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XT 600e dynojet kit,worth it? XT 600e dynojet kit,worth it?
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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 George Guille, It's going to be a long 300km... Bolivian Amazon

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It's going to be a long 300km...
Bolivian Amazon



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  #1  
Old 13 Sep 2013
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XT 600e dynojet kit,worth it?
I am thinking about fitting a stage 2 dynojet kit to my 2006 4PT with K&N filter and arrow exhaust. Bike runs ok with needle lifted up a notch on standard jets, but is not as fast or smooth as my son's older xt600, which is understandably irritating.
Has anyone got any experience with these kits?

Grateful for any advice
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  #2  
Old 13 Sep 2013
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I got one and works fine for me, dont forget to give more air into the engine. You can try changing the mainjet to 140.
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Old 13 Sep 2013
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Thanks xtrock ,was it the stage 2 kit you used and did you drill extra holes in the airbox, remove snorkel etc?
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Old 13 Sep 2013
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Stage 2 kit 4225, if remember correct i got a new needle, jet, and a drill for drilling up the second jet. I removed the snorkel, bike runs perfect. Mine is a 3TB.. What dynojet is known for is the precision needle. I have Yoshimura exhaust, and the aftermarked exhaust pipe and its bigger inside than stock, KN filter. Its fast 0-100 compared to any bike with only aprrox 50HP.
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Old 15 Sep 2013
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I also have a question. Got the Dynojet kit for my XT600 when I bought the bike. I have K & N filter and Arrow slipon. It feels like the bike wants more fuel at high rpm. So I thought I would install the Dynojet kit.
"Use the slide drill (DD # 40) provided to enlarge the slide lift hole of the CV carb slide."
Which hole is it?
And where is the Fuel mixture screw located?

Regards
Bille
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  #6  
Old 15 Sep 2013
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Its the hole in vacuum slide beside the needle.
Last edited by xtrock; 15 Sep 2013 at 17:49.
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Old 15 Sep 2013
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This drill is 2.5 mm. It sounds to big to be the main jet in the C.V. The second drill is 1.15mm and will be to main jet.

/Bille
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Old 15 Sep 2013
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Long time since i did this, in the CV carb you drill up the hole in the slide(Diaphragm) beside the needle, its the lift hole and use the 40 drill. 115 is for the main jet in the cv carb. And i changed the main jet in the main carb with a new jet 140
Last edited by xtrock; 15 Sep 2013 at 17:49.
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Old 15 Sep 2013
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You mean in diapfragm assy, where the needle will sit?
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Old 15 Sep 2013
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No, beside the needle there is a hole, and remember to put the parts inside back in correct place, the shim holding the needle must have the gap over the hole. Here is pic, the hole to the right side of center.



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Old 15 Sep 2013
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Thank you! It becomes clear enough when I disassemble the carb I hope. It's no good description you get with the Dynojet kit.

/Bille
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Old 16 Sep 2013
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Yes i agree, not the best to explain and why not have pic of what to do.. I bought a new Diaphragm, the old ones have a little hard rubber and more resistance than the new. It runs really good!!
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Old 17 Sep 2013
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What year do you have, xtrock? Mine is a -99 and I have done a lot with my bike and now it's only engine left to mod. I will return with a report when I made the mod with the carb.

/ Bille
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Old 17 Sep 2013
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Quote:
Originally Posted by xtrock View Post
No, beside the needle there is a hole, and remember to put the parts inside back in correct place, the shim holding the needle must have the gap over the hole. Here is pic, the hole to the right side of center.



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What's the point to drill there?

/ Bille
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  #15  
Old 17 Sep 2013
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The point is to get more airflow and change the vacuum.
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