ENGINE
2.4
Bore = 6.5 cm.
Stroke = 6.0 cm.
IHV = 17.1 cc
Displacement =
S
Bore
Stroke
S
Displacement = 199.098 cc
R =
IHV + Displacement
IHV
R = 12.643
Full Stroke Compression Ratio
To calculate the Effective Compression Ratio, substitute the exhaust port height for the stroke in the
formulas above:
Exhaust = 2.95 cm.
Exhaust port height 29.5 mm
Eff Disp =
S
Bore
Stroke
Effective Displacement
Eff Disp = 97.89 cc
Eff Comp =
IHV + Eff Disp
IHV
Effective Compression Ratio
Eff Comp = 6.725
In order to increase the Full Stroke Compression Ratio to 13.6, how much material do you need to
remove from the cylinder head?
R =
IHV + Displacement
IHV
You know that:
, and you want to find out IHV.
Displacement = 199.098 cc, and we want R = 13.6, so then
IHV2 =
Displacement
(R -- 1)
IHV2 = 15.801 cc desired IHV to have 13.6:1 Full Stroke Compression Ratio
IHV =
INSTALLED HEAD VOLUME [CC]
DISP=
CYLINDER DISPLACEMENT [CC]
R
=
COMPRESSION RATIO
S
=
FULL ENGINE STROKE [CM]
I
=
INCHES PER CC OF IHV
B
=
CYLINDER BORE [CM]
PI
=
3.1416
R = (IHV+DISP)
IHV
I =
S
(DISP*25.4)
DISP = (PI*B*B*S)
4
Enfocus Software - Customer Support
Summary of Contents for 2003 Pro X
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Page 190: ...CHASSIS BRAKES FINAL DRIVE 5 6 Pro X Tunnels 2003 440 PRO X 2003 440 Fan 600 700 800 PRO X ...
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Page 267: ...REAR SUSPENSION TRACK TRACTION 7 29 Suspension Lubrication L L L ...
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Page 301: ...ELECTRICAL 8 23 Wiring Diagram 440 Pro X Fan ...
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Page 309: ...PN 9918053 Printed in USA ...