Renault CH-Type engine


The CH-Type was a 90° V6 engine developed by Renault-Gordini for Renault's autosport activities. This François Castaing design was the predecessor of the famous EF series.
In 1972, after an agreement was reached with Elf, François Castaing, technical director of Renault Gordini, was given the go-ahead to build a 2-litre engine that could be used in a "sports" model and then in Formula 2.
His team opted for a 90° V6, which was released in 1973 and was named the "type CH1" in honour of Claude Haardt, who had died in an accident a few months earlier.

Engines

CH1

1973-1977

@ 9,800 rpm, @ 10,500 rpm
This V6 engine with four overhead camshafts and four valves per cylinder would prove highly successful.
Its record reads as follows:
in 13 races.

1975-1978

@ 9,500 rpm
Used for the 1975 and 1976 World Championship for Makes and the 1977 and 1978 Le Mans 24 Hours, this engine fully accomplished its second goal, with:

1975-1978

/ @ 9,500 rpm
Taking full advantage of engine capacity regulations by extending the bore to while maintaining the same stroke of, this engine enabled the only Alpine A443 entered at Le Mans in 1978 to tire out the Porsches and help the Alpine A442 B to victory.