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Author Topic: KZ550 bob/Cafe almost there!!!  (Read 38430 times)

Offline MotorbikeBruno

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Re: KZ550 bob/Cafe almost there!!!
« Reply #165 on: Apr 08, 2013, 11:10:13 »
Some updates, just so other people with KZ550's and TK carbs can get as much as possible

I recently got my hands on an O2 wideband tuning kit (spendy, but awesome)  and another carb tuning tool that lets you see into the combustion chamber and tell what's going on (lean or rich) called a Colortune by Gunson. 

I had drilled out the pilots to #78 which ends up being .39mm the mixture screws were all almost bottomed out attempting to richen the circuit as much as I could.  I was able to get cyl 2/3 to do "OK" and not run lean, but they are 1/4 turn or less from bottom.  So I'll be drilling the pilots out ONE more size to the # 77 drill bit, giving me a Pilot size of .44mm  I would hope to have some adjust-ability using the mixture screws as now I should be TOO rich with the screws all the way in.  This should put me to the almost factory specs of 1 1/4 turn I would hope (crossing fingers)

After the pilot circuit is "fixed" I'll move forward with the O2 sensor and see what's going on with the rest of the rev range.  Just thought I would get as much information out there as possible.
« Last Edit: Apr 20, 2013, 16:48:57 by MotorbikeBruno »

Offline MotorbikeBruno

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Re: KZ550 bob/Cafe almost there!!!
« Reply #166 on: Apr 20, 2013, 17:21:14 »
Video of the #44 pilot test.  I think overall it went well.  You can hear the bike wake up a little after I adjust the mixture screws in a little bit more.  All 4 cylinders are at 1/4 -  1/2 turns out.


    Will be available in about 40 min from the time I post this.

Offline County Fair

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Re: KZ550 bob/Cafe almost there!!!
« Reply #167 on: May 02, 2013, 19:39:46 »
Great clip. The bike sounds and looks great.



   Tim
"With a melody of see ya laters an' screwdrivers on carburetors"
T.W.
http://www.dotheton.com/forum/index.php?topic=48777.0

Offline goochwarmer

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Re: KZ550 bob/Cafe almost there!!!
« Reply #168 on: May 08, 2013, 14:31:03 »
So as of now what is your set up? 4-1 with pods, #44 pilot and 117 Main? Oh and where is your needle? Up two from stock? Just wanting a referance point. Love the way the bike sounds!!!
Yesterday I ran into an old girlfriend and I thought I missed her.....................so I backed up and hit her again. Ya know, sometimes I really do miss her.

Offline MotorbikeBruno

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Re: KZ550 bob/Cafe almost there!!!
« Reply #169 on: May 08, 2013, 16:50:22 »
So as of now what is your set up? 4-1 with pods, #44 pilot and 117 Main? Oh and where is your needle? Up two from stock? Just wanting a referance point. Love the way the bike sounds!!!

4-4 (each port has its own pipe with baffle) with pods (UNI foam filters)  and Yes #44 pilot, 1/4-1/2 turn out on the mixture screws, and 2 washers under each needle.