ZT370
Yanmar's current hydraulic-clutch, twin counter-rotating-propeller sterndrive rated to 370 mhp, sold with the 4LV and 8LV common-rail engines (earlier also BY3 and 6LPA-STZP2) and joystick-capable with JC10.
The ZT370 is a Yanmar-developed sterndrive with hydraulic shifting through multi-plate clutches, counter-rotating front and rear propellers, power steering and power trim. Yanmar rates it at 370 mhp (272 kW) input and offers reduction ratios of 1.65, 1.78, 1.97 and 2.18:1 (the same ahead and astern); trim range is -6 to +10 degrees and trailering tilt 51 degrees. Yanmar's 8LV-Z datasheet and website give a dry weight of 112 kg with propellers; the 6LPA-STZP2 datasheet gives 100 kg without stating the basis. Shift control is mechanical or electro-magnetic.
It was announced with the 8LV V8 diesel at the Miami boat show in February 2011, replacing the ZT350. Engines it has been sold with include the 8LV-320Z/350Z/370Z, the 4LV sterndrive models, the BMW-based BY2 and BY3 Z models and the 6LPA-STZP2; on the BY3 and 6LPA-STZP2 Yanmar also offered MerCruiser Bravo legs as the alternative. Twin installations can be controlled by the VC10 system or the JC10 (now JC10A) joystick. It is in current production.
Sources
- 1. ZT370 Hydraulic YANMAR Sterndrive product page — Yanmar Marine International
- 2. Drives (Saildrive and Sterndrive overview) — Yanmar Marine International
- 3. 8LV-320Z / 8LV-350Z / 8LV-370Z datasheet (EN-8LVZ_0713) — Yanmar Europe
- 4. 6LPA-STZP2 Series datasheet (EN_DS6LPA-STZP2_0113) — Yanmar Europe
- 5. BY3 Series Operation Manual (0ABY0-G00301) — Yanmar
- 6. 6LPA Series Operation Manual (0A6LP-G00103) — Yanmar
- 7. Drive systems (saildrives, ZT370, pod drives, gears datasheet list), 2013 capture — Yanmar Marine
- 8. New Yanmar 370-hp V-8 Marine Diesel (Feb 16, 2011) — BoatTEST
Specifications compiled from manufacturer sources.