The Transalpine Formation

A closer look at the SM’s Maserati-sourced V6 engine. 

Alfieri’s production SM unit. (c) citroen-sm.uk

Like most aspects of historical record, the story behind the development of Maserati’s 114-series 2760 cc V6 engine is dependent upon whose account one reads; the orthodoxy suggesting that the engine supplied to Citroën was a derivation of an existing Maserati V8 unit. However, its bespoke basis has been placed beyond doubt.

When the request from Paris came through, Maserati technical director, Giulio Alfieri took a pre-existing 4.2 litre 90° V8 unit from his workshops, and by effectively slicing two cylinders from the block, fashioned a 2.9 litre prototype engine. However, while the subsequent production engine may have shared the original unit’s included angle, it was in fact new from the ground-up and designed specifically to Continue reading “The Transalpine Formation”