{"id":171704,"date":"2024-02-05T11:19:57","date_gmt":"2024-02-05T09:19:57","guid":{"rendered":"https:\/\/boatreviewmagazine.com\/news\/en-test-mercury-450r-les-nouveaux-rockets-de-mercury-marine\/"},"modified":"2026-02-12T01:11:31","modified_gmt":"2026-02-11T23:11:31","slug":"en-test-mercury-450r-les-nouveaux-rockets-de-mercury-marine","status":"publish","type":"post","link":"https:\/\/www.boatreviewmagazine.com\/fr\/en-test-mercury-450r-les-nouveaux-rockets-de-mercury-marine\/","title":{"rendered":"En test. Mercury 450R&nbsp;: les nouveaux \u00ab&nbsp;rockets&nbsp;\u00bb de Mercury Marine"},"content":{"rendered":"<p><strong><span style=\"color: #ff0000;\">Mercury 450R, le nouveau hors-bord de la gamme Mercury Marine Racing<\/span><br \/>\n<\/strong><\/p>\n<hr>\n<p><a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-outboards-1.jpg\" target=\"_blank\" rel=\"noopener\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignleft wp-image-11665\" title=\"Moteurs hors-bord Mercury 450R\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-outboards-1.jpg\" alt=\"Moteurs hors-bord Mercury 450R\" width=\"420\" height=\"280\"><\/a>Nous avions d\u00e9j\u00e0 annonc\u00e9 leur arriv\u00e9e imminente avant l\u2019\u00e9t\u00e9.<\/p>\n<p>Nous vous en avons parl\u00e9 alors que, enthousiastes, nous attendions de les tester. Maintenant que le test a \u00e9t\u00e9 effectu\u00e9, le mot \u00ab&nbsp;\u00e9motion&nbsp;\u00bb \u00e9merge fortement des parenth\u00e8ses o\u00f9 il \u00e9tait confin\u00e9 pour rester grav\u00e9 \u00e0 jamais dans notre m\u00e9moire. <\/p>\n<p><strong>Les Mercury 450R sont de v\u00e9ritables rockets<br \/>\n<\/strong><\/p>\n<p>Lors du Salon nautique international de G\u00eanes, la veille du test et apr\u00e8s avoir organis\u00e9 l\u2019heure du test, les techniciens de Mercury nous ont quitt\u00e9s avec ces mots&nbsp;: faites attention \u00e0 votre cou demain&nbsp;! Leur sourire \u00e9tait narquois, nous aurions compris pourquoi le lendemain. <\/p>\n<p>Voici ce qui s\u2019est pass\u00e9.<\/p>\n<h3>Test du Mercury 450R<\/h3>\n<p>Nous arrivons au quai t\u00f4t le matin. Deux Mercury 450R nous attendent dans leur livr\u00e9e blanche et rouge, install\u00e9s sur le tableau arri\u00e8re d\u2019un <a title=\"\" href=\"https:\/\/nuovajollymarine.com\/prince-38-cc\/\" target=\"_blank\" rel=\"noopener\"><strong>Nuova Jolly Prince&nbsp;38<\/strong><\/a>. Nous sommes imm\u00e9diatement impressionn\u00e9s par la conception des capots \u00e9troits et effil\u00e9s. Contiennent-ils vraiment 450&nbsp;ch et un turbocompresseur&nbsp;?   <\/p>\n<p>Les moteurs <a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-starting-1.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"alignright wp-image-11666\" title=\"D\u00e9marrage du Mercury 450R\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-starting-1.jpg\" alt=\"D\u00e9marrage du Mercury 450R\" width=\"420\" height=\"280\"><\/a>tournent d\u00e9j\u00e0, mais sont totalement silencieux, ils sont l\u00e9g\u00e8rement audibles au ralenti. Nous mettons nos <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">gilets autogonflants, attachons la dragonne d\u2019urgence et appareillons imm\u00e9diatement.