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Cylinder Head Service & Overhaul - e-Manual

In an air-cooled aero engine the cylinder heads are the components that need the most care and attention. Overall weight is an important factor in engine design, so manufacturers will endeavour to make the cylinder heads as light as possible commensurate with the ability for the engine to operate to TBO. However, if the engine is operated outside the limits then the heads will distort, compression will be lost and remedial action will have to be taken.

Dismantling the top end should be done in stages with a detailed visual inspection carried out between each stage. The purpose of the inspection is to identify any unusual wear or witness marks and the causes for such wear. Sometimes important clues can be lost once the head is dismantled and cleaned.

This e-manual is a step-by-step pictorial guide to assist owners in servicing and overhauling Jabiru cylinder heads. It should be used in conjunction with the Jabiru Technical Manuals. Readers can also refer to my e-manual ?Building the Jabiru Engine from the Crankshaft Up? for more information on removing and re-installing the cylinder heads.