{"id":43147,"date":"2025-11-13T09:40:08","date_gmt":"2025-11-13T08:40:08","guid":{"rendered":"https:\/\/www.italpassion.fr\/?p=43147"},"modified":"2025-11-13T09:40:08","modified_gmt":"2025-11-13T08:40:08","slug":"alfa-romeo-75-turbo-prototech-350-cv-con-motore-bialbero-dotato-di-una-rara-parte-meccanica","status":"publish","type":"post","link":"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/","title":{"rendered":"Alfa Romeo 75 Turbo Prototech: 350 CV da un motore Bialbero con una parte meccanica rara!"},"content":{"rendered":"<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-75-protech.jpg\" alt=\"\" class=\"wp-image-43155\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-75-protech.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-75-protech-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-75-protech-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-75-protech-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p>Prototech Rennfahrzeugbau, tuner austriaco specializzato in competizioni, torna a far parlare di s\u00e9 con un'interpretazione radicale dell'Alfa Romeo 75 Turbo. Il segreto di questa macchina? L'integrazione di un motore definito \"raro\", basato su una testata Autodelta a 16 valvole, con una preparazione turbo.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-protech-1.jpg\" alt=\"\" class=\"wp-image-43158\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-protech-1.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-protech-1-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-protech-1-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-protech-1-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Un motore molto speciale da Autodelta<\/h2>\n\n\n\n<p>Autodelta, il braccio storico del concorso\u00a0<a href=\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/\">Alfa Romeo<\/a>Alla fine degli anni Settanta e all'inizio degli anni Ottanta, lavora a una versione a 16 valvole del motore Twin Cam a 4 cilindri in alluminio, meglio conosciuto con il leggendario nome di Bialbero. Un motore all'avanguardia con una filosofia molto sportiva, ispirato alle corse, ma che era gi\u00e0 stato montato sulle auto di serie negli anni Cinquanta. Per contrastare la crescente concorrenza dei motori Ford Cosworth e BMW nelle gare di turismo, Autodelta progett\u00f2 una versione a 16 valvole. L'Alfa Romeo 75 di serie, compresa la variante Turbo Evoluzione, dovette accontentarsi di motori a 8 valvole per motivi di costo. Autodelta produsse quindi un numero limitato di testate a 16 valvole progettate per le competizioni.\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/bialbero-16-soupapes.jpg\" alt=\"\" class=\"wp-image-43156\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/bialbero-16-soupapes.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/bialbero-16-soupapes-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/bialbero-16-soupapes-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/bialbero-16-soupapes-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">Rivista fotografica ruoteclassiche<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Pezzi specifici e rari<\/h2>\n\n\n\n<p>I motori presentavano un ampio coperchio della testa dei cilindri in stile competizione, speciali camere di combustione \"pent-roof\" con candele centrali per una combustione ottimale, condotti di aspirazione ad alta velocit\u00e0, flusso d'aria pi\u00f9 elevato e regimi pi\u00f9 alti, fino a 8.500\/9.000 giri\/min.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-autodelta-16-soupapes.jpg\" alt=\"\" class=\"wp-image-43157\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-autodelta-16-soupapes.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-autodelta-16-soupapes-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-autodelta-16-soupapes-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-autodelta-16-soupapes-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption class=\"wp-element-caption\">Foto smestas forum alfabb<\/figcaption><\/figure>\n\n\n\n<p>Il carattere prezioso di questi motori Autodelta derivava sia dalla loro rarit\u00e0 sia dalla loro natura artigianale, fatta a mano. Inoltre, il motore gode di un'ottima reputazione: \u00e8 leggero, robusto, ama i giri e ha caratteristiche che lo rendono ideale per la preparazione del turbo, grazie al buon controllo della pressione e degli aumenti di temperatura.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Un'Alfa Romeo Turbo Evoluzione pronta per le competizioni<\/h2>\n\n\n\n<p>Prototech vanta un gruppo meccanico costruito attorno a una testata autodelta a 16 valvole, completata da un esauriente lavoro di ottimizzazione. Il motore \u00e8 basato su un Alfa Romeo 2.0L, rinforzato e ampiamente modificato. I team Prototech hanno revisionato e rinforzato i condotti, hanno eseguito una lavorazione personalizzata dei supporti degli alberi a camme Evoluzione e hanno effettuato una calibrazione fine sul banco del motore.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"1200\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-moteur-16v-900x1200.jpg\" alt=\"\" class=\"wp-image-43149\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-moteur-16v-scaled.jpg 900w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-moteur-16v-315x420.jpg 315w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-moteur-16v-768x1024.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-moteur-16v-9x12.jpg 9w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"900\" height=\"1200\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-banc-desssai-900x1200.jpg\" alt=\"\" class=\"wp-image-43153\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-banc-desssai-scaled.jpg 900w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-banc-desssai-315x420.jpg 315w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-banc-desssai-768x1024.