|
- spis treści:
Introduction 5
Using this book & essential information 6
Chapter 1: Terminology 8
'Duration' 8
'Phasing' 10
'Duration' and 'Phasing' 10
'Valve lift' 11
'Camshaft lobe lift' 11
'Overlap' 12
'Lift rate' 12
'Valve clearance' 12
Mechanical versus hydraulic camshaft profiles 13
'Full lift' 13
'Full lift timing' 14
'Piston to valve clearance' 14
Chapter 2: Choosing the right amount of duration 16
270 Degrees of duration 17
280 Degrees of duration 17
290 Degrees of duration 17
300 Degrees of duration 18
310 Degrees, or more, of duration 18
Camshaft duration and rpm ranges 19
Pushrod overhead valve engines 19
Single overhead camshaft engines 21
Two valve twin overhead camshaft engines 21
Four valve twin overhead camshaft engines 21
Chapter 3: Checking camshafts 22
Camshaft straightness 24
Camshaft journal condition 25
Lobe accuracy 25
Chapter 4: Camshaft timing principles 27
Checking TDC 28
Marking the crankshaft damper/ pulley 29
Camshaft timing check using the full lift position 31
Chapter 5: Camshaft problems 34
Engineering tolerances. 34
Camshaft specifications 34
Lobe Phasing 35
Re-ground camshafts 35
Lack of power (camshaft at fault?) 37
Chapter 6: Timing procedure - cam-in-block engines 38
Checking for full lift using the lifter 39
Finding 'true' top dead centre 39
Checking full lift via lifter movement 40
Checking full lift via rocker arm/valve retainer movement 43
Chapter 7: Camshaft timing procedure - S.O.H.C. engines 45
Chapter 8: Camshaft timing procedure - T.O.H.C. engines 48
Two valve per cylinder engines 48
Four valve per cylinder engines 48
Chapter 9: Engine testing 56
Rolling road 56
Track/road testing 57
Drag strip 58
Engine dyno 58
Complementary SpeedPro books 59
Index 64
|