<\/span><\/span> <\/p>\n<p>Nous sommes trois \u00e0 bord, avec un poids total de 240&nbsp;kg. Le bateau, quant \u00e0 lui, a un d\u00e9placement \u00e0 sec de 3&nbsp;200&nbsp;kg et une capacit\u00e9 de carburant de 550&nbsp;litres. Les deux Mercury 450&nbsp;R V8 de 4,6&nbsp;l suraliment\u00e9s p\u00e8sent 313&nbsp;kg chacun, offrant le <strong>meilleur rapport poids\/puissance du march\u00e9<\/strong>. Leurs 900&nbsp;chevaux <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">devront donc faire face \u00e0 un poids total de pr\u00e8s de 5&nbsp;tonnes.<\/span><\/span>   <\/p>\n<p>La mer n\u2019est pas plate. <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">Le vent du nord souffle avec force et g\u00e9n\u00e8re des vagues abruptes insidieuses, mais nous voulons <\/span><span class=\"\" title=\"\">mettre les moteurs \u00e0 l\u2019\u00e9preuve. Le syst\u00e8me Mercury Acrive Trim aura beaucoup \u00e0 faire. <\/span><\/span><\/p>\n<p>Je mets la proue dans les vagues, pousse les manettes des gaz vers l\u2019avant et r\u00e9alise enfin ce \u00e0 quoi les techniciens faisaient r\u00e9f\u00e9rence la veille. Je suis repouss\u00e9 contre mon si\u00e8ge, alors je <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">contracte les muscles de mon cou pour r\u00e9sister \u00e0 la pouss\u00e9e.<\/span> <span class=\"\" title=\"\">La puissance est grande et imm\u00e9diate, les nouveaux moteurs nous montrent imm\u00e9diatement de quoi ils sont faits.<\/span><\/span> <\/p>\n<p><a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-at-sea-1.jpg\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"alignleft wp-image-11668\" title=\"Mercury 450R en mer\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-at-sea-1.jpg\" alt=\"Mercury 450R en mer\" width=\"420\" height=\"280\"><\/a>J\u2019abandonne imm\u00e9diatement l\u2019id\u00e9e de noter les donn\u00e9es sur mon carnet, il est tout simplement impossible d\u2019\u00e9crire. Je me connecte donc \u00e0 VesselView, l\u2019application Mercury Marine qui affiche toutes les donn\u00e9es provenant des moteurs sur un \u00e9cran de t\u00e9l\u00e9phone portable. Compte tenu de la vitesse et de la pouss\u00e9e que les hors-bord fournissent, <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">prendre des captures d\u2019\u00e9cran est la seule fa\u00e7on possible de \u00ab&nbsp;s\u00e9curiser&nbsp;\u00bb nos donn\u00e9es.<\/span><\/span>  <\/p>\n<p>Maintenant, nous sommes pr\u00eats \u00e0 effectuer nos tests d\u2019acc\u00e9l\u00e9ration. 20&nbsp;n\u0153uds en 3,4&nbsp;secondes, 30&nbsp;n\u0153uds en 5,6&nbsp;secondes et, \u00e0 <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">la neuvi\u00e8me seconde, nous naviguons d\u00e9j\u00e0 \u00e0 40&nbsp;n\u0153uds alors que les Mercury 450R ne tournent qu\u2019\u00e0 4&nbsp;700&nbsp;tr\/min.<\/span><\/span> <\/p>\n<div class=\"tlid-result-transliteration-container result-transliteration-container transliteration-container\">\n<p class=\"tlid-transliteration-content transliteration-content full\">En seulement 9&nbsp;secondes, le bateau \u00ab&nbsp;vole&nbsp;\u00bb \u00e0 40&nbsp;n\u0153uds et 4&nbsp;700&nbsp;tr\/min.<\/p>\n<\/div>\n<p>Le moteur <a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-max-speed-1.