CP Pistons
CP VISION AND MISSION STATEMENT
We design and manufacture pistons for the motor sport racing industry
and high performance vehicles. We are committed to growth through
quality, value, customer satisfaction and continuous improvement.
100 Years of Experience
Combining over 90 years of experience in designing and
manufacturing racing pistons, the Calvert brothers focused
their expertise on the high-end racing market.
32,000 Square Feet of Service
Our Southern California facility maintains large
stocking inventory to provide you with the
best delivery in the industry.
Meeting Your Expectations
Consistent quality remains our number one goal and we
pride ourselves on our extensive multi-level inspection
process and quality control program.
Winning Philosophy
From the very beginning, the goal was to create the
perfect 21st century technology environment to
build high-performance pistons.
Setting Us Apart from the Competition
• Unique proprietary forging design
• State-of-the-art CNC machinery
• Highest quality control standards
• Continuous research and development
• Most sophisticated computer design
• Focus on individual service
500 and Growing
We currently inventory over 500 off-the-shelf
piston designs to accommodate the widest
variety of applications.
Leader of the Pack
Being in front is what racing is all about. CP Pistons can get
you there by producing a set of high-performance pistons
specifically designed for your racing application.
STANDARD PISTON FEATURES
Anti Detonation Grooves (Contact Reduction Grooves)
are grooves that protect the top ring by disrupting detonation waves. Also known as
contact reduction grooves, these grooves limit the piston/cylinder contact during high
temperature and RPM.
Accumulator Groove is a V-shaped groove machined in the 2nd ring land
to collect excess blow-by between the top and second ring. CP Groove collects residual
gasses during combustion and alleviates top ring flutter while increasing ring seal.
CP Groove CP groove stands for Constant Pressure Groove. This groove works
as a channel on the lower part of the top land that equalizes pressure to the back of
the top ring groove. When used in combination with lateral gas ports, the CP groove
helps keep gas ports clear of carbon build up. In addition, the CP groove prevents the
top land from smudging into the top ring if the land rubs the cylinder bore.
Double Pin Oilers, in conjunction with our dual fed reservoir, add twice the
amount of oil from the cylinder wall to the wrist pin.
Forgings are computer designed for strength and minimum weight. Each piston
die is CNC machined to assure optimal accuracy and superior grain flow in the
forging process.
Radiused Domes are used to maximize quench while eliminating possible
hot spots that promote detonation.
Cam and Barrel: Extensive research and development has been done to
find the optimum skirt shape for each piston. Having the correct cam and barrel on a
part promotes the following:
1. Tighter clearances
2. Less noise
3. Better ring seal
4. More power
5. Durability
Depending on the forging and application, different cam and barrel profiles are utilized
for maximum performance.
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