Since its first introduction in 1971 the FIAT 127 has undergone a continuing programme of improvements concerned mainly with styling and trim alterations. However, in 1977 a new model range was introduced which included the option of a larger engine of 1049 cc capacity with a single overhead camshaft. In appearance, cars in the new range are broadly similar to the earlier models but they have a lower bonnet line, larger glass area and redesigned bumpers.

In October 1978, the FIAT 127-Sport was launched. This is a high performance version of the three door hatchback having the 1049 cc engine with a twin choke carburettor. Apart from minor body styling changes, the Sport is equipped with a larger capacity sump, twin exhaust tailpipes, servo braking, additional instrumentation and a laminated windscreen.

This supplement has been added to cater for some of the production changes which have been made, but principally to cover the 1049 cc engine. The material given in Chapters 1 to 12 still applies unless superseded by information contained in this Supplement. Therefore, always read this Chapter in conjunction with the rest of the book.

Engine
1049 cc engine – general
1 This engine is of overhead camshaft design, using shims for valve clearance adjustment. The crankshaft is supported in five main bearings, the centre one incorporating the thrust washers which control crankshaft endfloat.
2 An auxiliary shaft, driven by the toothed camshaft belt, is used to drive the distributor and the fuel pump.
3 Most major engine components can be removed while the engine is in the car, but operations on the crankshaft, main bearings and flywheel can only be carried out after the engine has been removed.
4 Engine removal and subsequent dismantling follows closely the information given for the overhead valve engine in Chapter 1, but the following sequence for complete engine dismantling is recommended.

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