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-11669\" title=\"Mercury 450R, vitesse maximale\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-max-speed-1.jpg\" alt=\"Mercury 450R, vitesse maximale\" width=\"420\" height=\"280\"><\/a>son est plein et agressif et, lorsque la <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">turbine d\u00e9marre, il devient une musique vraiment excitante.<\/span> <span class=\"\" title=\"\">Le syst\u00e8me Active Trim est tr\u00e8s utile&nbsp;; avec de telles performances, les r\u00e9glages manuels seraient toujours tardifs et impr\u00e9cis.<\/span><\/span><\/p>\n<p>Le bateau atteint 50&nbsp;n\u0153uds en seulement 13,4&nbsp;secondes et la <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">pouss\u00e9e ne semble jamais s\u2019arr\u00eater.<\/span> <span class=\"\" title=\"\">Au r\u00e9gime maximal (6&nbsp;400&nbsp;tr\/min), le couple du Mercury 450R nous fait atteindre 61&nbsp;n\u0153uds.<\/span><\/span><\/p>\n<p>Je repousse les manettes des gaz pour reprendre mon souffle.<\/p>\n<p>Les deux Mercury 450R en test \u00ab<span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">portent&nbsp;\u00bb des h\u00e9lices en acier <em>Evolution&nbsp;4<\/em> de 21&nbsp;pouces.<\/span> <span class=\"\" title=\"\">En discutant avec le pilote Mercury qui nous accompagne lors de ce test, j&rsquo;apprends que le m\u00eame bateau mais \u00e9quip\u00e9 d&rsquo;h\u00e9lices de 23 pouces a d\u00e9j\u00e0 d\u00e9pass\u00e9 les 67 n\u0153uds&#8230; Peut-\u00eatre un record pour un bateau pneumatique standard de 38 pieds. <\/span><\/span><\/p>\n<p><a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-turn-1.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-11670\" title=\"Mercury 450R, tourner\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-turn-1.jpg\" alt=\"Mercury 450R, tourner\" width=\"420\" height=\"280\"><\/a>\u00c0 ce stade, je veux tester la r\u00e9ponse du moteur <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">en effectuant des acc\u00e9l\u00e9rations et des d\u00e9c\u00e9l\u00e9rations continues.<\/span> <span class=\"\" title=\"\">M\u00eame \u00e0 bas r\u00e9gime, le compresseur volum\u00e9trique semble toujours fonctionner, la pouss\u00e9e est vigoureuse et imm\u00e9diate.<\/span> <span class=\"\" title=\"\">Lorsque tout le couple entre en jeu, la r\u00e9action des moteurs est rapide, elle passe de \u00ab&nbsp;z\u00e9ro \u00e0 cent&nbsp;\u00bb en un instant.<\/span><\/span><\/p>\n<p>J\u2019effectue des virages de plus en plus serr\u00e9s et rapides, le <span class=\"tlid-translation translation\" lang=\"en\"><span title=\"\"> l\u2019angle de rotation des moteurs est de 29,5&nbsp;degr\u00e9s, l\u2019Active Trim fonctionne sans cesse sur les deux moteurs et je n\u2019ai pas \u00e0 me soucier de la cavitation.<\/span> <span title=\"\">Le syst\u00e8me assure une excellente gestion de la puissance, m\u00eame en cas d\u2019erreur du pilote.<\/span> <span title=\"\">Je serre le rayon jusqu\u2019\u00e0 15&nbsp;m\u00e8tres&#8230; Nous naviguons toujours \u00e0 20&nbsp;n\u0153uds, avec les deux h\u00e9lices bien plant\u00e9es dans l\u2019eau. <\/span> <span title=\"\">Je m\u2019amuse beaucoup.