New 20° BBC Pistons from JE Pistons
JE PISTONS RELEASES NEW RACE PISTONS FOR 20 DEGREE DART AND BRODIX CYLINDER HEADS
After developing a large variety of custom pistons for Big Block Chevy engines equipped with 20° cylinder heads like the Dart Pro1 20° and Brodix SR20, the engineering team at JE Pistons has merged all of the most desirable qualities and created the 20° BBC Series that combines high quality custom piston features with off-the-shelf convenience. The pistons are available with 23cc and 18cc domes, designed for high horsepower naturally aspirated and nitrous engines with bore sizes from 4.600″ to 4.625″. These shelf stocking pistons offer engine builders the convenience of quick service and short wait times to get the parts they need on time.
Forged in-house from 2618-T6 aluminum, they incorporate many special features that elevate these new 20° pistons above the norm. They include JE’s Ultra-Groove process that creates the industry’s flattest and smoothest ring grooves with tolerances held to a millionth of an inch, vertical gas ports providing a consistent ring seal. Special contact-reduction grooves to reduce friction and minimize detonation, while the power adder accumulator groove provides increased accumulator area without weakening the ring land.
The dome incorporates a fire slot for improved flame travel and combustion efficiency and is designed to accommodate up to 2.450″ diameter intake valves, while the underside is 3D crown-milled to remove all unnecessary weight and reduce the reciprocating mass. Optimum wrist pin lubrication is assured through employing a broach pin oiler with an accumulator groove.
