using a piece of cloth as protection
against escaping steam; after this the cap can be removed.
Check that excessive deposits do not foul the cooling system.
If necessary suitable solutions can be used to de-scale lime deposits,
proceeding as follows:
- Fill the system with the right mixture of water and descaling
- Run the eingine for ten minutes.
- Drain the system from the drain tap on the radiator.
- Fill the system with water only, and flush it with the engine running.
- Drain water and fill the system with pure water as recommended. Water fans
Behind the radiators there are two independently operated motor driven
One is automatically operated by the thermostat, while the other can be
switched on with the manual control switch on the panel. Note
When traveling in town, heavy lane traffic, or at any time there is no
ram air on the radiator, it is advisable to switch on the second fan
immediately, to avoid reaching high temperatures, without waiting for
the water temperature warning light.
1st speed 1 : 2.52
2nd speed 1: 1.735
3rd speed 1: 1.225
4th speed 1: 1
5th speed 1: 0.815
Reverse 1: 2.765 Clutch
Single dry plate, hydraulically operated. The clutch hydraulic system
comprises a master cylinder - operated by the clutch pedal - a fluid
reservoir and a slave cylinder acting on the thrust bearing via a relay
linkage. Clutch adjustment
- The pedal should have a free travel of 10-15 mm.
- Every 5000 Km.(3,000 st.miles) adjust the pedal free travel with the
adjuster provided on the side of the clutch bell housing. Differential
The crown and pinion normally used are the 11/45.
Final drive ratios gearbox - differential
1 : 10.60
1 : 7.08
3rd 1 :
1 : 4.08
1 : 3.33
Reverse 1 : 11.32 Front suspension
Independent front wheel suspension with double wishbones, helical
springs, telescopic shock absorbers and stabilizer bar. Rear suspension
Independent rear wheel suspension with upper wishbone, inverted lower
wishbone with tie rod, helical springs, telescopic hydraulic shock
absorbers and stabilizer bar.
Every 20000 Km (12,000 st.miles) check the "silent block" bushes in the
wishbones for wear and efficiency.
Every 25000 Km (15,000 st.miles) check the shock absorbers for
efficiency. Steering system
The steering box is of the rack and pinion type, requiring greasing
every 10000 Km (6,000 st.mil.). Suspension Alignment Every 15000 Km.(9,000 st.miles) check front and rear wheel camber
and toe-in, necessary for good roadholding and even wear of the tyres. How to check wheel alignment
- Car under static load conditions, complete with fuel, oil, and water.
- Service tools required: camber measuring gauge and toe-in gauge.
Toe-in adjustment a) Park the car with front wheels facing foward;
b) Check that the two reference marks on the rack housing and spindle
c) Adjust the steering tie-rods until correct figure is obtained.
Camber - adjustment a) Jack up the front of the car;
b) Remove the wheels;
c) Slacken the four nuts locating the end of the top swivel pin to the
top arm and adjust as necessary along the slotted adjusting holes.
Tighten the four nuts and check if adjustment was accurately carried
The braking system consists of :
- Disc brakes on all four wheels with hydraulic control.
- Two independent hydraulic systems for front and rear wheels.
- Pressue increase valve on rear brake circuit.
- Mechanically operated handbrake on the rear wheels. Hydraulics Every 5000 Km.(3,000 st.miles) check fluid level in the two master
cylinder reservoirs. The level must not be allowed to drop below the
minimum mark. In the event of loss of fluid, top up the reservoirs and
inspect the entire system for leaks.
Use Castrol Girling Brake Fluid Amber.
Remember never to use the aired fluid. Use sealed containers.
Maximum care must be paid when topping up the reservoir to make sure
that drops of fluid do not come into contact with the paintwork, where
it would cause irrevocable damage owing to its high corrosive quality. Bleeding air from the circuit
This operation requires two people, a clear glass container fitted with
a hook for hanging it to the brake caliper and a plastic hose with 6mm
(1/4"abt.) internal diameter.
1) Check that brake fluid reservoirs are full. Remember that the fluid
levels in the reservoirs should never drop by more than 1/4 and keep
reservoirs well closed with plug provided.
2) Front calipers - insert one end of the plastic hose on to
caliper bleed screw and the other end into the glass container. Depress
the brake pedal a few times keeping it fully depresed at the end of the
last stroke. Slacken bleed screw and let out fluid mixed with air.
