Triumph TR2 - Chassis Specification

GENERAL DATA
GENERAL DATA
Summaries of dimensions and tolerances,
relative to va9ous components are given at the
commencement of the respective sections to
which they refer. Whilst data given, in some
instances, in this section appears elsewhere
in
the body of this manual, such information being
frequently required, it is considered desirable
that it should be summarised in this section for
easy reference.
For the convenience of overseas readers, a
table of metric equivalents is included in this
section.
CHASSIS SPECIFICATION
Engine Details
Type ............
Bore of Cylinder ....
Stroke of Crank ....
Cubic Capacity
......
(Swept Volume)
Compression Ratio
......
Firing Order ......
Compression Pressure
(With three Spark-
ing Plugs fitted and
corn ression gauge
in
P ourth cylinder
engine warm, throt-
tle set at tick over,
using 20 SAE oil
and operating the
starter)
...... ......
Sparking Plug
..... Make and Type
Sparking Plug Reach
......
Sparking Plug Gap
Distributor
............
Distributor Break Gap
Ignition Settin
...... (FuU Retard?
O.H.V. Push Rod
Operated.
3.268" (83 mm.)
3.622" (92 mm.)
121.5 cu ins.
(1,991 c.cs.)
8.5
L3, 4Y2
Average reading
120 lbs. per sq. in.
(8.4
kgs. per sq.
cm.)
Champion No. LlOS
High speed work No.
L11S.
4'' (12.700 mm.)
.032" (.8 mm.)
Lucas DM2 P.4
.015" (.4 mm.)
4" B.T.D.C. (Rased
on the use of fuel
with a minimum Oc-
tane value of 80).
......
Vacuum Advance Basic setting 4 divi-
sions.
Inlet Rocker Clearance Touring
.010" (.25 mm.)
High Speed Motoring
.013" (.33 mm,)
Exhaust Rocker
Clear-
ance ..... ...... Touring
.012" (.30 mm.)
High Speed Motoring
.013" (.33
mm.)
The above measurements are based on a cold
engine.
Crankshaft ............ Three journal molyb-
denum manganese
steel stamping with
integral balance
weights.
Crankshaft Bearings
.... Vandervell bi-metal
shell bearings.
Crankshaft Thrust
...... F our half semi-
circular white metal
faced washers fitted
in pairs either side of
the centre bearing.
Connecting Rods
...... 60-ton molybdenum
manganese steel
stamping with big
end ca
S offset to
camshai! side.
Floating gudgeon pin
secured by circlips.
Connecting Rod Bear-
ings, Big End
...... Lead indim bronze
bearings.
Small End
............ Clevite Bush.
Pistons
...... ...... Aluminium alloy split
skirt compensatmg
type, graded F. G or
H.
Piston Rings
...... All fitted above gud-
geon pin.
Compression Rings Cast iron,
.062" wide.
Scraper
Ring ...... Cast iron, .156" wide.
......
Camshaft ...... Special cast iron with
four bear$gs and
dent contour syrn-
metrical cams.
Driven by Duplex
chain.