A-19A & A-19K RACING GASOLINES
Octane (Research Method)
Octane (Motor Method)
Release per unit weight (bomb calorimeter)||20,100
to see A-19K|
A-19A and A-19K
Racing Gasolines are predominantly paraffinic in character, containing a small
highly concentrated high quality aromatic fraction. They are custom blended in
smaller quantities and are intended for normally aspirated engines.
blends produce higher bomb calorimeter readings commensurate with higher heat
values per unit weight. Blending stocks were chosen with high hydrogen/carbon
ratios and elevated resistance to heat and pressure as the main criteria. Fuel
mileage with these blends is poorer than with higher density fuels; and in order
to achieve proper airfuel ratios, additional fuel flow is required.
increases on the order of 1.0-2.0% o/c are typically reported with these blends.
A-19A and A-19K are recommended for normally aspirated engines used in drag
racing, circle track racing and other short duration events in which RPMs are
usually elevated and cooling system capability is more than adequate. ERC A-19A
and A-19K are not recommended for supercharged or turbocharged engines, use
in air-cooled engines (with some exceptions), or any other application where a
gasoline with high convective cooling coefficient is required.