2886878-Building-High-Performance-Engines-2.pdf

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Slide 1

Building Engines for

High Performance Applications

Part 2

High Performance Applications

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Cylinder Head Designs

• Key component in building HP

• Must match bore size & piston head

design, intake & exhaust manifolds, and

camshaft

• Maximum airflow = Maximum HP

• Air speed = RPM range

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Combustion Chamber Design

 Hemispherical

 Breathes well

 Allows for large

valves

 Good spark plug

location

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Combustion Chamber Design

 Hemispherical

 Low turbulence

 Requires a large

dome for higher

compression ratios

 Susceptible to

detonation

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Combustion Chamber Design

 Wedge

 Has a quench area to

promote good

turbulence

 Smaller combustion

chamber reduces the

chance of detonation

 Limiting valve size

 Restrictive port

design

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