MerCruiser 8.1S HO 420 HP Marine Inboard Engine
MerCruiser 8.1S HO has the same 90 degree V8 powerhead design as its 5.7 and 6.2 litre counterparts, it’s unusual amongst petrol V8s in that it’s an undersquare engine. Displacing 8.1 litres or 496 cubic inches, the 8.1S HO has a 108mm bore and 111mm stroke. The HO designation stands for “High Output” because the 8.1 is available in two outputs. The standard 8.1S inboard develops 370hp at the crankshaft at 4400rpm and has a Wide Open Throttle rev range of 4200-4600, whereas the HO develops 419.6hp at 4600rpm with a WOT rev range of 4400 – 4800.
Specifications:
- Number of Cylinders : 8
- Horse Power : 420
- Configuration : V-8
- Weight : 1130.00lbs
- Fuel Type : Gasoline
- Fuel Delivery : Fuel Injected
- Displacement : 496.00cu in
- Alternator Output : 65 amp
Reviews
There are no reviews yet.