••
GENERAL
DATA
(MINI-COOPER)
The following information is applicable to the Mini-Cooper and should
be
used in conjunction with the preceding
specification for the Mini Saloon.
•
ENGINE
Type
Number
of
cylinders
Bore
Stroke
Capacity
Compression ratio: High compression
Low compression
..
B.M.E.P.: High compression
Low compression
Torque: High compression
Low compression
CRANKSHAFT
Main bearings
Material
..
Length
..
Runt;ling clearance
CONNECTING
RODS
Big-end bearings
Material
Bearing length
..
PISTONS
Type
Clearance: Bottom
of
skirt (pressure face)
9F.
4.
2·458 in. (62,43 mm.).
3·20 in. (81,28 mm.).
60·87 cu. in. (997 c.c.).
9:1.
8·3 :
1.
134 lb./sq. in. (9,42 kg./cm.
2
)
at
3,500 r.p.m.
129 lb./sq. in. (9,07 kg./cm.
B
)
at
3,500 r.p.m.
54 lb. ft. (7,46 kg. m.)
at
3,600 r.p.m.
53
lb. ft. (7'32 kg. m.)
at
3,500 r.p.m.
Steel-backed copper-lead; thin wall.
1·0625 in. (26,99 mm.).
·001
to
·0027 in. (,025 to ·069 mm.).
Steel-backed copper-lead; thin wall.
·875 in. (22,22 mm.).
Solid skirt.
·0016 to ·0022 in. (,041 to ·056 mm.).
PISTON
RINGS
Compression: Top
Second
and
third
Width
Plain, chrome-faced.
Tapered.
·0615
to
·0625 in. (1'563
to
1·588 mm.).
,~
>fI'I'~
""
•
VALVES AND VALVE GEAR
Valves
Head diameter: Inlet
..
Exhaust
Throat
diameter: Inlet
Exhaust
Valve lift
Inlet valve: Opens
Closes
Exhaust valve: Opens
..
Closes
..
MINI. Issue
1.
4908
1·156 in. (29,4 mm.).
1'000 in. (25,40 mm.).
1·0312 in. (26'2 mm.).
·098 in. (23'06 mm.).
·312 in. (7,92 mm.).
16
0
B.T.D.c.]
. h
019'
(48
) I
56
0
A B D C
WIt·
m.'
mm'
va
ve
51
0
B:B:D:C: r,ocker clearance (for checking
210
A.T.D.C. purposes only). ,
General Data 9
mk1-performance-conversions.co.uk
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