<\/span><\/span><\/p>\n<h3>Enfin, une br\u00e8ve r\u00e9flexion sur la consommation de carburant<\/h3>\n<p>Les donn\u00e9es que nous avons recueillies montrent clairement que la meilleure vitesse de croisi\u00e8re est celle que les moteurs fournissent \u00e0 3&nbsp;500&nbsp;tr\/min. La vitesse est <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">sup\u00e9rieure \u00e0 25&nbsp;n\u0153uds et la consommation totale pour les deux moteurs est de 3,1&nbsp;litres par mille.<\/span><\/span> <\/p>\n<p><a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-Mercury-VesselView-1.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-11671\" title=\"Mercury 450R, Mercury VesselView\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-Mercury-VesselView-1.jpg\" alt=\"Mercury 450R, Mercury VesselView\" width=\"250\" height=\"445\"><\/a>C\u2019est un excellent r\u00e9sultat <a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-Mercury-VesselView-2.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-11672\" title=\"Mercury 450R, Mercury VesselView 2\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-Mercury-VesselView-2.jpg\" alt=\"Mercury 450R, Mercury VesselView 2\" width=\"250\" height=\"445\" srcset=\"https:\/\/www.boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-Mercury-VesselView-2.jpg 506w, https:\/\/www.boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-Mercury-VesselView-2-169x300.jpg 169w\" sizes=\"(max-width: 250px) 100vw, 250px\" \/><\/a>pour un moteur suraliment\u00e9 de 450&nbsp;ch.<\/p>\n<p>Compar\u00e9e au Verado&nbsp;300, le moteur Mercury V8 de 4,6&nbsp;L le plus puissant que nous ayons d\u00e9j\u00e0 test\u00e9 sur un bateau avec le m\u00eame poids que le Prince&nbsp;38&nbsp;CC, la consommation de carburant du 450R n\u2019est que de <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">un demi-litre\/mille sup\u00e9rieure.<\/span> <span class=\"\" title=\"\">Tr\u00e8s faible, compte tenu de l\u2019\u00e9cart de 150&nbsp;chevaux qui s\u00e9pare les deux moteurs.<\/span><\/span><\/p>\n<p>Vous pouvez donc profiter de longs transferts sans utiliser beaucoup de carburant.<\/p>\n<p>\u00c0 mesure que la vitesse augmente, la consommation augmente \u00e9galement. Acceptable lorsque l\u2019on navigue \u00e0 45&nbsp;n\u0153uds et 5&nbsp;000&nbsp;tr\/min (dans ce cas, la consommation est \u00e9gale \u00e0 3,8&nbsp;nm), elle atteint 5,5&nbsp;l\/nm lorsque l\u2019on navigue \u00e0 pleine vitesse. <\/p>\n<p>De plus, bien que plus puissants, les Mercury 450&nbsp;R sont plus \u00e9conomes en carburant que le seul autre hors-bord <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">capable de fournir presque la m\u00eame puissance.<\/span><\/span><\/p>\n<p>Cependant, la consommation ne doit pas \u00eatre prise trop au s\u00e9rieux. Il est clair que ceux qui choisissent ce moteur ne se soucient pas des \u00e9conomies. <\/p>\n<p>Le Mercury 450&nbsp;R est g\u00e9n\u00e9ralement appr\u00e9ci\u00e9 pour ses performances exceptionnelles et pour \u00eatre le hors-bord sportif standard le plus puissant et le plus avanc\u00e9 au monde.