What is an Outboard Nose Cone?
An outboard nose cone is a streamlined, hydrodynamic device that attaches to the front of the lower unit (gearcase) of an outboard motor....
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Mike Hill
- Aug 13
- 1 min
Will Light Wrist Pins improve Mercury 2-stroke V6 performance?
Upgrading to lightweight slip-fit wrist pins in your next Mercury 2-stroke V6 outboard (2.0, 2.4, 2.5 Liter) powerhead rebuild will...
350
Mike Hill
- Aug 11
- 2 min
Mercury Pro Max 225 Spec Sheet
The Mercury 225 HP Pro Max V6 is a high-performance 2-stroke outboard engine known for its power, speed, and reliability. Here are some...
450
Mike Hill
- Aug 10
- 2 min
Two-Stroke Tuners Handbook by Gordon Jennings
Gordon Jennings' Two-Stroke Tuners Handbook  holds particular significance for outboard engine builders due to its detailed exploration...
360
Mike Hill
- Aug 10
- 1 min
Basic Guide to Rebuild Mercury WH WMH WMV Carbs
This is a basic guide on how to clean and rebuild Mercury WH WMH WMV series outboard carburetors: Tools Needed: Screwdrivers, wrenches...
520
Mike Hill
- Aug 10
- 2 min
How to Precisely Measure Boat Propeller Pitch, without a Pitch Gauge?
When using a digital inclinometer to measure the pitch of a boat propeller, the "Blade Angle × Constant" method is a straightforward...
1280
Mike Hill
- Aug 3
- 1 min
What are the advantages of running Carbs vs EFI on my 2-Stroke Mercury Outboard?
While electronic fuel injection (EFI) systems often provide better performance, there are still several advantages to run WH, WMH, WMV...
860
Mike Hill
- Jul 31
- 2 min
Can two-stroke oil make HP in your outboard?
In Gordon Jennings' 1978 article in Cycle Magazine on two-stroke oil premix, he observed that using a higher ratio of two-stroke oil in...
2270
Mike Hill
- Jul 28
- 3 min
The evolution of the Mercury 2-stroke V6 outboard carburetor
The history of Mercury 2-stroke outboard carburetors, specifically the transition between the WH, WMH, and WMV series, reflects the...
4050
Mike Hill
- Jul 11
- 2 min
Why outboard engine manufacturers use roller bearings vs. friction bearings?
Outboard engine manufacturers often use roller bearings instead of friction bearings (such as plain bearings or bushings) in 2-stroke...
580
Mike Hill
- Jul 8
- 2 min
Effects of Water Ingress on Mercury 2-Stroke Outboard Voltage Regulator, Rectifiers, and Stators
Water ingress into the electrical connections of a Mercury 2-stroke outboard engine can have detrimental effects on the voltage...
440
Mike Hill
- Jul 3
- 1 min
Mercury WH Race Carb Jetting
Here are the standard Factory Carb Jet Sizes for Mercury Racing 2.4 Liter Bridgeport, 2.4 Liter MOD VP, and 2.0 Liter XR2. This Jetting...
1190
Mike Hill
- Jun 26
- 1 min
Will a Big Bore Mercury Piston make more HP?
A big bore kit, also known as a top-end kit, is an upgrade for a 2-stroke outboard high-performance engine that increases the engine's...
1010
Mike Hill
- Jun 25
- 2 min
Rebuilt Powerhead Break-in Procedures
The first 10 hours are the most important hours of your new 2-stroke Mercury, OMC, and Yamaha life. Engine Oil & Fuel Double the oil...
961
Mike Hill
- Jun 16
- 2 min
Propeller pitch, diameter, rake, and cupping!
Propeller pitch, diameter, rake, and cupping are critical factors that directly impact the performance of high-speed boats, especially...
1010
Mike Hill
- Jun 16
- 2 min
Ten Tips for 2-Stroke Outboard Tuners
Tuning a 2-stroke outboard engine for high performance requires expertise and careful adjustments due to its specialized nature. Here...
1870
Mike Hill
- Jun 16
- 1 min
Oil Injection System Removal - Mercury V6
Many people choose to remove the Oil Injection System from their Mercury 2-Stroke V6 Outboard due to its known tendency to fail and its...
680
Mike Hill
- Jun 16
- 1 min
Mercury V6 Outboard Carburetor Identification
HP Model Year Carburetor Identification 150HP 1978-1990 WH-2, 12, 21, 23, 27, 29, 35, 38, 40, 48 150HP 1980-1982 WH-7A 150HP...
1320
Mike Hill
- Jun 13
- 2 min
Can Thinner Head Gaskets Improve Outboard Performance?
Thinner cylinder head gaskets can increase compression in an engine by reducing the volume of the combustion chamber. In a 2-stroke...
1210
Mike Hill
- Jun 11
- 1 min
What is a Nikasil Sleeve in the Mercury Racing Outboard?
Nikasil® is a common term used to describe a cylinder bore that has been plated with nickel silicon carbide, and then finished to a...
910
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