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Yamaha XT 600 single carb + KTM shock - How it was made Yamaha XT 600 single carb + KTM shock - How it was made
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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by Andy Miller, UK, Taking a rest, Jokulsarlon, Iceland

I haven't been everywhere...
but it's on my list!


Photo by Andy Miller, UK,
Taking a rest,
Jokulsarlon, Iceland



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  #1  
Old 21 Jul 2014
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Yamaha XT 600 single carb + KTM shock - How it was made
Starting point: A Yamaha XT 600 3UW year 1993.
A picture says more than a 1000 words, so there will be more pictures than words in this thread (I’m terribly sorry about the quality of some of the pics. Apparently I chose to use an extremely crap camera).

Preparation:







Welding of re-enforcement (A good part of the metal that sits between the 2 vertical frametubes where they meet the ”spine” had to be removed to facilitate the carb. Furthermore I had to move the upper shock mount approx. 5 cm back to make room for the air inlet tube):









My homemade manifold. I initially bought a 2-1 manifold from a Grizzly, but it was way too long and the carb would be located too long back. Furthermore the manifold bending made the carb hit the startermotor.







Carb in place:







Mounting of the KTM LC4 rear shock:









I had to fabricate a new inner fender as i’d removed the airfilter/batterybox :






An airfilter is also needed:





A few pics where I show the original shock mount:


Last edited by Svaneberg; 22 Jul 2014 at 09:38.
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Old 21 Jul 2014
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Would luv to see it but we can't see the pics!
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Old 21 Jul 2014
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Crap Will see if I can get them pics posted right tommorow. Too damn tired
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Old 22 Jul 2014
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Yamaha XT 600 single carb + KTM shock - How it was made
Hehe yearh you're right. Although it actually worked on the preview. The pics are uploaded to docs.google.com and retrieving the links was a nightmare. I'll try to upload them somewhere else
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Old 22 Jul 2014
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Now the pics should be showing
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Old 22 Jul 2014
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Quote:
Originally Posted by Svaneberg View Post
Now the pics should be showing
what kinda air filter did u use for the carb dude?
now we are expecting to see a vid or something man :P
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Old 22 Jul 2014
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Just a k&n clone from a car. What I had lying in the workshop
Last edited by Svaneberg; 22 Jul 2014 at 11:24.
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Old 22 Jul 2014
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First start-up with the Carb. Bike has now done 3000km since and has been tuned in:


https://www.youtube.com/watch?v=Q_A7...ature=youtu.be
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Old 22 Jul 2014
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Sounds amazing... can't wait to put mine on!! Your Carb is a mechanical moving Carb right?
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Old 23 Jul 2014
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Yamaha XT 600 single carb + KTM shock - How it was made
Yepp. A Keihin fcr 39 flatslide with accelerator pump (which is not working on the vid. That's why it stalls when I give it fast full throttle. It,s now fixed)
Last edited by Svaneberg; 14 Aug 2014 at 08:42.
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Old 24 Jul 2014
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If mine doesn't work properly u will hook me up with one too?
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Old 24 Jul 2014
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By the way do.u have detailed measurements? Did mine with a ruler so they're not accurate...
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Old 25 Jul 2014
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Actually I also just used a ruler and a Dial caliper. Use a piece of papir and draw up the intake mounts and holes on the paper. Then transfer the Drawing to a piece of metalplate approx. 5mm thick and build it up from there
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Old 16 Aug 2014
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http://youtu.be/3B8oBMBV7LY just converted mine... whole day yesterday I was trying to adjust the carb... I've got some un burnt gas and when I open the throttle really quick sometimes it lags... smaller fuel jet maybe? I've opened up the Carb and put the the omega safety on the top notch on the needle...
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Old 16 Aug 2014
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Yamaha XT 600 single carb + KTM shock - How it was made
Bravo. Good job . I see you Got the manifold mocked together. What carb are you using? Remember to only tune one thing at the time . How much did you have to alter the frame? It sounds on the vid That you have some piston or valve rattle. Jakob
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