<\/p>\n<h3>Performances du Mercury 450R<\/h3>\n<table width=\"417\">\n<tbody>\n<tr>\n<td width=\"87\">RPM<\/td>\n<td width=\"106\">Vitesse en n\u0153uds<\/td>\n<td width=\"110\">Consommation totale de carburant (l\/h)<\/td>\n<td width=\"114\">Consommation totale de carburant (l\/nm)<\/td>\n<\/tr>\n<tr>\n<td>6,00<\/td>\n<td>3.5<\/td>\n<td>7.1<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>1,000<\/td>\n<td>5<\/td>\n<td>12.6<\/td>\n<td>2.5<\/td>\n<\/tr>\n<tr>\n<td>1,500<\/td>\n<td>7.5<\/td>\n<td>24.8<\/td>\n<td>3.3<\/td>\n<\/tr>\n<tr>\n<td>2,000<\/td>\n<td>10.5<\/td>\n<td>39.3<\/td>\n<td>3.7<\/td>\n<\/tr>\n<tr>\n<td>2,500<\/td>\n<td>13<\/td>\n<td>53.5<\/td>\n<td>4.1<\/td>\n<\/tr>\n<tr>\n<td>3,000<\/td>\n<td>20<\/td>\n<td>68<\/td>\n<td>3.4<\/td>\n<\/tr>\n<tr>\n<td>3,500<\/td>\n<td>26.5<\/td>\n<td>83<\/td>\n<td>3.1<\/td>\n<\/tr>\n<tr>\n<td>4,000<\/td>\n<td>33<\/td>\n<td>107<\/td>\n<td>3.2<\/td>\n<\/tr>\n<tr>\n<td>4,500<\/td>\n<td>38<\/td>\n<td>150<\/td>\n<td>3.9<\/td>\n<\/tr>\n<tr>\n<td>5,000<\/td>\n<td>44<\/td>\n<td>170<\/td>\n<td>3.8<\/td>\n<\/tr>\n<tr>\n<td>5,500<\/td>\n<td>50<\/td>\n<td>223.6<\/td>\n<td>4.4<\/td>\n<\/tr>\n<tr>\n<td>6,000<\/td>\n<td>55<\/td>\n<td>291<\/td>\n<td>5.2<\/td>\n<\/tr>\n<tr>\n<td>6,400<\/td>\n<td>61<\/td>\n<td>339<\/td>\n<td>5.5<\/td>\n<\/tr>\n<tr>\n<td>Acc\u00e9l\u00e9ration (kn)<\/td>\n<td>Temps en secondes<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>0-20<\/td>\n<td>3.4<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>0-30<\/td>\n<td>5.6<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>0-40<\/td>\n<td>9<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>0-50<\/td>\n<td>13.4<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>0-60<\/td>\n<td>17.8<\/td>\n<td><\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Conditions d\u2019essai&nbsp;:<\/strong> rafales de vent jusqu\u2019\u00e0 20&nbsp;n\u0153uds, vagues courtes basses, 3&nbsp;passagers \u00e0 bord<\/p>\n<h3>Ing\u00e9nierie du Mercury 450R<\/h3>\n<p><strong>Diff\u00e9rences avec le Mercury 400R<\/strong><\/p>\n<p><a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-technology.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-11673\" title=\"Mercury 450R, technologie\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-technology.jpg\" alt=\"Mercury 450R, technologie\" width=\"235\" height=\"446\" srcset=\"https:\/\/www.boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-technology.jpg 474w, https:\/\/www.boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-technology-158x300.jpg 158w\" sizes=\"(max-width: 235px) 100vw, 235px\" \/><\/a>Le Mercury 450&nbsp;R, le mod\u00e8le le plus puissant de la gamme Mercury Marine Racing, est bas\u00e9 sur la nouvelle t\u00eate motrice V8 de 4,6&nbsp;litres<span class=\"tlid-translation translation\" lang=\"en\"><span title=\"\">, une grande diff\u00e9rence par rapport au 400R qui, lui, est un moteur 6&nbsp;cylindres en ligne de 2,6&nbsp;L.<\/span><\/span><\/p>\n<p>La <span class=\"tlid-translation translation\" lang=\"en\"><span class=\"\" title=\"\">diff\u00e9rence de poids entre les deux moteurs n\u2019est que de 13&nbsp;kg en faveur du 400R, tr\u00e8s peu par rapport \u00e0 l\u2019augmentation correspondante de 50&nbsp;chevaux et de 40&nbsp;% de couple en plus en faveur du 450R.