4 NO MOTOR SETTING

To increase the power or engine power standard commonly referred to tune up, needs to be put the changes on several things:

   1. Increase / raise the compression ratio.
   2. IN or EX ported fix to fuel revenue to be smooth and good.
   3. Changing the duration, Elevator Noken as.
   4. Changing the ignition (if the race is allowed).
   5. Change the ratio with Close Ratio.
   6. Setting the carburetor.
COMPRESSION
Increasing the compression ratio (Compretion Ratio = CR) is a way of beginning to be taken by the mechanics to increase engine power. However, to increase the compression ratio to consider several factors, among others:

   1. Fuel used.
   2. Quality piston used.
Through increased COMPRESSION:

   1. Replacing the piston with model racing.
   2. Closer deck clearance.
   3. Head lathe.
   4. Weld Head.
   5. Lathe Block and Piston.
HOW TO REDUCE COMPRESSION:

   1. Merimer dome on the head.
   2. Deepening coakan valve on the piston.
   3. Piston lathe.
ADVANTAGES OF USING HIGH COMPRESSION:

   1. Increased engine power.
   2. Final gear becomes heavy.
   3. Power engine feels from the round bottom to top.
LOSSES USING HIGH COMPRESSION:

   1. Machine becomes hot quickly.
   2. Engine break into a big and rough.
   3. If the compression is not precise calculations, frequent detonation.
To calculate the compression ratio (CR) from one machine, we need to know the cylinder volume will be done.
EXAMPLES OF MACHINE JUPITER Z O / S 100
Bore or D: 52 mm = 5.2 cm
Stroke 54 mm = 5.4 cm
= 0.785 x 5.22 x 5.42
= 114.62 cc
≈ 115 cc
EXAMPLES OF JUPITER Z O / S 100
The volume of the combustion chamber through the spark plug was measured with a burette is 14.55 c
So the combustion chamber volume 14.55 cc - 0.7 cc = 13.85
(0.7 cc is Volume Space Busi)
How to determine how many cc of the contents of the combustion chamber that we must use the compression ratio we have set.
Suppose we want a compression ratio of 1: 14 what is the volume of space fuel?
That means if we want a compression ratio of 1: 14, the content must be 8.84 cc combustion chamber.
Ported
The purpose of changing the port is an attempt to enhance or improve volumetric efficiency by optimizing the flow of gas into the combustion chamber.
There are 3 factors that determine the amount of power on a machine:
1. Engine efficiency
namely how a boost in the piston torque generated by the fly wheel.
2. Thermal efficiency (heat)
ie how much fuel to be burned / heated in the cylinder to push the piston down to the TMB efficiently.
3. Volumetric Efficiency
which makes the channel / the right size for optimal gas pump.