9781903706763

The complete practical guide to successfully modifying cylinder heads for m

Peter Burgess is a self-taught engineer. His background in psychology laid the groundwork for a scientific method approach, and gave him the ability to harness his intuition in making engines work. He works holistically to modify engines, and runs a small, friendly tuning business in Derbyshire, which enjoys worldwide recognition and distribution.

David Gollan is a qualified Mechanical Engineer. He has a comprehensive knowledge of engineering principles which, combined with his natural flair for understanding airflow, results in outstanding product performance. David works as a Hydrometrist for the Environment Agency and acted as a technical consultant for Peter Burgess, author of How to Build, Modify & Power Tune Cylinder Heads.

Introduction, Acknowledgements & about the authors

5

(1)

Using this book & essential information

6

(2)

What is horsepower?

8

(3)

Types of cylinder head

11

(3)

Squish

12

(1)

Swirl (& tumble)

12

(2)

Theory and thoughts

14

(3)

Airflow requirements

14

(1)

Suck it & see

14

(1)

Airflow fundamentals

15

(2)

The flowbench

17

(7)

Air receiver

17

(1)

The orifice plate/orifice drum

17

(1)

Flow bench pressure tappings

18

(1)

Suction pump flow settling drum

18

(1)

Manometers

18

(1)

Manometer pipes and damping

18

(1)

Manometer fluid

18

(1)

Suction pump

18

(1)

Connecting the flowbench

18

(1)

Flow calculation

18

(1)

Simple calculation

19

(1)

More detail

19

(2)

Using the flowbench

21

(1)

Leak free?

21

(1)

Dummy cylinder

21

(1)

Inlet port testing

21

(1)

Exhaust port testing

21

(1)

Valve curtain area

22

(1)

The flowbench experience

22

(1)

The good

22

(1)

The bad

22

(1)

The ugly

23

(1)

Development pointers

24

(4)

Port & valve guide boss

24

(1)

Valve throat & seat

24

(1)

Valve seat width

25

(1)

Valve shapes

25

(1)

Chamber shrouding

25

(1)

Valve flow potential

26

(1)

Port size & flow restriction

26

(2)

Head work

28

(13)

Inspection

28

(1)

Cleaning

29

(1)

Safety first!

30

(1)

Grinding general

30

(1)

Grinders

31

(1)

The wrong way

31

(1)

The right way

31

(2)

Porting accessories

33

(1)

Carbide burrs

33

(1)

Mounted points (stones)

33

(3)

Further accessories

36

(1)

Polishing

36

(1)

Valve, seat & insert machining

36

(1)

Valve seat cutting

36

(2)

Valve refacing

38

(1)

Refacing using cutters

38

(1)

Valve refacing using grinders

38

(1)

Insert counterbore machining

38

(2)

Spring seat machining

40

(1)

Modification work

41

(6)

Porting

41

(1)

Removing the guide boss

42

(1)

Port modification with the carbide

42

(1)

Stoning the port and guide boss area

42

(1)

Fan grinding port and boss area

42

(1)

Flapping the port and boss area

43

(1)

Carbiding the valve throat

43

(1)

Stoning the valve throat

43

(1)

Fan grinding the valve throat

44

(1)

Flapping the valve throat

44

(1)

Hand finishing

44

(1)

Matching ports to manifolds

44

(1)

Combustion chambers - reshaping & finishing

45

(1)

Chamber wall shrouding

45

(1)

Chamber roof roughing

45

(1)

Chamber roof finishing

46

(1)

Chamber wall finishing

46

(1)

Matching manifolds to gaskets/ports

46

(1)

Valves, blueprinting, buretting, CR & `unmodified' class heads

47

(10)

Checking used valves

47

(1)

Choice of valves

47

(1)

Inlet valves

47

(1)

Exhaust valves

48

(2)

Forced induction

50

(1)

Valve guides

50

(2)

Valve seat inserts & conversion to unleaded fuel

52

(1)

Valve seats

52

(1)

Blueprinting & buretting

53

(1)

Blueprinting

53

(1)

Buretting

54

(2)

Compression ratios

56

(1)

Valve train components

57

(7)

Valve springs

57

(1)

Valve float

57

(1)

Valve bounce

58

(1)

Spring surge

58

(1)

Installed height & coil bind

59

(1)

Valve train lightening

60

(1)

Oil seals

60

(1)

Rocker arms & rocker shaft

61

(1)

High ratio rockers

61

(1)

Collets (valve keepers)

62

(2)

Camshafts

64

(4)

Camshaft terminology

65

(2)

Camshaft choice

67

(1)

Bedding the cam

67

(1)

Fuel & fuel supply

68

(8)

Carburation basics

69

(1)

SU, or constant depression type, carburettors

69

(1)

Modifications

70

(2)

Cleaning

72

(1)

Fixed jet type carburettors

72

(1)

Air filters

73

(1)

Fuel supply

74

(1)

Fuel for thought

75

(1)

Exhaust system

76

(4)

Ignition system

80

(3)

Points-type distributors

81

(1)

Mapable electronic ignition systems

81

(1)

Coils

81

(1)

Sparkplugs

81

(1)

Sparkplug (ht) leads (wires)

82

(1)

Pre-ignition & detonation

82

(1)

Head cases

83

(14)

Ford CVH - hemi chamber

83

(1)

Ford V6 3-litre `Essex'

84

(2)

Ford 2-litre SOHC `Pinto'

86

(1)

Ford `Kent' crossflow 1.6

87

(1)

Vauxhall 1.8 8-valve

88

(1)

Fiat twin cam 8-valve

89

(1)

Fiat X1/9 1500

90

(1)

Triumph TR7 & Dolomite 8-valve

91

(1)

Triumph 1500 Spitfire/Midget

91

(1)

1275 BMC/BL/Rover A-series

92

(1)

Ford 351 Cleveland V8 (2V)

93

(1)

Rover V8 3.5 (SD1)

94

(1)

Rover K-series 16-valve 1.8 MGF

95

(1)

General

96

(1)

Appendix

97

(9)

Compression ratio calculations

97

(1)

Head skimming (planing) calculations

98

(1)

Gas speed through inlet valves - effects of engine size & camshaft selection

98

(1)

Torque & horsepower calculations

98

(1)

Torque & acceleration calculations

99

(1)

Fuel supply calculation

99

(1)

Deciphering camshaft specifications

99

(1)

Overlap

99

(1)

Duration

100

(1)

Lobe centre angle

100

(1)

Lobe separation angle

100

(1)

Cam timing

100

(4)

Typical flow bench test programme

104

(2)

Details of other SpeedPro books

106

(6)

Index

112

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How to Build, Modify & Power Tune Cylinder Heads Updated & Revised Edition

How to Build, Modify & Power Tune Cylinder Heads Updated & Revised Edition

1903706769

Summary

Author Biography

Table of Contents

Supplemental Materials