How about the accelerator pump, i then have two and no place to fit the hoses? Fuel supply, is it ok to feed from bowl nr1 or do i have to get fuel diretly to both?

Both needs to be fed in the bowl, both needs to have same float height, jetting needs to be the same for both carbs and you won't have the advantage of an acc pump


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What i'm saying is: if you use cv carb you're good, if you use slide carb (mechanical) you need an acc pump :)


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Jakob progressive springs or just plain harder springs? I wanna convert it into supermoto later and I'm between promoto progressive spings or wp harder springs for the fork... whats your opinion?

Depends. Do you want hard damping from fully stretched forklegs or a more soft damping which hardens the more the legs compresses :) I you WP straights in my fork.


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What iam thinking about is the vacuum hose from carb 1 that comes into opening to carb 2. Maybe this is not a acc pump?CV carbs here dont have fuel bowl.


If you look at this its inside part 24, from this the hose is going to carb 2 opening. 1993 Yamaha XT600EE Carburetor | Yamaha Sports Plaza

The oem setup does not have an acc pump. The item 24 you are referring to is a coasting enricher which prevent popping in the exhaust when you close the throttle due to air/fuel mixture being too weak. The cv uses carb 1's float Bowl as it only needs to draw fuel through one jet.


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Ok, but what to do with this hoses if i use only mechanical carbs?

Jakob I want good brakes and when I brake I want not to lose traction due to damping... but our roads here in Crete are full of puddles and very shitty... can I get somehow the best between those two? If u check the link of the wirth springs u can see that the springs are both fatter (hard damping ) and they are progressive too... that's why I'm asking...

If it's not vent hoses, I would just blank them off (Press a small bolt in the end of the hose) as you don't need Any vacuum to the 2nd carb (if you are using only mech carb) :)


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Definately Go with the Wirth :)


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Xtrock: you might want to consider using a carb setup from a kawasaki 250 ninja. Directly bolt on. Only needs to be re-jetted. I Know it's cv but unless you want 2x keihin fcr35 which is VERY expensive, this could be a solution. (Raptor is also cv) :)


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Ok what year is bolt on? I see they have two smililar intake, the cv carb is much bigger so i dont think the airhose will fit bolt on.

Yamaha XT 600 single carb + KTM shock - How it was made
 

Is has to be from the older models as the never has smaller carbs. I Think it is up to year 98 but i'm not sure. Try to do a Google search on the subject or send a PM to Jens Eskildsen on this forum. He did the conversion a while ago. :)


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Also a friend of mine has installed a double Carb out of the rgv.Gama