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2. Stroke ratio - Wikipedia

   en.wikipedia.org/wiki/Stroke_ratio

   An engine is described as oversquare or short-stroke if its cylinders have a greater bore diameter than its stroke length, giving a bore/stroke ratio greater than 1:1. An oversquare engine allows for more and larger valves in the head of the cylinder, higher possible rpm by lowering maximum piston speed, and lower crank stress due to the lower ...

3. Leak-down tester - Wikipedia

   en.wikipedia.org/wiki/Leak-down_tester

   Testing is done on an engine which is not running, and normally with the tested cylinder at top dead center on compression, although testing can be done at other points in the compression and power stroke. Pressure is fed into a cylinder via the spark plug hole and the flow, which represents any leakage from the cylinder, is measured. Leak-down ...

4. Head gasket - Wikipedia

   en.wikipedia.org/wiki/Head_gasket

   If the detonation is severe, the cylinder pressure can increase to eight times above normal pressures, [citation needed] which can cause the cylinder head to lift away from the engine block, disrupting the seal between the two. Most gaskets used in standard production engines can be critically damaged by severe detonation.

5. The Best Rust Removers Keep Tools and Gear Shining

   www.aol.com/lifestyle/best-rust-removers...

   Unlike most acid-based rust removers, POR-15–short for Paint Over Rust–not only melts away rust, but preps the metal underneath for paint by lightly etching the metal and leaving behind a zinc ...

6. Muscle cramps are a pain. These expert-approved tips can help ...

   www.aol.com/muscle-cramps-pain-expert-approved...

   At one point or another, we’ve all experienced the unexpected, intense pain of a muscle cramp. Muscle cramps, also known as muscle spasms or charley horses, are the involuntary contraction of ...

7. Nikasil - Wikipedia

   en.wikipedia.org/wiki/Nikasil

   The nickel silicon carbide solution can then be electroplated onto the aluminium cylinder bore. After the cylinders are plated, the Nikasil bores are diamond-honed to a plateau finish. Pistons will need to be fitted with Nikasil compatible piston rings as chrome rings commonly used with cast iron bores are not compatible. Due to Nikasil's ...

8. 5 symptoms men over 40 should never ignore - AOL

   www.aol.com/finance/5-symptoms-men-over-40...

   A feeling of pressure and squeezing in the chest is a serious indication that medical care is essential because chest pain and discomfort is one of the most common symptoms of heart attack in men.

9. Desaxe - Wikipedia

   en.wikipedia.org/wiki/Desaxe

   A desaxe engine, is one in which each cylinder is positioned with its exact center (the bore axis) slightly offset from the center line of the crankshaft. "Désaxé", in French, means "unbalanced". Desaxe engines are usually automotive, but the term can also apply to steam engines. An animation of a Scuderi Split Cycle Engine.