BMW Mini-Cooper 1968 - Valve Springs; Fuel System

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GENERAL DATA-continued
(M I NI· COO PER - con tin u e d)
VALVES AND VALVE GEAR
Valves
Throat diameter: Inlet
Exhaust
Head diameter: Inlet ..
Exhaust
Valve
lift
Inlet valve: Opens
Closes
Exhaust valve: Opens ..
Closes ..
1·172 in. (29,77 mm.).
·908 in. (23,06 mm.).
1·219 in. (30,86 mm.).
1·00 in. (25,4 mm.).
·312 in. (7,92 mm.).
5° B.T.D.C.
45° A.B.D.C.
51 ° B.B.D.C.
21 ° A.T.D.C.
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VALVE SPRINGS
Free length: Inner
Outer
Pressure: Inner: Valve closed
Valve open
Outer: Valve closed
Valve open
1·672 in. (42,47 mm.).
1·75 in. (44,45 mm.).
18 lb. (8'17 kg.).
30 lb. (13,6 kg.).
55! lb. (25,13 kg.).
88 lb. (39'9 kg.).
FUEL SYSTEM
Carburetter
Needle
Spring
.,
Standard GY.
Blue.
Lucas HA12.
3·1 to 3·5 ohms (cold). .'1:
Lucas 24D4.
40955A.
5° B.T.D.C. (premium fuel).
5° B.T.D.C. (91 to 96 octane [Research Method] fuen~
7° B.T.D.C. at 600 f.p.m.
500 f.p.m.
30° to 40° at 6,600 r.p.m.
3 in. (7 ·62 cm.) Hg.
8 in. (20,32 cm.) Hg.
30° to 34° at 6,600 f.p.m.
20° to 24° at 4,000 f.p.m.
12° to 16° at 1,800 f.p.m.
1° to 5° at 600 r.p.m.
* Crankshaft degrees and f.p.m.
IGNITION SYSTEM
Coil
Resistance
at 20° C. (68° F.) primary winding
Distributor
Serial
number ..
Static ignition timing: High compression
Low compression
Stroboscopic ignition timing* ..
Automatic advance commences*
Maximum advance*
..
Vacuum advance: Commences
Ends
Decelerating check*
..
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MINI. Issue 1. 4908
General
Data 13-
mk1-performance-conversions.co.uk