Tighten bleed screw and allow brake pedal to return slowly to its
normal position. Repeat the above proceedure several times if
necessary, until the fluid coming out of the plastic hose is free from
3) Carry out this operation on the rear wheels.
4) After bleeding the brakes, check the brake fluid level and top up if
5) Check that the circuit does not leak anywhere and drive for a few
miles using the brakes several times.
6) Repeat once again the brake bleeding operation as above. Brake pads
The recommended brake pads are:
- Front brakes - FREN-DO FD 312
- Rear brakes - FREN-DO FD 312
They should be replaced when reduced to less than 4 mm. in thickness.
It is advisable to replace all brake pads at the same time. Note
If pad wear is not even, check the surface and axial alignment of the
brake discs (this operation should be carried out by an appointed
In the event of uneven braking distribution, the system should be bleed
once more exercising maximum care.
If this does not fully rectify the fault, check pad wear conditions and
also the tightness rubber seals and slave cylinder sealing rings (all
seal replacements must be carried out by an appointed garage). Wheels
The wheels are dynamically balanced by special balancing weights. Every
now and then check that the balancing weights are in there
place.Unbalanced wheels produce uneven tyre wear but also severe
fouling of the steering gear and seriously impair the stability of the
Every 20000 Km (12,000 st.miles) dismantle, clean and repack with
grease the wheel hub bearings.
For good performance, comfortable ride and safe traveling the tyre
pressure should be as shown in the table below: Pirelli 210 - 15
The right pressure gives the best use of the whole tread with even and
more limited wear. Excessive pressure reduces ride comfort, gives extra
wear of the tread in the centre of the tyre and consequently reduces
Insufficient pressure causes the tyre to overheat which is dangerous as
bits of tyre may become detached and fly off.
On top of this, the wrong tyre pressure affects the stability and
roadholding of the vehicle. It is recommended to drive reasonably
slowly with new tyres for 800 Km. (500 st.miles) as this also affects
the stability of the car.
Every 5000 Km. (3,000 st.miles) change over the tyres diagonally.
Automobili Ferruccio Lamborghini s.p.a.
40019 S. Agata Bolognese (Bologna) Italy
Tel. 829171 - 829172
printed in Italy - Tip.
Commercio - Bologna www.huskyclub.com/P400partslist.html
This manual is in its original form! NO corrections have been
made! No errors corrected or spelling corrected or punctuation
Most likely i have introduced new errors. Will somebody check this word
for word against their manual please? thanks http://www.huskyclub.com/P400partslist.html
Dear Jack: I just spoke with Gary a minute ago. Here is the information for my car. I explained that the car has been rebuilt, and is now modified into a split sump. Here is some basic information that Gary advised Oil filter - Baldwin P162 12 liters of oil (Kendall Racing 20-50) or others. 4 liters in the gearbox. 90 weight GL5 or higher rating. Plugs NGK - B6EV (platinum tip) + Champion N6 + other plugs. FWIW: I recently replaced with Delco Rapid Fire. Thank you Gary, for the information and time provided !! Cheers Ralph ------------------- Hi Ralph, Give Gary Bobileff a call and tell him I recommeded you. You can reach him at 858-622-1600. I believe Gary will be glad to help with the information you need. Just be ready to tell him which year, model, serial number, etc. of Miura you have. Good Luck, Jack ------------------- Original Message From: ralfabco To: VintageLambo@yahoogroups.com Sent: Thursday, March 16, 2006 11:41 AM Subject: [VintageLambo] Re: I want to do some routine maintainance on the Miura No. I do not do a thing, but stand by and watch. The engine has been rebuilt, and now has the split sump. I just wanted advice from experienced owners, to pass this information along to the mechanic. That is all that I am looking for. Cheers Ralph #3096 Early P400
Hi Ralph,For what it's worth, the Baldwin filters are readily available
though any truck parts outlet. The P162 is used on several models and is
relatively inexpensive. Try doing a search on the VLG home page for Baldwin Oil
Filters and see what you come up with. We have discussed this topic a lot in the
past. Glad Gary could help you. Jack Dear Jack: FWIW I also got a cross-refrence of a WIX # 51125, from O'Reilly. Cheers Ralph
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