Flow Testing and Machining Spec Miata Cylinder Heads
Everyone in Spec Miata knows that the 2015 rule set underwent some changes in the offseason. The rule changes themselves weren’t major, but the...
Connecting Rod Physics
Certainly one of the most critical components inside an engine is one of the most stressed. Connecting rods take the power from the combustion...
Leaning the Mixture – Installing an adjustable fuel pressure regulator and an air-fuel ratio...
Horsepower doesn’t come cheaply or easily in Spec Miata. Sometimes it doesn’t come at all. First, the engines are tiny, measuring either 1.6 or...
Shining A Light on the Black Art of Motor Oil Selection
Motor oil selection, particularly for performance and racing cars, seems to be a “black art.” Most people rely on manufacturer guidelines, recommendations and past...
Cooling System Facts and Upgrades
As the name suggests, an internal combustion engine creates heat. The enormous potential energy from a few droplets of gasoline compressed and mixed with...
Reducing Engine Friction
Here are a couple of statistics that will blow your mind. Up to Eighty percent of the friction in a reciprocating piston engine stems...
Replacing a Miata Fuel Pump Sock
We all have read time and again that oil is the lifeblood of an engine, but without fuel, the engine doesn’t run, and if...
The Science of Spark Plug Wires
Back in the day, when a guy rumbled up to the drive-in and popped his hood for onlookers to gawk at his engine, one...
Extreme Plateau Honing: State-of-the-Art Bore Finishing
Research done by Ford Motor Company and the U.S. Department of Energy showed that roughly 45 percent of engine friction comes from the piston-ring-to-cylinder-wall...
Pulling Less Power – New test equipment uncovers excess horsepower loss in power steering...
We’d all like to enjoy the benefits of power steering, but with none of the weight or horsepower draw, right? Since that’s not possible,...
