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Timing Advance Mod |
Cost: $0
Difficulty: 3 of 5
Tools Required: 8mm socket, Dremmel with (see picture of cutting
bit), safety glasses
Is Mod reversible?: Yes (if you follow directions closely) |
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What does it do? This mod will give
you a noticeable boost in the entire powerband. |
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How does it work? When the fuel
mixture is ignited in the cylinder; it takes time for the expanding
gases to reach and push down on the piston. For the purpose of
this explanation, let's say the time it takes for the fuel mixture
to enter the cylinder, compress, and ignite remain constant regardless
of engine speed. However, as the RPM's increase, the amount of
time for this process to take place becomes correspondingly less
~ so it makes sense that in order to achieve optimum power, you
need to ignite the mixture earlier so that the burning gases push
down on the piston at just the right time. |
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Since your 50's stock timing is more on the sluggish side; what
we're trying to accomplish with this mod is to advance the timing
(ignite the mixture earlier) and try to catch the piston most
near the top of it's cycle's downswing. Too much advance and
we'll catch the piston while it's rising, causing detonation
(which is not good). Too little advance and we'll push the piston
too late on it's way down, causing your bike to act sluggish. As with any performance mod, please read the directions carefully,
follow them exactly, and always exercise caution. Perform this
mod at your own risk. |
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Step 1:
Remove the flywheel cover |
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Step 2:
Locate the pickup sensor. Remove the two 8mm bolts holding it in
place.
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Step 3:
Pull off the sensor, being careful not to pull out or strip the attached
wires. Underneath the sensor is a brass mounting bracket; this
is no longer needed and can be set aside. |
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