<\/span><\/span><\/p>\n<p><strong>Technique<\/strong><\/p>\n<p>Le 450&nbsp;R est bas\u00e9 sur la m\u00eame t\u00eate motrice V8 de 4,6&nbsp;litres utilis\u00e9e pour les mod\u00e8les hors-bord Mercury Racing 300R \u00e0 aspiration normale. Le bloc en aluminium exclusif \u00e0 64&nbsp;degr\u00e9s est surmont\u00e9 de culasses en aluminium avec une conception Mercury Racing Quad Cam Four Valve (QC4) et deux arbres \u00e0 cames en t\u00eate (DOHC). Le train de soupapes est dot\u00e9 d\u2019un profil de came d\u2019admission haute performance et de soupapes d\u2019\u00e9chappement Inconel de sp\u00e9cification course. Les arbres \u00e0 cames sont entra\u00een\u00e9s par cha\u00eene et fonctionnent dans un bain d\u2019huile, il n\u2019y a donc pas de courroie de distribution \u00e0 entretenir.  <\/p>\n<p>Le rapport poids\/puissance est tout simplement excellent&nbsp;: 1,47&nbsp;ch par kg, ce qui est <strong>le meilleur rapport poids\/puissance du march\u00e9.<\/strong><\/p>\n<p><strong><b>Performances suraliment\u00e9es<\/b><\/strong><\/p>\n<p>Le moteur extrait une puissance incroyable d\u2019un compresseur volum\u00e9trique \u00e0 double vis entra\u00een\u00e9 par courroie Mercury Racing. Le compresseur volum\u00e9trique est refroidi par eau pour r\u00e9duire la temp\u00e9rature de la charge d\u2019admission et augmenter la puissance. <\/p>\n<p>Les refroidisseurs d\u2019air de suralimentation doubles sont con\u00e7us pour r\u00e9duire la temp\u00e9rature de la charge d\u2019admission comprim\u00e9e afin d\u2019augmenter davantage la densit\u00e9 de l\u2019air et la puissance de sortie. Pour maintenir des performances optimales, une soupape de d\u00e9rivation de suralimentation ajuste automatiquement la pression de suralimentation maximale en r\u00e9ponse aux conditions ambiantes changeantes. <\/p>\n<p><strong>Embase<\/strong><\/p>\n<p>L\u2019embase Sport Master per\u00e7ant la surface, <a href=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-V8-4-6L-engine.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-11674\" title=\"Moteur Mercury 450R V8 4-6L\" src=\"https:\/\/boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-V8-4-6L-engine.jpg\" alt=\"Moteur Mercury 450R V8 4-6L\" width=\"420\" height=\"280\" srcset=\"https:\/\/www.boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-V8-4-6L-engine.jpg 900w, https:\/\/www.boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-V8-4-6L-engine-300x200.jpg 300w, https:\/\/www.boatreviewmagazine.com\/wp-content\/uploads\/2020\/02\/Mercury-450R-V8-4-6L-engine-768x512.jpg 768w\" sizes=\"(max-width: 420px) 100vw, 420px\" \/><\/a>con\u00e7ue pour les bateaux capables d\u2019atteindre des vitesses sup\u00e9rieures \u00e0 70&nbsp;n\u0153uds, est dot\u00e9e de prises d\u2019eau basses et d\u2019un bord d\u2019attaque en croissant pour une efficacit\u00e9 maximale, et pour l\u2019application 450R, d\u2019un nouvel arbre d\u2019h\u00e9lice robuste monobloc en acier inoxydable de 1,25&nbsp;pouce de diam\u00e8tre. Le skeg carross\u00e9 disponible contrecarre le couple de l\u2019h\u00e9lice pour am\u00e9liorer les performances et la maniabilit\u00e9 dans les applications \u00e0 un seul moteur. Le 450R est \u00e9galement disponible avec l\u2019embase 5.44&nbsp;HD pour les applications immerg\u00e9es traditionnelles et \u00e0 basse vitesse.  <\/p>\n<p>Toutes les embases 450R ont un rapport de transmission de 1,60:1 pour une acc\u00e9l\u00e9ration et une vitesse am\u00e9lior\u00e9es.<\/p>\n<p><strong>H\u00e9lices<\/strong><\/p>\n<p>Sur les nouveaux mod\u00e8les 450R, les h\u00e9lices populaires MAX5 et Outboard CNC Cleaver sont n\u00e9cessaires pour une utilisation avec l\u2019embase Sport Master per\u00e7ant la surface. Pour les applications d\u2019embase 5.44&nbsp;HP, les Bravo&nbsp;I&nbsp;FS, Bravo&nbsp;I&nbsp;LT, Enertia&nbsp;ECO&nbsp;XP et Rev&nbsp;4&nbsp;XP de Mercury Racing sont d\u2019excellentes options. <\/p>\n<p><strong>Options de couleur<br \/>\n<\/strong><\/p>\n<p>Le Mercury Racing 450R est disponible en blanc Cold Fusion et dans le l\u00e9gendaire noir Phantom de Mercury.<\/p>\n<p>Les mod\u00e8les blancs Cold Fusion sont finis avec des panneaux d\u2019accentuation de capot Devil Red Eye avec une section centrale avanc\u00e9e (AMS) et une embase blanches. Les mod\u00e8les noirs sont finis avec des panneaux d\u2019accentuation de capot gris graphite et une AMS et une embase gris graphite assorties. Des kits de panneaux d\u2019accentuation Devil Red Eye, gris graphite et fibre de carbone sont disponibles pour personnaliser un hors-bord 450R selon le sch\u00e9ma de couleurs d\u2019un bateau.  <\/p>\n<h3>Caract\u00e9ristiques techniques du Mercury 450R<\/h3>\n<table dir=\"ltr\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\">\n<colgroup>\n<col width=\"277\">\n<col width=\"755\"><\/colgroup>\n<tbody>\n<tr>\n<td>Puissance nominale<\/td>\n<td>450<\/td>\n<\/tr>\n<tr>\n<td>R\u00e9gime de ralenti<\/td>\n<td>600<\/td>\n<\/tr>\n<tr>\n<td>R\u00e9gime maximal \u00e0 plein r\u00e9gime<\/td>\n<td>5800-6400<\/td>\n<\/tr>\n<tr>\n<td>Cylindres\/Configurations du moteur<\/td>\n<td>V8 [64&nbsp;degr\u00e9s] avec double arbre \u00e0 cames en t\u00eate \u00e0 32&nbsp;soupapes [DOHC]<\/td>\n<\/tr>\n<tr>\n<td>Cylindr\u00e9e (pouces cubes, CID) \/ (Litres, L)<\/td>\n<td>279&nbsp;CID \/ 4,6&nbsp;L<\/td>\n<\/tr>\n<tr>\n<td>Al\u00e9sage et course (po) \/ (mm)<\/td>\n<td>3,6&nbsp;po x 3,4&nbsp;po \/ 92&nbsp;mm x 86&nbsp;mm<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me d\u2019induction<\/td>\n<td>Suraliment\u00e9 avec refroidissement de l\u2019air de suralimentation et contr\u00f4le \u00e9lectronique de la suralimentation<\/td>\n<\/tr>\n<tr>\n<td>Conception de la section centrale<\/td>\n<td>Section centrale avanc\u00e9e avec plaques de guidage robustes et supports de moteur renforc\u00e9s pour une maniabilit\u00e9 am\u00e9lior\u00e9e \u00e0 haute vitesse<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me d\u2019alimentation<\/td>\n<td>Injection \u00e9lectronique de carburant (EFI) contr\u00f4l\u00e9e par ordinateur<\/td>\n<\/tr>\n<tr>\n<td>Exigences en mati\u00e8re de carburant<\/td>\n<td>Essence ordinaire sans plomb 89-indice d\u2019octane minimum (R+M\/2) ou 95&nbsp;RON 10&nbsp;% d\u2019\u00e9thanol maximum<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me d\u2019allumage<\/td>\n<td>SmartCraft PCM&nbsp;112 \u00e0 induction num\u00e9rique<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me de charge<\/td>\n<td>115&nbsp;amp\u00e8res (1449&nbsp;watts)<\/td>\n<\/tr>\n<tr>\n<td>D\u00e9marrage<\/td>\n<td>\u00c9lectrique