Mercury 8.2 MAG User Manual

Section 4 - Specifications
90-8M0074352 eng OCTOBER 2012 Page 55
8.2 MAG 8.2 MAG H.O.
Propshaft power
283 kW (380 hp) 320 kW (430 hp)
Displacement
8.2 L (502 cid)
Alternator amperage
Hot 72 A
Cold 65 A
RPM
WOT 4400–4800 4600–5000
Rev limiter 4950 5150
Idle RPM
Mechnical
650
DTS
Minimum oil pressure
At 2000 RPM 207 kPa (30 psi)
At idle 103 kPa (15 psi)
Thermostat
76° C (170° F)
Timing at idle
Not Adjustable
Firing order
1‑8‑4‑3‑6‑5‑7‑2
Minimum battery rating
Non‑DTS models 750 CCA, 950 MCA, 180 Ah
DTS models 800 CCA, 1000 MCA, 190 Ah
Spark plug type
NGK BPR6ES
Spark plug gap
0.83 mm (0.033 in.)
Engine Oil
For optimum engine performance and maximum protection, use the following oil:
Application
Recommended Oil
All MerCruiser engines Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40, NMMA FC‑W rated
IMPORTANT: Lubrication requirements for catalyzed engines differ from the requirements for noncatalyzed engines. Some
marine‑grade lubricants contain high levels of phosphorus, which can damage the catalyst system on MerCruiser engines.
Although these high‑phosphorus lubricants may allow acceptable engine performance, exposure over time will damage the
catalyst. Catalysts damaged by lubricants containing high levels of phosphorus may not be covered by the MerCruiser Limited
Warranty.
If Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40 oil is unavailable, use the following lubricants, listed in order of
recommendation. If you are servicing a catalyst engine, use these for short periods of time only.
1. Mercury/Quicksilver 25W‑40 Synthetic Blend, NMMA FC‑W–rated 4‑cycle MerCruiser oil
2. Mercury/Quicksilver 25W‑40, NMMA FC‑W–rated 4‑cycle MerCruiser oil
3. Other recognized brands of NMMA FC‑W–rated 4‑cycle oils
4. A good‑grade, straight‑weight detergent automotive oil according to the last row of the operating chart below

Mercury 8.2 MAG Specifications

General

Brand	Mercury
Model	8.2 MAG
Category	Engine
Language	English