On Overhaulin' (tv), carburetors air filters' casings suck in air from radiators.

This is nonsense!!!

Nonsense yes but not total nonsense. TE is right about warmer air containing less oxygen per unit volume but the cylinder pressure at combustion is mostly due to the CO2 and water vapor produced.Warm incoming air produces somewhat less horsepower and a slight lowering of volumetric efficiency of the engine. .This effect is mitigated in modern engines by computer control, varying the timing and amount of fuel injected. Hotrodders often mix methanol with their fuel because it's rapid evaporation lowers the temperature of the mixture to gain a slight power increase. As far as slow combustion, loud exhaust and very low torque, this is where the nonsense comes in. Engineman

| varying the timing and amount of fuel injected Neither can cool air intake. Carburetor has s ECU ? What injection is near a carburetor ? Mysterios like you all bluff all they want.

of course. anything cheah posts is nonsense.

it always amazes me how these retards bleat about "cold air intakes" while failing to notice their vehicle's carefully designed engine coolant passages that flow through their intake manifold and throttle body to prevent evaporative icing - something especially important in these days of ethanol/gas mixtures and its associated internal moisture content. apparently they fail to appreciate that a vehicle that doesn't run is less efficient than one that does.

The pomposity of his comments rang a bell when he said "none of the 20+ men (esp the engine specialists} on the show know these facts." That's why we use an ECU to control the variables. Your comments are dead on.

"TE Cheah" wrote in news:4ce14b26$1 snipped-for-privacy@news.tm.net.my:

Feedback carbs had computers, and not just in North America.

Honda called theirs "PGM-CARB", to differentiate them from their programmed fuel-injection system, which was called "PGM-FI".