Here is a Pro ET bike I maintain and tune for Dorey Racing . # 2 cylinder was wet fowling the plug and filling the motor with fuel.

I found a hole in the float causing it to sink allowing fuel to flow all the time on the # 2 cylinder.

After carb removal and disassembly you can shake the floats and tell if fuel is in them . Once you find the bad float you must remove all the fuel before re sealing the hole .

Putting the float in the sun for an hour usually takes care of this for you . Next using a bowl of alcohol
submerge the float and watch for air bubbles . Mark the area and clean well after using some sand paper to rough up the area of work .

Using a soldering gun heat the float and apply some solider to seal the hole . Allow to cool a few minutes and check for leaks.

Last cheak your float height and reinstall all parts . Repair is done.


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Here are a few extra pics of the 1977 KZ 1000 Pro ET bike . Mid 9's and after I put the 1078 APE kit with 12 to 1 compresion it will be
in the low 9's high 8's in the 1/4 Mile .

I will post a how to install the 1078 kit in a month or so after I get the cylinder back from the machine shop .

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Another good write up.....

A bike in the high 8's is pretty dam impessive!! I would love to see a vid of that thing in action if you ever get the chance...

 

any specific kind of solder? will silver solder work?

 

here is a link . And yes silver solder .http://www.artmetal.com/enrique/wrou...ng/solder1.htm