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700-14301 Piston Ring 81 mm +.25 mm
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700-14302 Piston Ring 81 mm +.50 mm
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700-14303 Piston Ring 89 mm
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700-14190 Piston Ring- V4 60° Loopcharged
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700-14170 Piston Ring- V4 60° Loopcharged
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700-14180 Piston Ring- V4 60° Loopcharged
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700-14261 Piston Ring (ø 2.565 +.030) All rings come 2 to a set. GLM’S EXCLUSIVE MARINE PISTONS - Fully Machined Hypereutectic Pistons
- Featuring a Hard Anodizing Coating on Top
- Resisting Temperatures up to 1560°F
- Hardness: HV280-400
- Pistons are T-6 Heat Treated
Crossflow: The oldest design, and the one used on Mercury / Mariner /Force 35-150 HP engines from 1970-1990 is the crossflow piston. As the air / fuel mixture travels through the transfer port and into the cylinder, a deflector, cast into the top of the piston, directs the air / fuel mixture towards the combustion chamber and spark plug tip for maximum efficiency. All engines with deflectors on top of the pistons will be crossflow engines. External inspection of a crossflow engine will reveal removeable transfer port covers on the side of the cylinders.
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700-14270 Chrome Piston Ring (ø 3.375) replaces Mercury/Mariner/Force part # 39-18487A12 GLM’S EXCLUSIVE MARINE PISTONS - Fully Machined Hypereutectic Pistons
- Featuring a Hard Anodizing Coating on Top
- Resisting Temperatures up to 1560°F
- Hardness: HV280-400
- Pistons are T-6 Heat Treated
Loopcharged: In 1976 Mercury / Mariner /Force introduced a V6 engine with loopcharged pistons. This engine was the V-175 HP 6-Cylinder. A loopcharged engine has a transfer port cast into the cylinder wall in such a way that it will direct the air / fuel mixture towards the combustion chamber and spark plug tip without the need for a piston deflector. All engines with a flat top or a slight dome on the top of the pistons will be loopcharged. Loopcharged engines will not have removable transfer port covers on the side of the cylinders.
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