Important Information
Page 1A-12 90-863758060 AUGUST 2006
INBOARD MODELS OVER 224 KW (300 HP)
MX 6.2 MPI
MX 6.2 MPI
Horizon
8.1S HO 8.1S Horizon
Propshaft Power 239 kw (320 hp) 313 kw (420 hp) 276 kw (370 hp)
Displacement 6.2 liter (377 cid) 8.1 liter (496 cid)
Configuration /
Cylinders
V‑8
Bore x Stroke 102 ‑ 95.3 mm (4.00 x 3.75 in.) 108 x 111 mm (4.25 x 4.38 in.)
Compression Ratio 9.0:1 9.1:1
Fuel System MPI
Ignition System Digital Distributorless
Alternator Amp.
(Cold/Hot)
72 amp / 65 amp
Maximum RPM at
WOT
4600–5000 4400–4800 4200–4600
Rev Limiter RPM 5150 4950 4750
Idle RPM 600 650
Oil Pressure @ 2000
RPM
207–483 kPa (30–70 psi) 413 kPa (60 psi)
Minimum Oil
Pressure @ Idle
28 kPa (4 psi) 207 kPa (30 psi)
Thermostat
Temperature
71°C (160°F) (Seawater Cooled) N/A
Thermostat
Temperature
77°C (170°F) (Closed Cooling) 71°C (160°F) (Closed Cooling)
Timing 8° BTDC N/A
Firing Order 1‑8‑4‑3‑6‑5‑7‑2 1‑8‑7‑2‑6‑5‑4‑3
Transmission
Offerings
Refer to SECTION 2‑Transmission and Drive Line
Dimensions Refer to Installation CD
Weight 390 kg (860 lb.) (with down angle transmission)
513 kg (1130 lb.) (with down
angle transmission)
Remote Oil Standard
Closed Cooling Optional Standard
Audio Warning
System
Standard
Water Drain System
Multipoint Drain System Standard
Air Actuated Water Drain is
optional with Closed Cooling
Air Actuated Water Drain
50 Amp Circuit
Breaker
Standard
Flush System Standard Kit Kit
Optional Riser Kits 43 mm (1.7 in.) 76 mm (3 in.) 152 mm (6 in.)
51 mm (2 in.) 152 mm
(6 in.) 203 mm (8 in.)
Battery rating 750 cca / 950 mca / 180 Ah (Minimum rating)
Battery rating for DTS
models
800 cca / 1000 mca / 190 Ah (Minimum rating)
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