by Zbigniew Grochowski, which were published in "Mały Modelarz" model-makers’ magazine in 1961. Aftermath Work on the S-16 engine continued, and at least another similar engine (code-named S-17) was built, with a modified engine block and custom-built cylinders and heads (different from those from the Junak S-03 engine). All development of this engine was abandoned with the introduction of the new three-cylinder in-line two-stroke S-31 engine for Syrena. The prototype of the S-17 engine has been preserved until our times at the Oldtimer Museum in Otrębusy near Warsaw. A prototype of the modified Syrena sedan designated "104" was presented in 1961. Among a number of modifications was the independent rear suspension, identical with that from Syrena Sport. This modified car was in turn not mass-produced either, and until the end of production in 1983 Syrena had a non-independent rear suspension, with transverse feather-coil and rigid axle. See also List of Eastern European cars References Bibliography Artur Markowski, Marcin Możejko: Syrena Sport – Czas na rekonstrukcję!, Classicauto, 2011, no. 56, p. 24-33 Artur Markowski, Marcin Możejko: Syrena Sport – Silnik z komputera, Classicauto, 2011, no. 61, p. 40-43 Andrzej Glajzer: Prawdy i legendy - Syrena Sport, Automobilista, 2010, no. 1, p. 14-23 Katarzyna Kociuba: Czysta radość tworzenia - wywiad z profesorem Cezarym Nawrotem, Automobilista, 2000, no. 1, p. 12-16 Andrzej Zieliński: Polskie konstrukcje motoryzacyjne 1947-1960. Warszawa: Wydawnictwa Komunikacji i Łączności, 2006. , p. 36-38 Z. Glinka: Naprawa samochodów FSO Syrena, Wydawnictwo Komunikacji i Łączności, Warszawa 1969. Stanisław Szelichowski: Punkty na zachętę Motor, 2005, no. 2 (2691) Karol Jerzy Mórawski: Syrena. Samochód PRL, Wydawnictwo TRIO, Warszawa 2005 Zdzisław D. Skoczek: Kulisy Polskiej Motoryzacji: Syrena zdaje egzamin, Motor, 2006 no. 28 Bernard Vermaylen: Voitures des Pays de l'Est, ETAI 2008, p. 64-65 Andrzej Bukowski: Zmodernizowana Syrena, Młody Technik, 1961 no. 8, p. 61-63 R. Lange: Syrena, Sport – Studium gotowe, Motor no. 19 (419), 1960 p. 1; 8-9 A. Zieliński, M. Wachowski, S. Kubiak: Wielkie Nadzieje, Motor no. 21 (421), 1960, p. 8-9 Wiktor Bryx: My też chcemy podziwiać, Motor no. 26 (426), 1960, p. 11 External links Film material showing the original car (TVP), YouTube Concept cars Syrena Sport Science and technology in Poland Front-wheel-drive sports cars