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Hemispherical combustion chambers were in use on many car brands prior to WW1. Fiat, Peugeot etc,for competition cars. Riley hemi engines, between the wars, formed the basis for for another generation of serious competiton car engines, eg ERA, Alta, as well as providing Rileys themselves with almost unbeatable specific power outputs for Brooklands racing. .
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1986 924S bought new. Now used for AutoX and street.
Chipped, throttle cam, highflow filter in original airbox/snorkel, 14mm rear sway
Hyundai Ioniq hybrid daily driver
Vindicator Vulcan V8 spyder, street legal sports racing car
(300hp,1400 lbs kerb weight) used for sprints on circuits, and hillclimbs
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