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-banc-desssai-9x12.jpg 9w\" sizes=\"auto, (max-width: 900px) 100vw, 900px\" \/><\/figure>\n\n\n\n<p>Il compressore specifico per la 75 Turbo viene mantenuto, ma utilizzato in una definizione racing. Le cifre annunciate dall'officina sono degne dell'ambizione: 315 CV per la versione ottimizzata 2.0L 16V e fino a 350 CV e 400 Nm di coppia nella configurazione battezzata \"Gruppo A \/ Evo\". Abbastanza per collocare questa 75 tra le pi\u00f9 serie interpretazioni moderne dell'epoca d'oro del turismo sovralimentato.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v.jpg\" alt=\"\" class=\"wp-image-43151\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-420x236.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-768x432.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-18x10.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"800\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-2.jpg\" alt=\"\" class=\"wp-image-43154\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-2.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-2-420x280.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-2-768x512.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/moteur-alfa-romeo-75-16v-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p>La trasmissione \u00e8 affidata a un cambio rinforzato di tipo \"dog-box\" che consente di cambiare marcia quasi istantaneamente, senza dover utilizzare il pedale della frizione sviluppato per far fronte a livelli di coppia elevati.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-transmission.jpg\" alt=\"\" class=\"wp-image-43152\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-transmission.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-transmission-420x236.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-transmission-768x432.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-transmission-18x10.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-dessous.jpg\" alt=\"\" class=\"wp-image-43150\" srcset=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-dessous.jpg 1200w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-dessous-420x236.jpg 420w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-dessous-768x432.jpg 768w, https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-romeo-75-dessous-18x10.jpg 18w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p>In definitiva, questa creazione soddisfa diversi requisiti rari: l'uso di un motore 16V Autodelta, un livello molto elevato di preparazione del motore convalidato sul banco di prova e una filosofia di sviluppo orientata alle prestazioni pure. Pur non potendo vantare l'autenticit\u00e0 storica di una vera Gruppo A d'epoca, rappresenta una delle pi\u00f9 riuscite interpretazioni contemporanee della 75 Turbo.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"A bordo di un&#039;Alfa Romeo 75 Turbo Evoluzione del 1987 con motore turbo a 4 cilindri da 1,8 litri da 990 kg e 350 CV.\" width=\"1200\" height=\"675\" src=\"https:\/\/www.youtube-nocookie.com\/embed\/Z-qHUd154Lg?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>","protected":false},"excerpt":{"rendered":"","protected":false},"author":8,"featured_media":43155,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"categories":[22],"tags":[511],"class_list":["post-43147","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-alfa-romeo","tag-alfa-romeo-75","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Alfa Romeo 75 Turbo Prototech : 350 ch avec un moteur Bialbero dot\u00e9 d&#039;une pi\u00e8ce m\u00e9canique rare\u00a0! - ItalPassion<\/title>\n<meta name=\"description\" content=\"Prototech&nbsp;Rennfahrzeugbau,&nbsp;pr\u00e9parateur&nbsp;autrichien&nbsp;sp\u00e9cialis\u00e9&nbsp;dans&nbsp;la&nbsp;comp\u00e9tition,&nbsp;fait&nbsp;parler&nbsp;de&nbsp;lui\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-cv-con-motore-bialbero-dotato-di-una-rara-parte-meccanica\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alfa Romeo 75 Turbo Prototech : 350 ch avec un moteur Bialbero dot\u00e9 d&#039;une pi\u00e8ce m\u00e9canique rare\u00a0! - ItalPassion\" \/>\n<meta property=\"og:description\" content=\"Prototech&nbsp;Rennfahrzeugbau,&nbsp;pr\u00e9parateur&nbsp;autrichien&nbsp;sp\u00e9cialis\u00e9&nbsp;dans&nbsp;la&nbsp;comp\u00e9tition,&nbsp;fait&nbsp;parler&nbsp;de&nbsp;lui\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-cv-con-motore-bialbero-dotato-di-una-rara-parte-meccanica\/\" \/>\n<meta property=\"og:site_name\" content=\"ItalPassion\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/italpassion\" \/>\n<meta property=\"article:published_time\" content=\"2025-11-13T08:40:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-75-protech.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Nicolas Anderbegani\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@italpassion\" \/>\n<meta name=\"twitter:site\" content=\"@italpassion\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/\"},\"author\":{\"name\":\"Nicolas Anderbegani\",\"@id\":\"https:\/\/www.italpassion.fr\/it\/#\/schema\/person\/efd63d72fc8007741c5836a896805b04\"},\"headline\":\"Alfa Romeo 75 Turbo Prototech : 350 ch avec un moteur Bialbero dot\u00e9 d&rsquo;une pi\u00e8ce m\u00e9canique rare\u00a0!\",\"datePublished\":\"2025-11-13T08:40:08+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/\"},\"wordCount\":646,\"commentCount\":4,\"publisher\":{\"@id\":\"https:\/\/www.italpassion.fr\/it\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.italpassion.fr\/wp-content\/uploads\/2025\/11\/alfa-75-protech.jpg\",\"keywords\":[\"Alfa Romeo 75\"],\"articleSection\":[\"Alfa Romeo\"],\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/\",\"url\":\"https:\/\/www.italpassion.fr\/it\/alfa-romeo\/alfa-romeo-75-turbo-prototech-350-ch-avec-un-moteur-bialbero-dote-dune-piece-mecanique-rare\/\",\"name\":\"Alfa Romeo 75 Turbo Prototech : 350 ch avec un moteur Bialbero dot\u00e9 d'une pi\u00e8ce m\u00e9canique rare\u00a0! 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