Boating NZ - - Boat Business - www.mer­cury­ma­

Mer­cury Marine re­leased a new line of com­pact V6, 3.0-litre diesel en­gines at the Syd­ney In­ter­na­tional Boat Show in August.

The com­mon-rail, high-speed diesel is avail­able in 150hp, 230hp and 270hp vari­ants.

Three years of test­ing have con­firmed class-lead­ing ac­cel­er­a­tion, re­li­a­bil­ity and speed, says Mer­cury, made pos­si­ble by a new wa­ter-cooled vari­able ge­om­e­try tur­bocharger (VGT) de­sign.

Work­ing in tan­dem with Mer­cury’s so­phis­ti­cated en­gine con­trol man­age­ment sys­tem, VGT pro­vides re­duced time to plane and out­stand­ing over­all per­for­mance. In ad­di­tion, the new en­gine is de­signed for ease of in­stal­la­tion and ser­vic­ing and of­fers ex­cep­tion­ally low lev­els of noise, vi­bra­tion and harsh­ness (NVH).

These en­gines com­ply with tougher diesel emis­sion stan­dards being in­tro­duced in many coun­tries.

Con­fig­ured for in­board shaft-drive and wa­ter­jet or in­board stern­drive power, this com­pact de­sign can fit vir­tu­ally any ves­sel. In­stal­la­tion and main­te­nance are easy while low fuel con­sump­tion prom­ises re­duced oper­at­ing costs and longer range.

The en­gine is based on a well-proven FCA (Fiat Chrysler Au­to­mo­biles) VM Mo­tori de­sign, ex­ten­sively mod­i­fied for marine ap­pli­ca­tion. The 60o V6’s alu­minium cylin­der heads and com­pacted graphite-iron cylin­der block de­liver light weight and ex­cel­lent heat trans­fer for op­ti­mal cool­ing. The tim­ing sys­tem is chain-driven, so no belts to re­place. The glow-plug sys­tem is stan­dard, and the en­gine and ex­haust sys­tem are closed-cooled for cor­ro­sion pro­tec­tion.

The new en­gines are com­pat­i­ble with Mer­cury Smartcraft tech­nolo­gies and they also in­te­grate with Mer­cury’s Joy­stick Pi­lot­ing for In­boards (JPI) and Joy­stick Pi­lot­ing for Stern­drives (JPS).

In New Zealand, the en­gine has al­ready been fit­ted to a Tris­tram 741 Off­shore, de­liv­er­ing out­stand­ing per­for­mance.

ABOVE The new V6 Mer­cury diesels are com­pact and lightweight.

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