Running Adjustments; Cylinder Head Nuts; Valve-Rocker Clearances ( Measured Cold); Ignition Timing - Triumph TR3 Instruction Book

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Various adjustments are necessary from time to time in order to maintain the

mechanism in good running order.

carrying out these adjustments since this is dependent upon the manner in

which the vehicle is used.

commended intervals between, are as follows.

After the first 1,000 miles check the cylinder head nuts for tightness

whilst the engine is hot, in the order shown on Fig. 24.

Set the inlet and exhaust valve-rocker clearances at 0.010". These

settings are correct for both normal and high speed running.

4° before Top Dead Centre (crankshaft angle).

Use only Premium grade fuels of 95 octane or higher and so long as the

engine is free from carbon, it will not pink. A substantial carbon build-up

may cause " pinking ". This will necessitate retarding the ignition slightly

so that " pinking " is just audible when pulling hard when the engine

speed is in excess of 1,500 r.p.m.

To advance ignition, rotate the knurled screw on the distributor. Each

division on the distributor vernier scale represents 2° on the distributor,

i.e. , 4° on the crankshaft.

The firing order is 1, 3, 4, 2.

RUNNING ADJUSTMENTS

The most important adjustments and the re-

Fig.

Order of tightening cylinder head nuts.

24.

No definite period can be stated for

ENGINE

3 1

SPORTS CAR

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