You are Here:
Tech Articles > Mercruiser Product Specifications > Mercruiser 8.1L Performance Spec's
Engine Specifications
|
Models
|
496 MAG HO
|
496 MAG
|
|
Propshaft Horsepower
|
4251
|
3751
|
|
Propshaft Kilowatts
|
3171
|
2801
|
|
Displacement
|
496 cid (8.1 l)
|
|
Maximum rpm @ WOT2
|
4600-5000 rpm
|
4400-4800 rpm
|
|
Idle rpm in NEUTRAL2
|
650 rpm
|
|
Oil Pressure @ 2000 rpm
|
60 psi (414 kPa)
|
|
Oil Pressure @ Idle
|
30 psi (207 kPa)
|
|
Thermostat
|
160o F (71o C)
|
|
Firing Order
|
1-8-7-2-6-5-4-3
|
|
Electrical System
|
12-Volt Negative (-) Ground
|
|
Alternator Rating - Hot
Operating Amps
|
65 Amps
|
|
Alternator Rating – Cold
Operating Amps
|
72 Amps
|
|
Recommended
Battery
Rating (Minimum)
|
650 cca/825 mca/150 Ah
|
1 Power Rated in Accordance with NMMA (National Marine Manufactures’ Association) rating Procedures.
2 Measured using an accurate service tachometer with engine at normal operating temperature.
