Compression ratio Modification StyleTo increase the power or motor power engine which is called a standard tune up, need to grown the changes on a few things:
1. Improve / increase comparison of compression.
2. Ported to improve the IN and EX importation of fuel to be smoothly and properly.
3. Change the duration, as Noken Lift.
4. Changing the ignition (if allowed in the race).
5. Changing the ratio of the Close Ratio.
6. Carburetor settings.
Compression
Improving the comparative compression (CR = Compretion Ratio) is the way that early adopted by the mechanics to increase engine power. However, to enhance comparison of compression needs to several factors, among others:
1. Fuel used.
2. Quality piston is used.
HOW raise Compression:
1. Changing the piston with a model racing.
2. Juxtapose deck clearance.
3. Head lathe.
4. Teralis Head.
5. Piston block and a lathe.
HOW reduce Compression:
1. Merimer dome at the head.
2. Deepen HOLES the valve on the piston.
3. Piston lathe.
BENEFITS USING HIGH Compression:
1. Increased engine power.
2. Final gear to be heavy.
3. Power from the engine feels lap top to bottom.
LOSS USING HIGH Compression:
1. Machine becomes hot quickly.
2. Engine break into large and coarse.
3. When the calculation of compression is not appropriate, often detonation.
To find out / calculate comparison compression (CR) of one engine, we need to know the first volume of the cylinder will be done.
EXEMPLARY MACHINE ON JUPITER Z O / S 100
Or D Bore: 52 mm = 5.2 Cm
Stroke 54 mm = 5.4 Cm
= 0.785 x 5.22 X 5.42
= 114.62 cc
≈ 115 cc
EXEMPLARY ON JUPITER Z O / S 100
Volume of space with measured fuel buret through plug is 14.55 c
Volume room so toasty 14.55 cc - 0.7 cc = 13.85
(0.7 cc volume space is plug)
How to determine how many cc fuel fill space that we must use the comparison of compression that is we want our to course.example comparison compression 1: 14 is the volume of space fuel?
That means that if we want the comparison of compression 1: 14, the contents space must be roasted 8.84 cc.