ɪmpɹˈuːvd ˈɛndʒɪn bɹˈiːðɪŋ—zˈiːnɪθ dˈaʊndɹæft kˈɑːɹbjʊɹɹˌɛɾɚ, ɹᵻvˈaɪzd mˈænɪfˌoʊldz ænd kˈæmʃæft—ˈɔːl kəmbˈaɪnd tʊ ɪmpɹˈuːv ˈɛndʒɪn ˈaʊtpʊt tə θˈɜːɾi bˌiːˌeɪtʃpˈiː.
Improved engine breathing—Zenith downdraught carburettor, revised manifolds and camshaft—all combined to improve engine output to 30 bhp.