SmartStart<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me d\u2019\u00e9chappement<\/td>\n<td>S\u00e9lectionnable<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me de refroidissement<\/td>\n<td>Refroidissement \u00e0 eau avec contr\u00f4le thermostatique<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me de lubrification<\/td>\n<td>Carter humide int\u00e9gr\u00e9 avec refroidisseur d\u2019huile<\/td>\n<\/tr>\n<tr>\n<td>Exigences en mati\u00e8re d\u2019huile<\/td>\n<td>Certifi\u00e9 NMMA FCW SAE 25W-50<\/td>\n<\/tr>\n<tr>\n<td>Capacit\u00e9 d\u2019huile (qts) \/ (L)<\/td>\n<td>7,0 quarts \/ 6,6 litres<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me de gestion du moteur<\/td>\n<td>SmartCraft PCM 112<\/td>\n<\/tr>\n<tr>\n<td>Commandes d\u2019acc\u00e9l\u00e9rateur et de changement de vitesse<\/td>\n<td>Acc\u00e9l\u00e9rateur et changement de vitesse num\u00e9riques<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me de protection du moteur<\/td>\n<td>SmartCraft Engine Guardian<\/td>\n<\/tr>\n<tr>\n<td>Syst\u00e8me de trim\/relevage<\/td>\n<td>Trim et relevage assist\u00e9s<\/td>\n<\/tr>\n<tr>\n<td>Plage d\u2019inclinaison maximale<\/td>\n<td>73\u00b0 (-6\u00b0 \u00e0 67\u00b0)<\/td>\n<\/tr>\n<tr>\n<td>Plage de trim maximale<\/td>\n<td>20\u00b0 (-6\u00b0 \u00e0 14\u00b0)<\/td>\n<\/tr>\n<tr>\n<td>Commande de p\u00eache \u00e0 la tra\u00eene<\/td>\n<td>600-1200 tr\/min<\/td>\n<\/tr>\n<tr>\n<td>Embase 450R<\/td>\n<td>5,44\u201d HD<\/td>\n<\/tr>\n<tr>\n<td>Embase 450R<\/td>\n<td>Sport Master<\/td>\n<\/tr>\n<tr>\n<td>Rapport d\u2019engrenage<\/td>\n<td>1.60:1<\/td>\n<\/tr>\n<tr>\n<td>Aileron compens\u00e9<\/td>\n<td>Disponible<\/td>\n<\/tr>\n<tr>\n<td>Changement de vitesse<\/td>\n<td>F-N-R<\/td>\n<\/tr>\n<tr>\n<td>Angle de direction<\/td>\n<td>30 degr\u00e9s +\/-<\/td>\n<\/tr>\n<tr>\n<td>Direction<\/td>\n<td>Direction assist\u00e9e \u00e9lectrohydraulique avec v\u00e9rin de direction int\u00e9gr\u00e9<\/td>\n<\/tr>\n<tr>\n<td>Centres de montage<\/td>\n<td>26&Prime;<\/td>\n<\/tr>\n<tr>\n<td>CARB Star Rating3<\/td>\n<td>3 \u00e9toiles<\/td>\n<\/tr>\n<tr>\n<td>Garantie<\/td>\n<td>Limit\u00e9e de 3 ans<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>Mercury Marine<\/strong><\/p>\n<p><a href=\"https:\/\/www.mercurymarine.com\/it\/it\/\">mercurymarine.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mercury 450R, le nouveau hors-bord de la gamme Mercury Marine Racing Nous avions d\u00e9j\u00e0 annonc\u00e9 leur arriv\u00e9e imminente avant l\u2019\u00e9t\u00e9. Nous vous en avons parl\u00e9 alors que, enthousiastes, nous attendions de les tester. Maintenant que le test a \u00e9t\u00e9 effectu\u00e9, le mot \u00ab&nbsp;\u00e9motion&nbsp;\u00bb \u00e9merge fortement des parenth\u00e8ses o\u00f9 il \u00e9tait confin\u00e9 pour rester grav\u00e9 \u00e0 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":171705,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[378,377],"tags":[],"type-of-review":[1072],"class_list":["post-171704","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-essais-de-maxi-rib-et-semi-rigides","type-of-review-photo-testo-review"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>En test. 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